U.S. patent number 3,638,723 [Application Number 05/048,264] was granted by the patent office on 1972-02-01 for locator devices.
This patent grant is currently assigned to Otis Engineering Corporation. Invention is credited to Albert W. Carroll.
United States Patent |
3,638,723 |
Carroll |
February 1, 1972 |
LOCATOR DEVICES
Abstract
A locating tool for use in a well flow conductor for locating
each or any one of a plurality of oppositely facing shoulders in
said conductor and usable with well tools for locating said tools
at predetermined positions with respect to selected ones of said
shoulders, and more particularly usable in connection with a
running tool and a well locking and sealing mandrel device for
locating said locking and sealing mandrel device in registry with
any one of a plurality of receptacles in said conductor for
supporting a well tool therein. The running tool is operable to set
the locking and sealing mandrel device in the selected receptacle
only after the locator device has located the receptacle and is
releasable from the mandrel device only after the same has been
locked in place in the receptacle. The locking device is also
operable to engage and shift any one of a plurality of sliding
sleeve side opening valves in a flow conductor. The locator device
is adapted to be operated by either flexible line mechanism or by
through flow line pumpdown operating mechanisms.
Inventors: |
Carroll; Albert W. (Dallas,
TX) |
Assignee: |
Otis Engineering Corporation
(Dallas, TX)
|
Family
ID: |
21953595 |
Appl.
No.: |
05/048,264 |
Filed: |
June 22, 1970 |
Current U.S.
Class: |
166/215 |
Current CPC
Class: |
E21B
23/02 (20130101); E21B 23/10 (20130101) |
Current International
Class: |
E21B
23/02 (20060101); E21B 23/10 (20060101); E21B
23/00 (20060101); E21b 023/00 () |
Field of
Search: |
;166/214,215,216,217,206 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Leppink; James A.
Claims
What is claimed and desired to be secured by Letters Patent is:
1. A locator device including: an elongate mandrel; a control
sleeve slidable on said mandrel; expansible and retractable locator
and stop dogs carried by said control sleeve; an expander surface
on said mandrel engageable with said dogs for moving said dogs to
expanded locating and stopping positions; coengageable means on
said mandrel and said control sleeve for restraining movement of
said control sleeve in one direction longitudinally of said mandrel
to position said dogs in expanded engagement with said expander
surface and yieldable to permit movement of said control sleeve
further in such direction on said mandrel to disengage said dogs
from said expander surface; and means on said mandrel and said
control sleeve coengageable to prevent movement of said control
sleeve in the opposite direction on said mandrel to hold said
locator and stop dogs in engagement with the expander surface on
the mandrel in expanded position to provide a positive stop.
2. A locator device including: an elongate mandrel; a control
sleeve slidable on said mandrel; expansible and retractable locator
and stop dogs carried by said control sleeve; an expander surface
on said mandrel engageable with said dogs for moving said dogs to
expanded locating and stopping positions; coengageable restraining
means on said mandrel and control sleeve for restraining movement
of said control sleeve on said mandrel in one direction
longitudinally thereof at a point at which the locator and stop
dogs are in engagement with said expander surface, said control
sleeve being yieldably movable in the direction opposite said one
direction from said first position to disengage said dogs from said
expander surface and biased to return to said first position; said
restraining means being yieldable to permit movement of said
control sleeve and dogs in such one direction on the mandrel past
said first position to a second position in which said locator and
stop dogs engage said expander surface; and stop means on said
mandrel and said control sleeve coengageable to prevent movement of
said control sleeve in said opposite direction on said mandrel past
said second position to hold said locator and stop dogs in
engagement with the expander surface on the mandrel in expanded
position to provide a positive stop by means of said dogs; said
control sleeve being yieldably movable in said one direction on
said mandrel from said second position after having been moved to
said second position.
3. A locator device including: an elongate mandrel; a control
sleeve slidable on said mandrel; expansible and retractable locator
and stop dogs carried by said control sleeve; expander means on
said mandrel engageable by said dogs for moving said dogs to
expanded locating and stopping positions; coengageable restraining
means on said mandrel and said control sleeve for restraining
movement of said control sleeve in one direction longitudinally of
said mandrel past a first position in which said dogs are in
engagement with said expander surface; biasing means on said
mandrel engaging said control sleeve resiliently biasing said
control sleeve to said first position and yieldable to permit said
control sleeve to move away from said first position to move the
dogs in the opposite direction out of engagement with the expander
surface; said restraining means being yieldable to permit movement
of said control sleeve further in said one direction past said
first position to a second position wherein the said dogs engage
said expander surface and are held in expanded position thereby;
second biasing means on the mandrel engaging the control means
resiliently biasing said control means in said opposite direction
on said mandrel toward such second position and yieldable to permit
said control sleeve to move the dogs in said one direction out of
engagement with the expander surface; and stop means on said
control sleeve and on said mandrel coengageable to prevent movement
of said control sleeve in said opposite direction on said mandrel
past said second position to hold said locator and stop dogs in
engagement with the expander surface on the mandrel.
4. A locator device of the character set forth in claim 2 wherein
said restraining means comprises: an external annular flange on the
mandrel intermediate the ends thereof; and elongate spring fingers
on said control sleeve having inwardly extending hook members on
their ends having cam surfaces on one side engageable with the
flange on the mandrel for restraining movement of said control
sleeve in said one direction on the mandrel, said hook members
having abrupt shoulders on their other sides engageable with an
abrupt shoulder on the external annular flange to prevent movement
of said control sleeve in said opposite direction on said
mandrel.
5. A device of the character set forth in claim 2 wherein said
biasing means comprises: springs confined on the mandrel between a
shoulder thereon at one end and the control sleeve at the other
end; said springs engaging opposite ends of said control means and
each biasing the control means toward the other spring.
6. A locator device of the character set forth in claim 2 wherein
said control sleeve is provided with a plurality of
circumferentially spaced radially extending apertures; said locator
and stop dogs have retainer flanges on their inner ends engageable
with the inner ends of the apertures in the sleeve, and have
converging beveled surfaces on their upper and lower outer ends;
and said mandrel is provided with retracting recesses on opposite
longitudinal sides of the expander surface.
7. A locator device including: an elongate mandrel; an annular
expander surface intermediate the ends of said mandrel; annular
recess means at each end of said locking surface having a diameter
smaller than that of the locking surface; a control sleeve slidable
on said mandrel; a plurality of locator and stop dogs carried by
said sleeve and engageable with said expander surface to be held in
projected locating position by said expander surface; said control
sleeve being movable longitudinally on said mandrel to dispose said
dogs in registry with a first one of said recesses to permit said
dogs to be moved to retracted position; resilient means biasing
said sleeve in one direction on said mandrel toward a first
position on said mandrel in which said dogs are disposed in
engagement with said expander surface; yieldable retaining means on
said sleeve and on said mandrel coengageable to yieldably prevent
further movement of said sleeve in said one direction from said
first position with said dogs in engagement with said expander
surface; said resilient means permitting movement of said sleeve
and dogs longitudinally in said opposite direction on said mandrel
to align said dogs with said first recess; said restraining means
being yieldable upon application of a predetermined longitudinal
force to said dogs and said sleeve to move said sleeve further
longitudinally in said one direction on said mandrel to disengage
said restraining means and to dispose said dogs in alignment with
said second recess for movement to retracted position; and stop
means on said sleeve and said mandrel coengageable upon subsequent
movement of said sleeve and dogs in said opposite direction on said
mandrel to stop said sleeve and dogs in a second position thereon
in which the dogs are in engagement with said expander surface and
held in expanded locating position and second resilient means
biasing said sleeve and said dogs in said opposite direction toward
said second position on said mandrel, said resilient means being
yieldable to permit said sleeve and said dogs to move
longitudinally in said one direction on said mandrel to align said
dogs with said second recess, whereby said dogs are retractable
from said expanded location position; said sleeve and said dogs
when in said second position provide a positive stop means against
movement of said mandrel with said sleeve and said dogs in said
expanded position in said one direction axially of said
mandrel.
8. For use in combination with a tubular landing nipple adapted to
form part of a well flow conductor and having a stop shoulder
thereon and an annular locking groove in the bore wall thereof
intermediate its ends, and a well tool anchoring device insertable
through the well flow conductor into said landing nipple and having
a mandrel, radially expansible and contractable locking members,
and means for expanding said locking members into expanded position
into the locking groove in the landing nipple, a locator and
setting tool device for inserting said anchoring device into the
well flow conductor, locating the same at the landing nipple and
anchoring the same in place in the landing nipple and comprising:
setting tool and locator means having support means for attachment
to the mandrel of the anchoring device; expansible and retractable
locator means adapted to engage said stop shoulder on the landing
nipple to position the locking members of the anchoring device in
registry with the landing nipple locking recess; means on the
setting tool movable with respect to the mandrel of the anchoring
device to move the expander means on said mandrel into expanding
engagement with the locking members to move the same into expanded
position engaged in the locking recess of the landing nipple while
said support means is connected to said locking device and said
locator means is engaged with said stop shoulder to positively lock
the mandrel of the locking device against movement in either
longitudinal direction in the nipple; and means for releasing the
connection of the support means with the mandrel of the locking
device only after said locking device has been locked in said
nipple to permit the setting tool and locator device to be moved
from the flow conductor after the anchoring device has been
anchored in the landing nipple.
9. For use in combination with a tubular landing nipple adapted to
form part of a well flow conductor and having a stop shoulder
thereon and an annular locking groove in the bore wall thereof
intermediate its ends, and a well tool anchoring device insertable
through the well flow conductor into said landing nipple and having
a mandrel, radially expansible and contractable locking members,
and means for expanding said locking members into expanded position
into the locking groove in the landing nipple, a locator and
setting tool device for inserting said anchoring device into the
well flow conductor, locating the same at the landing nipple and
anchoring the same in place in the landing nipple and comprising:
an elongate mandrel; a control sleeve slidable on said mandrel;
expansible and retractable locator and stop dogs carried by said
control sleeve; an expander surface on said mandrel engageable with
said dogs for moving said dogs to expanded locating and stopping
positions; coengageable restraining means on said mandrel and
control sleeve for restraining movement of said control sleeve on
said mandrel in one direction longitudinally thereof at a point at
which the locator and stop dogs are in engagement with said
expander surface, said control sleeve being yieldably movable in
the direction opposite said one direction from said first position
and biased to return to said first position; said restraining means
being yieldable to permit movement of said control sleeve and dogs
in such one direction on the mandrel past said first position to a
second position in which said locator and stop dogs engage said
expander surface; and stop means on said mandrel and said control
sleeve coengageable to prevent movement of said control sleeve in
said opposite direction on said mandrel past said second position
to hold said locator and stop dogs in engagement with the expander
surface on the mandrel to provide a positive stop by means of said
dogs; said control sleeve being yieldably movable in said one
direction on said mandrel from said second position after having
been moved to said second position, said locator and stop dogs when
in said second position being engageable with a stop shoulder of
said landing nipple to position the locking members of the
anchoring device in registry with the landing nipple locking
recess; support means on said locator and setting tool device for
attachment thereof to the mandrel of the anchoring device for
supporting the same in position for the locking members to be moved
into the locking recess of the landing nipple when said locator and
stop dogs are engaged with the stop shoulder of the landing nipple;
means on said locator and setting tool device movable with respect
to the mandrel of the anchoring device while the locator and stop
dogs are in engagement with the stop shoulder of the landing nipple
to move the expander means on said mandrel into expanding
engagement with the locking members to move the same into expanded
position engaged in the locking recess of the landing nipple to
positively lock the mandrel of the locking device against movement
in either longitudinal direction in the nipple, and means for
releasing the connection of the support means with the mandrel of
the locking device to permit the setting tool and locator device to
be moved from the flow conductor after the anchoring device has
been anchored in the landing nipple.
10. In combination: a tubular landing nipple having an annular
internal locking recess in its bore wall and having an upwardly
facing locator shoulder spaced from the locking recess; a locking
device for supporting well tools in place in said landing nipple
and including a mandrel, locking members expansible and retractable
on the mandrel, an expander sleeve movable on the mandrel into
engagement with the locking members to move said locking members
into expanded locking position and positively hold them in such
expanded position, and means for connecting a seal member to said
mandrel; and a locking and setting tool device for positioning the
locking device in the nipple for anchoring therein and including:
an elongate mandrel; means for detachably connecting said locator
and setting tool mandrel to the mandrel of the locking device;
expansible and retractable locator and stop means on said locator
and setting tool mandrel engageable with the upwardly facing
locator shoulder of the landing nipple to position the locking
device in the nipple with the locking members thereof in registry
with the locking recess for expansion into locking engagement in
such recess; means on said locator and setting tool device for
moving the expander means on the mandrel of the locking device into
engagement with the locking members to expand the locking members
into the locking recess of the landing nipple and positively hold
the locking members in said expanded position in engagement in the
locking recess, while said locator and stop means is engaged with
said locator shoulder of said nipple and said detachable connecting
means is connected to said mandrel, to prevent longitudinal
movement of the locking device in either direction out of the
landing nipple; said detachable means connecting said locator and
setting tool device with the mandrel of the locking device being
releasable only by the application of an upward longitudinal force
to the locator and setting tool device after the locking members of
the locking device have been expanded to locking engagement in the
locking recess of the landing nipple to free the locator and
setting tool device from the mandrel of the locking device for
removal of the locator and setting tool device from the flow
conductor.
11. In combination: a subsurface well locking device having a
mandrel, expansible and retractable locking members thereon and
means for moving the locking members from retracted to expanded
position and positively holding said locking members in such
expanded position; a landing nipple having means for connecting it
in a well flow conductor and having an internal annular recess in
its bore wall intermediate its ends for receiving the locking
members of the locking device and an annular upwardly facing
locator shoulder spaced above said locking recess a predetermined
distance; and a locator and setting tool device comprising: means
releasably connecting the setting tool means with the mandrel of
the locking device; expansible and retractable locator and stop
members carried by the locator and setting tool device and movable
to a position to engage the upwardly facing shoulder of the landing
nipple and spaced from the means for connecting the setting tool to
the mandrel of the locking device a distance such that when the
locator and stop members of the locator and setting tool device are
in engagement with the upwardly facing locator shoulder of the
landing nipple the locking dogs are in registry with the locking
recess in the nipple and are in position to be expanded into said
recess to lock the locking device in place in the nipple; and means
on the setting tool engageable with the expanding means on the
mandrel for moving said expanding means into engagement with the
locking members of the locking device to expand the same into
locking engagement in the locking recess in the nipple and to
positively hold the same in such position; said means releasably
connecting the setting tool and the mandrel of the locking device
being releasable only after the locking members of the locking
device have been expanded to locking engagement in the locking
recess of the landing nipple; said locator and setting tool device
being removable from the well flow conductor after said releasable
connection between the setting tool means and the mandrel of the
locking device has been released after the device has been locked
in place in the nipple.
12. A device for releasably anchoring a well tool at a selected
level in a well pipe comprising: a setting tool subassembly having
means for connecting the same to said well tool; a locator
subassembly connected with the setting tool subassembly engageable
with a stop shoulder in said well pipe for positioning the setting
tool subassembly at a selected level in the well pipe; and
connector means on the setting tool subassembly having means for
connecting the same to a well tool to support the same in position
to be anchored at said selected level while said locator
subassembly is engaged with said stop shoulder, releasable from
such connection with the well tool by upward movement only after
the well tool has been anchored at said selected level in the well
pipe.
13. A device of the character set forth in claim 12 wherein the
means for connecting the setting tool subassembly to the well tool
comprises: resiliently expansible and contractable detent means;
expander means for holding said detent means in expanded position;
and releasable means holding said detent means in engagement with
said expander means and releasable to permit movement of said
detent means from expanded position for releasing the setting tool
subassembly from the well tool.
14. A device of the character set forth in claim 12 wherein said
setting tool subassembly includes operator means for actuating said
well tool for anchoring said well tool in said flow conductor while
said well tool is held at said selected level in said well pipe by
the engagement of said locator subassembly with said stop shoulder
and before said setting tool subassembly is released from
connection with said well tool after the same has been anchored in
said well pipe.
15. A locating device including: an elongate mandrel; a plurality
of expansible and retractable locator and stop members mounted on
the mandrel for movement laterally between expanded and retracted
positions on the mandrel; means for supporting said locator and
stop members on the mandrel and movable longitudinally of the
mandrel; expander means on the mandrel engageable by the locator
and stop members to move the locator and stop means to expanded
position; means resiliently holding said carrier means in position
longitudinally of the mandrel to dispose the locator and stop
members in engagement with the expander surface thereon, said
resilient means permitting movement of said support means
longitudinally of said mandrel to move said locator and stop
members out of engagement with the expander means to permit the
members to retract from expanded position; and restraining means on
said support member and mandrel engageable to restrain movement of
said support means in one longitudinal direction of said mandrel to
position the locator and stop members in engagement with expander
means on the mandrel, and yieldable to permit further movement of
said connectors in said one direction past said expander means; and
stop means on the mandrel and support means engageable upon
movement of said support means in the opposite longitudinal
direction on said mandrel to dispose the locator and stop members
in engagement with the expander surface to prevent movement of said
support means and to hold said stop members in such engagement with
said expander means against movement in said opposite direction
past said expander means.
16. A locating device of the character set forth in claim 15
wherein the restraining means on the support member and mandrel
comprises: resilient detent means on one of said support member and
said mandrel and stop means on the other of said support member and
said mandrel.
17. A locating device of the character set forth in claim 15
wherein said restraining means comprises: expansible and
retractable member on the mandrel and a shoulder means on the
support member engageable by said expansible and contractable
member; and cam means on at least one of said expansible and
contractable member and said shoulder providing for camming
movement of said expansible and contractable member past said
shoulder in one direction, said member and said shoulder being
engageable to prevent movement of said member past said shoulder in
the opposite direction.
18. A locating device of the character set forth in claim 17 and
frangible means limiting movement of said support means in a
direction which permits camming movement of said expansible and
retractable member past said shoulder, said frangible means being
yieldable to permit said camming movement.
19. In combination in a well flow conductor: a plurality of landing
nipples connected at longitudinally spaced positions in said well
flow conductor and each having an annular locking recess therein
and a stop and locating shoulder thereon spaced a predetermined
longitudinal distance from said locking recess, and a locator and
setting tool device adapted for use in locating and anchoring a
well tool locking device having locking members thereon in a
selected one of said plurality of landing nipples and comprising: a
setting tool subassembly including a body having means thereon for
connecting said body with the well tool locking device, and means
for moving the locking members of said well tool device to
anchoring engagement in the locking recess of the landing nipple; a
locator and stop subassembly connected with the setting tool and
including an elongate mandrel, a carrier sleeve movable on the
mandrel, a plurality of locator and stop members carried by the
carrier sleeve and movable therewith longitudinally of the mandrel,
expander means on said mandrel engageable with said locator and
stop members for moving the same to expanded positions; first
resilient means on the mandrel engageable with the carrier sleeve
for moving said carrier sleeve longitudinally of the mandrel in one
direction to a position in which the locator and stop members are
in engagement with the expander means restraining means on the
mandrel and carrier sleeve yieldably coengageable to restrain
movement of said sleeve in said one direction longitudinally of the
mandrel past said expander means, said carrier sleeve being movable
in the opposite direction on the mandrel against the force of said
first resilient means to move the locator and stop members out of
engagement with said expander means to permit said members to
retract, whereby the locator and setting tool device may be moved
through each of the landing nipples in the flow conductor, said
locator and stop members engaging a downwardly facing shoulder on
said landing nipple to move said carrier sleeve further in said one
direction on the mandrel to pass said yieldable restraining means,
whereby the locator and stop members may be moved downwardly on the
mandrel below the expander means out of engagement with the
expander means to move to retracted position to pass the downwardly
facing shoulder, whereby the locator and setting tool device may be
moved upwardly through the plurality of landing nipples to a
predetermined selected one of said landing nipples to a position in
which the locator and stop members of the locator and setting tool
device are disposed above the upwardly facing locating and stop
shoulder of said selected nipple, means on said mandrel and said
supporting sleeve coengageable to stop upward movement of said
supporting sleeve in said opposite direction on the mandrel at a
position in which the locator and stop members are engaged with the
expander means and positively held in expanded position, whereby
said locator and expander members will engage said upwardly facing
locator and stop shoulder of said selected nipple to position the
setting tool sub-assembly with respect to the landing nipple in a
position for expanding the locking members of the well tool locking
device in place in the locking recess of the landing nipple, and
means for releasing said means for connecting the setting tool
subassembly with the well tool locking device from connection
therewith only after said locking device has been anchored in place
in the landing nipple.
20. A locator device for locating the position in the well flow
conductor of a plurality of longitudinally spaced upwardly facing
shoulders and a plurality of longitudinally spaced downwardly
facing shoulders and including: a mandrel; means on one end of said
mandrel for attachment thereof to an operating means; a supporting
control sleeve slidable longitudinally on said mandrel; means on
said mandrel limiting the longitudinal movement of said sleeve on
said mandrel; locator and stop dog means carried by said supporting
control sleeve and movable radially thereof between expanded and
retracted positions; and expander member on said mandrel engageable
with said locator and stop dog means for moving said locator and
stop dog means to expanded position and holding the same in
expanded position; yieldable restraining means on said mandrel and
said supporting control sleeve coengageable for positioning said
sleeve at a first position on said mandrel wherein said locator and
stop dog means are disposed in engagement with said expander means;
first biasing means yieldably biasing said supporting control
sleeve to said first position and yieldable to permit said sleeve
to move upwardly longitudinally of said mandrel to move said
locator and stop dog means to a second position on said mandrel out
of engagement with said expander means; said locator and stop dog
means being engageable with the upwardly facing shoulders in said
flow conductor for moving said supporting control sleeve from said
first position to the second position in which the dogs are
permitted to retract, whereby the dogs may pass the upwardly facing
shoulders in the flow conductor, after which said resilient means
biasing said supporting control sleeve back to said first position
on said mandrel in which the dogs are expanded, whereby the device
may be moved upwardly in the flow conductor to engage a downwardly
facing shoulder in the conductor to locate the position thereof;
said yieldable restraining means restraining said sleeve at said
first position on said mandrel while the dogs are in locating
engagement with the downwardly facing shoulder; said mandrel being
movable upwardly with respect to said supporting control sleeve and
said dogs while said dogs are in engagement with said downwardly
facing shoulder to move said supporting control sleeve to a third
position on said mandrel wherein the dogs are positioned below the
expander member on the mandrel in retracted position and may pass
the downwardly facing shoulder and through the restriction
thereabove; second biasing means on said mandrel engageable with
said supporting control sleeve biasing said sleeve to a fourth
position on said mandrel wherein said dogs are again disposed in
engagement with said expander surface means on said mandrel and
held in expanded position; and coengageable means on said mandrel
and said supporting control sleeve engageable when said sleeve is
in said fourth position to prevent further upward movement of said
sleeve on said mandrel and positively retain said dogs in
engagement with said expander surface when the tool device is moved
downwardly in the flow conductor to engage the dogs with an
upwardly facing shoulder in said conductor to provide a positive
stop preventing further downward movement of the mandrel, sleeve
and dogs in the flow conductor and locating the position of the
upwardly facing shoulder in the flow conductor; said device being
movable upwardly to engage the expanded dogs with other downwardly
facing shoulders in the flow conductor thereabove to move the
supporting control sleeve downwardly to said third position in
which the dogs are disposed for retraction to pass said downwardly
facing shoulder and the restriction in the conductor thereabove,
said second biasing means biasing said dogs upwardly to said fourth
position upon passing the restriction in the flow conductor.
21. A well tool for use in a well flow conductor having internal
annular flanges providing upper and lower stop shoulders therein,
comprising: mandrel means; means on said mandrel means for
attaching the same to a well string; expansible and contractable
locator means on said mandrel engageable with said upper and with
said lower stop shoulders in said well flow conductor; means
biasing said locator means toward shoulder engaging position; and
means associated with said locator means shiftable by a
predetermined force applied thereto between a first position
wherein said locator means will pass said stop shoulders in a
downwardly direction but will lodge against said downwardly facing
stop shoulders when encountering the same from below and a second
position wherein said locator means will pass said stop shoulders
in an upwardly direction but will lodge against said upper stop
shoulders when encountering the same from above.
22. A well tool for use in a well flow conductor having an internal
flange providing upper and lower stop shoulders comprising: an
elongate mandrel; means at the upper end of said mandrel for
connecting it to a well tool string; a sleeve disposed about said
mandrel and adapted for movement between upper, intermediate, and
lower positions and having window means through the wall thereof;
dog means disposed in said window means adapted for movement
between an inner retracted position wherein they will not interfere
with said internal flange of said flow conductor and an expanded
position wherein they will lodge against said internal flange;
expander means on said mandrel for moving said dog means to
expanded position upon movement of said sleeve to said intermediate
position; means carried by said mandrel biasing said sleeve towards
said intermediate position; means on said sleeve and said mandrel
releasably coengageable to limit movement of said sleeve between
upper and intermediate positions; said releasable means being
releasable upon application of a predetermined longitudinal force
thereto to move said sleeve to said lower position, said releasable
means then limiting the movement of said sleeve between
intermediate and lower positions.
23. A locator and setting device for releasably anchoring a well
tool in a selected one of a plurality of longitudinally spaced
substantially identical landing nipples in a well flow conductor
each having a locking recess therein and an upwardly facing stop
shoulder thereon spaced from said locking recess, said device
comprising: a setting tool subassembly having means for connecting
the same to said well tool; a locator subassembly connected with
the setting tool subassembly for engaging said upwardly facing stop
shoulder of any selected one of said landing nipples in said well
flow conductor for positioning the setting tool subassembly in
position for anchoring said well tool in said locking recess of
said selected landing nipple; and connector means on the setting
tool subassembly having means for releasably connecting the same to
said well tool to support said well tool and releasable from such
connection with said well tool after the well tool has been
anchored in the selected landing nipple.
24. A device of the character set forth in claim 23 wherein said
setting tool subassembly includes: means for anchoring said well
tool in said selected landing nipple while said well tool is held
in registry with the locking recess in said selected landing nipple
by said locator subassembly and before the said setting tool
subassembly is disconnected from said well tool after said well
tool has been anchored in said selected landing nipple.
Description
This invention relates to new and useful improvements in well
tools, and more particularly to locator tools for locating the
position of lock or stop shoulders or means in the bore of a well
flow conductor, and to locking devices and landing nipples for use
in connection therewith.
One object of this invention is to provide improved means for
locating and engaging lock or stop shoulders in a well flow
conductor.
A particular object of the invention is to provide a locating
device for positioning a well tool in a well flow conductor at a
predetermined position with respect to a stop or lock shoulder in
said conductor.
Another object is to provide a device for locating and engaging
each or any one of a plurality of spaced upwardly and downwardly
facing shoulders in a well flow conductor.
A particular object of the invention is to provide a device which
is provided with means for locating both upwardly and downwardly
facing shoulders in a well flow conductor, and which is operable to
engage the ones of said shoulders facing in one direction to
positively arrest movement of said locating device in a direction
opposite the direction in which the shoulders face.
A particular object of the invention is to provide a locator device
for use in a flow conductor having a plurality of oppositely facing
spaced stop or lock shoulders therein and having expansible and
retractible engaging or locating and stop means thereon yieldably
held in position to engage the ones of said stop or lock shoulders
facing in one direction in said conductor and to be movable thereby
to retracted position to pass said shoulders when said device is
moved in one direction in said flow conductor, and wherein said
engaging means is movable to another position on said device in
which said engaging means will engage the oppositely facing
shoulders in said conductor and be moved thereby to retracted
position when said locator device is moved in the opposite
direction in the conductor but will be held against movement to
retracted position upon engaging any one of said shoulders facing
in said one direction when the locator device is subsequently moved
in said one direction in the conductor, whereby movement of the
locator device in said one direction in said conductor is prevented
and the locator device is positively located in said conductor by
the engagement of the engaging means with said one of said stop or
lock shoulders facing in said one direction.
Another object is to provide a locating device having engaging
means adapted to locate and engage one of oppositely facing stop or
lock shoulders in a well flow conductor, and control means in a
first position on said device resiliently holding said engaging
means in engaging position and movable to permit said engaging
means to retract from such engaging position upon contacting one of
said stop and lock shoulders to permit said device to pass said
shoulder during movement of the locating device in one direction in
said flow conductor, said control means being responsive to a
predetermined longitudinal force applied thereto when said engaging
means is engaged with the other of said oppositely facing shoulders
to be moved to a second position on said device permitting said
engaging means to move to retracted position to pass said other
shoulder upon movement of said device in the opposite direction in
said conductor, said control means positively holding said engaging
means against movement to retracted position to prevent movement of
said engaging means past said one stop or lock shoulder upon
subsequent movement of said device in said one direction in said
conductor to prevent movement of said device past said one shoulder
and thereby locate said device in said flow conductor by means of
said one shoulder.
Still another important object of the invention is to provide a
locating device of the character described which is constructed to
be operable to position said device at any one of a plurality of
longitudinally spaced positions in said well flow conductor in
operative relationship to a stop or lock shoulder at such
position.
A still further object of the invention is to provide a locating
tool which is provided with means for engaging and locating
oppositely facing shoulders projecting into a well flow conductor
in combination with a well tool, and wherein said locating device
is operable to engage one of the shoulders facing in one direction
in said flow conductor to positively arrest movement of said
locating device and well tool in a direction opposite the direction
in which said shoulder faces for locating said well tool at a
desired position with respect to said shoulders.
A particular object of the invention is to provide a locator device
for use in a well flow conductor having a plurality of
longitudinally spaced stop or lock shoulders therein and having
engaging or locating and stop means thereon movable in one
direction in said conductor past said shoulders, and wherein said
engaging means is movable to a position on said device in which
said engaging means is movable past said shoulders when said device
is moved in the opposite direction in said flow conductor, but
wherein said engaging means will engage and prevent movement of
said device past any one of said shoulders facing in said opposite
direction in the conductor to locate the position of said shoulder
in the conductor, to locate well tools connected with said locator
device at the position in said conductor determined by the shoulder
engaged by said locator device, or to locate the deposition of each
of said shoulders in said conductors facing in said opposite
direction in said conductor.
Another object of the invention is to provide, in combination, a
locating tool and a running or inserting tool for a well device
having means for positioning said running tool and said well device
in a predetermined relationship with respect to a stop or lock
shoulder in a well flow conductor.
A still further object of the invention is to provide a device of
the character described wherein the locating device and inserting
or running tool are provided with means for selectively positioning
said locating tool and said inserting tool and the well tool
connected therewith in a predetermined relationship with any
selected one of a plurality of longitudinally spaced stop or lock
shoulders in said well flow conductor.
A particular object of the invention is to provide in a locating
device of the character set forth means for locating a plurality of
stop means or shoulders in a well flow conductor while moving past
said longitudinally spaced stop shoulders in one direction, and
which is operable to engage and locate oppositely facing stop
shoulders or stop means in said well flow conductor successively
during movement of said locating device in the opposite direction
in said well flow conductor.
A still further object of the invention is to provide in a device
of the character described means for positioning said locating tool
at any one of said plurality of longitudinally spaced shoulders in
said well conductor and holding said device against movement in one
direction in said flow conductor while in engagement with said stop
shoulder, whereby said well tool may be operated at said position
in said well flow conductor while said locating device is in
engagement with said stop shoulder.
Still another object of the invention is to provide a running tool
for inserting a well tool in a well flow conductor at any one of a
plurality of longitudinally spaced receiving members or landing
nipples having identical locking configurations, wherein said
running tool includes positioning means engageable with a stop
shoulder of said secondary member to hold said running tool in
operative position with respect to said landing nipple to permit
said running tool to be actuated to dispose said well tool in said
landing nipple.
Still another object of the invention is to provide a running tool
of the character described wherein the locating member holds said
running tool against movement longitudinally in one direction while
permitting a section of said running tool to move in the opposite
direction to dispose said well tool in said landing nipple or to
anchor the well tool in said landing nipple.
Still another object of the invention is to provide a locating
device of the character set forth having means for connecting the
same to a pumpdown tool string for actuation by fluid pressure for
movement in a pumpdown well installation.
A still further object of the invention is to provide a device of
the character described wherein the locating tool is provided with
means for connection with a flexible line operating mechanism for
actuation by such mechanism in a well flow conductor.
Still another object of the invention is to provide a device of the
character described which is adapted for interchangeable use with
pumpdown tool assemblies and a flexible line operating assembly by
substitution of a connector element.
Still another object is to provide a running tool of the character
described which is interchangeably connectable to a pumpdown tool
operating assembly or to a flexible line operating assembly, as
desired.
Another object of this invention is to provide a landing nipple for
use in a well flow conductor and a locking and sealing mandrel for
locating, anchoring and sealing in said landing nipple to support a
flow control device in said flow conductor for controlling fluids
flowing through said flow conductor.
Another object is to provide a landing nipple having means for
connecting it in a well flow conduit, a flow passage therethrough
in substantial axial alignment with the flow passage through the
flow conduit, the nipple flow passage being sufficiently large to
pass conventional wire line and pumpdown tools yet being
sufficiently small to provide an internal shoulder at each end of
the landing nipple, said landing nipple having internal annular
lock recess means intermediate the ends of the nipple and spaced a
predetermined distance from the shoulder at the upper end of the
nipple, and a locking device for use with the landing nipple, said
locking device having expansible locking means engageable in the
internal annular lock recess means and external annular seal means
for sealingly engaging the inner wall of said landing nipple
adjacent said lock recess means.
A particular object of the invention is to provide a landing nipple
and a locking and sealing device adapted to be anchored in said
landing nipple in sealing relation therein, and having locking
means operable to hold said locking and sealing device against
movement in either direction with respect to said landing nipple,
and wherein said landing nipple is provided with a shoulder spaced
longitudinally with respect to the locking recess of said mandrel
for positioning a locating and setting device in position with
respect to said landing nipple to dispose the locking elements of
said locking device in registry with the locking recess in said
nipple for actuation of said locking elements to locking engagement
in said locking recess.
Still another object of the invention is to provide a landing
nipple for connection into a well flow conductor and having a
locking recess and locating shoulder formed thereon and providing
means for locating a well tool locking device in position to be
locked in place in said nipple.
Another object is to provide a running tool for use with the
locking device and landing nipple of the character set forth,
having releasable means thereon for attachment to said lock
mandrel, means engageable with the shoulder at the upper end of the
landing nipple to position the expansible lock means of said
mandrel in registry with the lock recess of said nipple, means for
expanding said lock means into locking engagement with said recess
and means for releasing the running tool from the lock mandrel
after the lock means is locked to permit withdrawal of the running
tool from the flow conduit.
A further object of the invention is to provide a locator device
which is adapted for use to engage and operate any selected one of
a plurality of spaced longitudinally movable side opening sleeve
valve assemblies in a well flow conductor for opening and closing
the lateral flow port of such assembly.
Additional objects and advantages of the invention will be readily
apparent from the reading of the following description of a device
constructed in accordance with the invention, and reference to the
accompanying drawings thereof, wherein:
FIG. 1 is a view partly in elevation and partly in section of a
locating device constructed in accordance with the invention and
showing the device operatively connected to a pumpdown operator
mechanism;
FIG. 2 is a fragmentary view, partly in elevation and partly in
section, of the upper end of the device of FIG. 1 showing a
flexible line operating mechanism connector member connected
thereto;
FIG. 3 is a horizontal cross-sectional view taken on the line 3--3
of FIG. 1;
FIG. 4 is a horizontal cross-sectional view taken on the line 4--4
of FIG. 1;
FIG. 5 is a view similar to FIG. 1 showing the locating device
passing an upwardly facing stop or lock shoulder in a well
bore;
FIG. 6 is a fragmentary view of the device of FIG. 1 showing the
locating and stop dogs of the device engaged with a downwardly
facing stop shoulder for reversing the direction of operation of
the locating device in the well flow conductor;
FIG. 7 is a view similar to FIG. 6 showing the locating dogs of the
locator device passing upwardly past the downwardly facing stop
shoulder of FIG. 6;
FIG. 8 is a view, similar to FIG. 7, showing the locator device
with the locating and stop dogs engaged with the upwardly facing
stop shoulder of the well flow conductor to locate and prevent
downward movement of the locating device past said shoulder;
FIG. 9 is a view similar to FIG. 1 showing a slightly modified form
of the locating device of FIG. 1;
FIG. 10 is a view, partly in elevation and partly in section, of a
further modified form of the locator device of the invention,
showing the same connected to a pumpdown operating mechanism;
FIG. 11 is a view similar to FIG. 10 showing the locating device
with the locating and stop dogs thereon moved to a position to
permit movement of said device in the opposite direction to that of
FIG. 10 and providing a locating or stopping support against an
upwardly facing shoulder passed by the device in the condition
shown in FIG. 10;
FIG. 12 is a view, partly in elevation and partly in section, of a
running tool or a well device having a locator mechanism connected
with the running tool for locating the well device in a
predetermined position, as in registry with a selected one of a
plurality of longitudinally spaced receptacles in a well flow
conductor;
FIG. 13 is a view, partly in elevation and partly in section, of a
modified form of running tool and locator mechanism for locating a
well device in position to be disposed in a predetermined one of a
plurality of longitudinally spaced receptacles in a well flow
conductor;
FIGS. 14-A and 14-B are views, partly in elevation and partly in
section, showing the combined locator and setting tool of FIG. 13
in operation for locating and setting a locking and sealing
mechanism of a well tool in a landing nipple or receptacle in a
well conductor;
FIG. 15 is a view, partly in elevation and partly in section,
showing the locator and setting tool of FIG. 14-A actuating the
locking mechanism of the well tool to anchored position;
FIG. 16 is a horizontal cross-sectional view taken on the line
16--16 of FIG. 15;
FIG. 17 is a fragmentary view, partly in elevation and partly in
section, similar to FIG. 15, showing the locator and setting tool
combination released from and moving out of the locking mechanism
leaving the same locked in the landing nipple;
FIG. 18 is a side elevation of the locking or expander sleeve of
the locking mechanism of the well tool of FIG. 15;
FIG. 19 is a view in elevation of the rear face of one of the
locking dogs of the well tool of FIG. 15, which is used in
combination with the expander of FIG. 18; and,
FIG. 20 is a fragmentary view, partly in elevation and partly in
section, showing the locator device being used to move the sliding
sleeve of a sliding side port valve device to open the same.
In the drawings, FIGS. 1 through 8, the numeral 10 designates
generally a locator device constructed in accordance with the
invention. The locator device includes an elongate mandrel or body
11 shown to be tubular and formed of a lower section 12 having a
central section 13 threaded into its upper end and an upper
connector member 14 threaded onto the upper end of the central
section 13. The upper connector section has a coupler socket 15
formed therein for receiving coupler members 16 of fluid operated
pump down tool locomotive and operator mechanisms of the type shown
and described in the patent to John V. Fredd, U.S. Pat. No.
3,428,346, issued Feb. 18, 1969, whereby the tool is adapted for
operation in the well by through the flow line pump down locomotive
and operator mechanisms.
Slidably mounted on the central mandrel section 13 and on the lower
mandrel section 12 is a control sleeve or member 18, having an
enlarged lower portion 19 and upwardly projecting collet detent
fingers 20 formed thereon. A plurality of lateral apertures 21 are
formed in the enlarged lower portion of the control member or
sleeve and a radially expansible and retractable locating and stop
dog 25 is slidable in each of the apertures 21. As shown in FIG. 4,
each of the dogs 25 has laterally projecting flanges 26 at its
inner end which limit outward movement of the dogs through the
apertures 21. The inner surface 27 of each of the dogs is arcuate
to conform to the cylindrical surface of an expander member or
surface 30 formed on the upper end of the lower mandrel section 12.
The lower external portion 31 of the central mandrel section 13 is
reduced in diameter to be smaller than the expander section 30, and
a tapered surface 32 at the upper end of the expander section
merges with the cylindrical section 31 of the central mandrel
section and provides a recess for the locating stop dogs 25 to
retract inwardly of the lateral apertures 21 when the control
sleeve 18 is moved upwardly on the mandrel to position the dogs
above the expander surface 30. Spaced above the upper end of the
lower mandrel section 12 and formed integral with the medial
portion of the central mandrel section 13 is an external annular
stop and restraining flange 33 which has an abrupt 90.degree. lower
face 34 and a tapered or beveled or upper face 35 which merges
inwardly and upwardly into the reduced upper cylindrical surface 36
of the central mandrel section 13. The lower portion of the upper
mandrel or coupler section 14 is reduced in diameter to provide a
shank 17 which is of the same external diameter as the upper
reduced cylindrical portion 36 of the central mandrel section so as
to form a continuation of said cylindrical section, as clearly
shown in FIGS. 1 and 5.
The collet spring detent fingers 20 in the upper end of the control
sleeve 18 have inwardly projecting hooks 22 which extend inwardly
to overlie the upper beveled surface 35 of the flange 33, as
clearly shown in FIG. 1 and 5. The lower inner surface 23 of each
of the hooks 22 is beveled for a purpose which will be hereinafter
more fully explained. A spring biasing follower ring 37 is slidable
upon the upper reduced portion 36 of the central mandrel section 13
and has an internal annular recess 37a formed in its upper surface
in which the lower end of the helical coil spring 38 is engaged.
The upper end of the spring 38 abuts the downwardly facing shoulder
14a formed on the coupling member above the reduced lower
cylindrical section 17 thereof, so that the spring is confined
between the shoulder 14a and the ring 37 and biases the control
sleeve 18 downwardly on the central and lower mandrel sections
until the inturned hooks 22 on the upper ends of the spring collet
fingers 20 engage the tapered or beveled surface 35 at the upper
end of the flange 33, as shown in FIG. 1. A second helical coil
spring 39 is confined between the lower end of the control sleeve
18 and an upwardly facing annular shoulder 40 formed on the lower
portion of the lower mandrel section 12 at the lower end of the
lower cylindrical section 41 extending downwardly from the lower
end of the expander surface 30 and providing therewith an upwardly
facing stop shoulder 42 for limiting downward movement of the
control member 18 on the mandrel. The spring is therefore held
centered with respect to the lower mandrel section and the lower
end of the control sleeve by the lower cylindrical section 41. The
cylindrical expander section 30 has a reduced or relieved annular
retracting recess 45 formed in its exterior near the lower end
thereof and spaced above the shoulder 42 a distance proper to
receive the inner ends of the dogs 25 when the lower end of the
control sleeve 18 is seated on such shoulder. The recess 45 is of a
sufficient longitudinal dimension to readily receive the locating
and stop dogs 25 when dogs are in retracted position, as shown in
FIG. 7. The lower end of the lower section 12 of the mandrel 11 is
tapered inwardly to serve as a guide for movement of the device
through a well flow conductor, as shown at 47, and the bore 48
through the mandrel permits fluids to pass therethrough as the
device is moved in the flow conductor.
If desired, the pump down coupler member 14 may be removed and
replaced by a wire line connector sub 14b which is threaded onto
the upper end of the central mandrel section 13 as shown in FIG. 2.
The connector sub has a bore 48a communicating with the bore of the
mandrel sections therebelow and lateral openings 48b providing
communication between the bore and the exterior thereof. The upper
end of the connector sub is formed with a screw-threaded pin 14c by
means of which the sub may be connected to the usual flexible line
operating mechanism of jars, stem, etc., (not shown) for actuation
of the locator device by means of such wire line operating
mechanism rather than the pumpdown mechanism used with the upper
mandrel coupler section 14.
In use, the locator device 10 is moved into a well flow conductor
C, such as is shown in FIGS. 5 through 8, either by the pump down
operator mechanism or by the flexible line operator mechanism
connected thereto by means of the sub 14b shown in FIG. 2. As the
device moves through the flow conductor or tubing string C, it will
encounter upwardly facing shoulders S-1 and downwardly facing
shoulders S-2 formed in said conductor. Obviously, the shoulders
may be at spaced points in the conductor and the locating and stop
dogs 25 will engage said shoulders as the device moves through the
conductor.
As shown in FIG. 5, when the locator device has moved to a position
above an upwardly facing shoulder S-1, the lower beveled edges 25a
of the dogs will engage the shoulder S-1 and move the control
sleeve 18 upwardly with respect to the expander or locking surface
30 on the lower mandrel section until the dogs may move inwardly
above the beveled upper end 32 of the lower mandrel section and
enter the annular upper retracting recess 31a provided by the
reduced lower end portion 31 of the central mandrel section. The
dogs are then cammed to a retracted position to permit the outer
surfaces of the dogs to pass the shoulder S-1 and move through the
restricted bore in the flow conductor below the shoulder. The
spring 38 will yield to permit the ring 37 and control sleeve 18 to
move upwardly on the mandrel 11 as the dogs are moved upwardly
toward the upper recess 31a. When the locator and stop dogs 25 have
moved below the downwardly facing shoulder S-2, shown in FIG. 6,
the spring 38 will move the control sleeve 18 downwardly and the
dogs will be moved outwardly to full expanded position by the
engagement of lower surfaces 27a of the dogs with the beveled upper
end 32 of the lower mandrel section 12 until their inner ends 27
again ride upon the expander surface 30. In the expanded position,
the dogs are spaced slightly from the bore wall of the flow
conductor C, as shown in FIGS. 6 and 8, but will interfere with
either the upwardly facing shoulders S-1 or the downwardly facing
shoulders S-2 formed in the conductor C. The dogs will then be in
the position shown in FIG. 1, and upward movement of the locator
device 10 in the flow conductor will move the upper end beveled
ends 25b of the dogs into engagement with the downwardly facing
shoulders S-2 next above and provide means for locating the depth
of such shoulder in the flow conductor, either by the length of the
flexible line in the well, or by means of the fluid volume in the
well flow conductor above the operating mechanism, as is well known
in this art.
Obviously, the operation of moving the locator device through the
well flow conductor downwardly in the well bore may be continued,
and the locator and stop dogs will engage and be moved upwardly to
retracted position on the upper mandrel on the central mandrel
section as they encounter other upwardly facing shoulders S-1 in
the flow conductor C. Also, when the locator device has moved below
a flange or downwardly facing shoulder S-2, the device may be
lifted by means of the flexible line lowering mechanism, or the
pump mechanism may be reversed, to engage the dogs with the
downwardly facing shoulder S-2 while in the expanded position shown
in FIG. 1 to provide an indication of the location of the
downwardly facing shoulders in the conductor.
When the locator device has been moved to the desired depth in the
well bore and it is desired to move it in the opposite direction
out of the well flow conductor, the locator device is moved
upwardly until the dogs 25 engage the nearest downwardly facing
shoulder S-2. Continued upward force applied to the mandrel 11 of
the locator device will move the mandrel upwardly relative to the
control sleeve 18 and the dogs 25, as shown in FIG. 6, to cause the
inwardly extending hooks 22 at the upper ends of the spring fingers
20 on the upper portion of the control sleeve 18 to be cammed
outwardly to move past the flange 33 to the position shown in FIG.
7. The upper ends of the fingers are now disposed below the right
angled lower shoulder surface 34 of the flange 33, and the locating
and stop dogs 25 are moved downwardly below the upper portion of
the expander surface 30 on the lower mandrel section 12 to permit
the dogs to cam inwardly into the lower annular retracting recess
45 formed in the lower portion of the expander section, as shown in
FIG. 7. When the hooks at the upper ends of the fingers 20 move
below the flange 33, the spring follower ring 37 engages the upper
beveled surface 35 of the flange 33 and downward movement of the
spring ring by the upper spring 38 is terminated by such
engagement. The control sleeve 18 is therefore free to move
upwardly on the lower mandrel section without resistance to such
movement by the spring 38. Downward movement of the control sleeve
is resisted by the lower helical coil spring 39, which biases the
control sleeve upwardly on the mandrel to a position in which the
upper ends of the hooks 22 of the fingers 20 engage the lower
shoulder 34 of the flange 33 on the central mandrel section to stop
further upward movement of the control sleeve and position the
locating and stop dogs 25 in registry with the upper expander
surface 30 on the lower mandrel section.
After the control sleeve has been moved to the position shown in
FIG. 7, the locating and stop dogs 25 will move inwardly in the
lower retracting recess 45 to the retracted position shown in FIG.
7, the engagement of the beveled upper surfaces 25b of the dogs
with the downwardly facing shoulders S-2 moving the dogs inwardly
to the retracted position, in which they will pass through the
restriction formed in the bore of the flow conductor C above the
downwardly facing shoulder S-2 and will pass through such
restriction to a position above the upwardly facing shoulder S-1
next above the restriction through which the dogs have just passed.
As the dogs move out of the restriction, they will be cammed
outwardly to expanded position by the engagement of the beveled
inner upper ends surfaces 27b with the beveled shoulder 45a at the
upper end of the annular lower retracting recess 45, and the inner
surfaces 27 will then ride on the upper expander surface 30 in
fully expanded position, as shown in FIG. 8. In this position, the
lower beveled surface 25a of the projecting ends of the locating
and stop dogs are disposed to interfere with the upwardly facing
shoulder S-1 next therebelow in the flow conductor upon downward
movement of the locator device in the flow conductor. Upon the
occurrence of such engagement, the downward movement of the locator
device is stopped or further downward movement is prevented and the
location of the upwardly facing shoulder S-1 may then be determined
by means of measurements made with the wire line operating
mechanism or by the fluid contained in the flow conductor above the
pump down operating mechanism, in the well known manner.
It will further be seen that the engagement of the upper ends of
the hooks 22 on the upper ends of the spring fingers 20 of the
control sleeve with the abrupt 90.degree. lower shoulder surface 34
of the flange 33 will prevent upward movement of the control sleeve
18 on the mandrel and downward movement of the mandrel with respect
to the upwardly facing shoulder S-1 will be positively prohibited
or prevented by the engagement of the dogs with the shoulder. The
dogs carried by the control sleeve 18 which is held against further
upward movement by the engagement of the upper ends of the fingers
with the downwardly facing shoulder 34 of the flange 33 on the
central mandrel section 13 thus provide a stop against downward
movement of the locator device in the flow conductor at the
location of the upwardly facing shoulder S-1 with which the dogs
are in engagement. Also, this stopping or locating engagement of
the dogs with the upwardly facing shoulder S-1 provides means for
locating well tools at predetermined positions with respect to such
shoulder, as will be hereinafter more fully explained.
Subsequent upward movement of the locator device in the flow
conductor C will cause the dogs to cam inwardly to a retracted
position as they engage downwardly facing shoulders S-2 to pass
through the restrictions above the downwardly facing shoulders. As
the dogs pass above the restrictions, they will be cammed outwardly
by the cam surface 45a engaging the inner beveled surfaces 27b of
the dogs, the spring 39 biasing the sleeve upwardly to cause the
dogs to be cammed outwardly to the expanded position. After the
dogs have passed through the restriction below the next upwardly
facing shoulder S-1, the locator device may be moved downwardly to
move the dogs into engagement with the upwardly facing shoulder to
provide a measure for locating such shoulder in the well flow
conductor. This process may be repeated until the locator device is
moved completely upwardly through the conductor out of the well,
and the location of all upwardly facing shoulders determined in the
manner just described.
It will, therefore, be seen that a locator device has been provided
which may be utilized to locate each of a plurality of upwardly and
downwardly facing shoulders in a well flow conductor as the device
is moved through the flow conductor. The device may be utilized to
locate downwardly facing shoulders as it is moved into the flow
conductor and may be utilized to locate and detect and locate the
position of upwardly facing shoulders in the flow conductor as it
is moved upwardly in the opposite direction out of the well flow
conductor.
Also, it will be seen that the device provides a positive stop
against downward movement when in engagement with any one of the
upwardly facing shoulders in the well flow conductor after the
control sleeve of the locating device has been moved to its lower
position on the mandrel shown in FIGS. 7 and 8.
A slightly modified form of locator device 110 is shown in FIG. 9.
In this device the central mandrel section 113 is shortened and is
threaded into the lower mandrel section 112 above the expander
surface 130 formed on the upper end thereof. The flange 133 is
formed on the lower mandrel section intermediate the ends of the
externally reduced cylindrical portion 145 of said lower mandrel
section between the expander surface 130 and the base or head 147
of the lower end thereof. The flange has a beveled upper surface
135 and an abrupt or right-angle lower surface 134 corresponding to
those of the form first described.
A control sleeve or member 118 has an enlarged portion 119 at its
upper end and is provided with downwardly extending resilient
spring fingers or collet members 120 having inwardly facing hook
members 122 on their lower ends. The extreme lower ends 123 of the
hook members are beveled inwardly and upwardly to correspond
substantially to and coact with the beveled upper surface 135 of
the flange 133, and the upper surfaces 124 of the hooks 122 extend
inwardly at right angles to provide an abrupt surface which will
engage beneath the lower right-angle surface 134 of the flange to
limit upward movement of the control sleeve 118 with respect to the
mandrel, as will be explained. The upper spring 138 is confined
between the shoulder 14a at the lower end of the upper mandrel
section 14 or the corresponding shoulder 14d on the connector sub
14b while its lower end is disposed in an internal annular recess
137a formed in the upper inner end surface of the large upper
section 119 of the control sleeve 118, whereby the spring is
confined between the shoulders 14a or 14b and the shoulder 137a to
bias the control sleeve downwardly on the mandrel. In FIG. 9 the
control sleeve is shown in position for movement of the locating
device into the well conductor, the control sleeve 118 being
movable upwardly relative to the expander surface 130 to permit the
dogs 125 to move inwardly to retracted position to pass through the
restrictions below the upwardly facing shoulders in the flow
conductor. The lower spring 139 surrounds the collet or spring
fingers 120 and is confined between an upwardly facing shoulder 140
at the lower end of the lower mandrel section 112 and a downwardly
facing shoulder 119a at the junction of the upper ends of the
spring fingers and the lower end of the enlarged portion 119 of the
control sleeve. The spring 139 biases the control sleeve
upwardly.
When the locator device 110 has been moved to the lowermost
position in the well bore to which it is desired to be inserted, it
is then moved upwardly until the beveled upper ends 125b at the
upper outer ends of the dogs engage a downwardly facing shoulder
S-2 in the flow conductor, whereupon further upward movement of the
mandrel 111 with respect to the dogs will move the control sleeve
118 downwardly, camming the hooks 122 at the lower ends of the
spring or collet fingers outwardly to pass the flange 133 and move
the hooks below the lower shoulder surface 134 of the flange. In
this position, upward movement of the control sleeve 118 is
prevented by the engagement of right-angle upper surfaces 124 the
hooks with the shoulder 134, but the control sleeve may move
downwardly to permit the dogs 125 to move below the expander
surface 130 into the lower retracting recess 145 above the shoulder
133, and so move to retracted position to permit the locator device
to pass upwardly through the restriction in the flow conductor
above the downwardly facing shoulder S-2 in the conductor. The
operation of the locator device 110 is otherwise identical to that
of the form first described.
A further modified form of the invention is shown in FIGS. 10 and
11, wherein the locating device 210 has an elongate mandrel 211
provided at its upper end with coupler member 214 threaded onto a
reduced pin at the upper end of the mandrel, by means of which the
device may be connected to the coupling element 16 of the pumpdown
equipment in the same manner as the form of FIG. 1. Of course,
rather than the coupler member 214 a suitable wire line connector
sub such as the connector sub 14b of FIG. 2 may be threaded onto
the upper end of the mandrel for operation of the device by
flexible line mechanisms. The control sleeve 218 carries locator
and stop dogs 225 which are in all respects identical to the dogs
25 of the form first described and which are slidable in lateral
apertures 221 formed in the enlarged portion 219 of the control
sleeve. A reduced depending tubular boss 219a projects from the
lower end of the control member and a lower helical coil spring 239
surrounds the boss and is confined between the shoulder at the
lower end of the enlarged portion 219 of the control member and an
upwardly facing shoulder 240 above the point or head 247 on the
lower end of the mandrel. This mandrel is not shown as provided
with a longitudinal flow bore, but such a bore may be provided if
desired.
The reduced tubular upper portion 220 of the control member 218
projects upwardly above the enlarged portion 219 and an upper
helical coil spring 237 surrounds the reduced portion and abuts
against an upwardly facing shoulder 236 between the enlarged
portion 219 and the reduced upper portion 220 and is confined
between such upwardly facing shoulder and the downwardly facing
shoulder 214a of the coupler member or upper mandrel section 214,
so biases the control sleeve 218 downwardly relative to the
mandrel. An elongate longitudinal slot 222 is formed in the large
portion of the control sleeve between the dogs 225 and a shear pin
223 is inserted in above 224 in the cylindrical expander section
230 of the mandrel and limits downward movement of the control
sleeve on the mandrel, while permitting upward movement of the
sleeve relative to the mandrel to the length of the slot. A plunger
or latch member 250 is slidable in a diametrically extending bore
or aperture 251 formed in the upper reduced portion 213 of the
mandrel above the expander portion 230 and is biased outwardly by
means of a helical coil spring 252 confined between the bottom of
the bore and the inner end of the latch plunger. A retaining pin
253 is positioned transversely of the lower portion of the aperture
or bore 251 and engages a relieved key way 254 formed in the lower
surface of the plunger to limit outward movement of the plunger in
the bore and to retain the plunger in place in the bore. The upper
outer end edge of the plunger is beveled to provide a camming
surface 225 for engaging the downwardly facing inwardly and
upwardly inclined cam surface 235 of the internal annular flange
233 formed in the bore of the reduced upper portion of the control
sleeve. The shoulder 234 at the upper end of the flange extends
inwardly at substantially right angles to the bore and provides an
abrupt locking surface against which the lower projecting outer end
surface of the plunger 250 may engage, as will be explained.
An annular retracting recess 245 is formed in the medial portion of
the cylindrical expander section 230 of the mandrel 211 and the
lower portion 230a of the expander surface provides a guide for the
control sleeve 218 as it moves downwardly on the mandrel until its
lower end engages the upwardly facing shoulder 246a at the upper
end of the lower cylindrical portion 246 of the mandrel.
In use, the device operates in the same manner as the forms
previously described. Upon encountering upwardly facing shoulders
S-1 in the flow conductor the beveled lower outer surfaces 225a of
the dogs 225 will move the control sleeve upwardly against the
spring 237 until the dogs are positioned above the shoulder 232 at
the upper end of the cylindrical expander surface 230, where the
dogs may move inwardly to retracted position in the retraction
recess area 31a, to pass restrictions in the well conductor, such
as flanges or the like. When the device has reached the position at
which it is desired to reverse the direction of motion of the tool
in the flow conductor, it is moved in the opposite direction in the
conductor, toward the surface, and the upper beveled shoulders 225b
of the dogs 225 will engage the next above downwardly facing
shoulder S-2 in the conductor and move the control sleeve 218
downwardly, shearing the pin 233 as shown in FIG. 11, and moving
the sleeve sufficiently downwardly to move the internal annular
flange 233 below the latch plunger 250. The plunger is thus
disposed above the upwardly facing abrupt shoulder 234 on the
flange and the control sleeve 218 cannot move upwardly thereafter,
so that when the device is moved downwardly in the well in the
first direction of movement, the locking dogs will engage the
upwardly facing shoulders S-1 in the flow conductor to accurately
locate the shoulders and to stop or prevent further downward
movement of the device, and so located the tool with respect to the
shoulder in the same manner as the tool of the form first
described. However, it will readily be seen that upon further
upward movement of the tool in the opposite direction, the upper
beveled surfaces 225b of the dogs will engage the downwardly facing
shoulders S-2 in the conductor to move the control sleeve 218
downwardly against the force of the lower spring 239 until the dogs
are in registry with the retraction recess 245 formed in the
expander surface of the mandrel, where the dogs may move inwardly
to retracted position to permit the tool to pass the shoulder and
any restriction thereabove. It will therefore be seen that the
device functions in the same manner as the devices previously
described.
Of course, if desired, the latch plunger 250 may be replaced by an
expansible annular snap or lockring of a diameter sufficiently
smaller than the bore 220a of the upper portion 220 of the control
sleeve 218 to permit the sleeve to move freely with respect
thereto, but which will interfere with and engage the upwardly
facing shoulder 234 of the internal annular flange 233 in the
control sleeve to positively hold the sleeve against upward
movement after the sleeve and the locating and stop dogs have been
moved to the lower position shown in FIG. 11. It is also believed
to be clearly apparent that other latching means may be provided
than those just described. In the case of the spring snap ring
being used as a latch member, the mandrel may be provided with an
axial bore for flow therethrough.
A combination locating device and well tool running or setting tool
is illustrated in FIG. 12. The locating device 310 has a setting
tool 360 formed integral with the lower portion of the mandrel 311
of the locating device. The setting tool comprises an elongate
tubular sleeve 361 having an inwardly and upwardly inclined
downwardly facing stop shoulder 362 at the upper end of its bore
363 the lower portion of which is enlarged to a point spaced
slightly below the shoulder 362. An upper shear pin bore 364
receives a shear pin 365 which is disposed to engage and support an
upper movable member of a well tool T which is to be set by means
of the device. A lower shear pin bore 366 is provided in the lower
portion of the sleeve for receiving a lower shear pin 367 for
connecting the sleeve to the body of the well tool which is to be
anchored by means of the setting tool. An elongate plunger 368
having an enlarged head 369 on its lower end is slidable in the
bore 348 of the mandrel 311 of the locator tool, and the upper end
of the plunger 368 is connected by threads to the coupler member
314 in the same manner as was the coupler of the locator device
first described. An upper helical coil spring 338 abuts the
downwardly facing shoulder 314a of the coupler member and rides
against a follower ring 337 which engages the upper hook ends 322
of the spring or collet fingers 320 of the control sleeve 318 which
carries locating and stop dogs 325 slidable in radial slots 321
formed in the enlarged portion 319 of the sleeve. The spring 338
biases the control sleeve downwardly to the position shown in FIG.
12 wherein dogs are in engagement with the upper cylindrical
expander surface 330 of the lower section 312 of the mandrel 311,
and are so held in expanded locating position. The hook members 322
at the upper ends of the spring fingers 320 engage over an external
annular flange 333 formed on the upper section 313 of the mandrel,
so that downward movement of the control sleeve member 318 is
yieldably limited by the engagement of the hooks with the flange. A
lower helical coil spring 339 is confined between an upwardly
facing shoulder 340 on the lower end of the lower mandrel section
312 and the lower end of the enlarged portion 319 of the control
member, and so acts to bias the control sleeve member upwardly on
the mandrel.
The locator device is lowered into the well flow conductor in the
usual manner, the dogs 325 moving the control sleeve member 318
upwardly as the device passes inwardly projecting upwardly facing
shoulders in the bore of the well flow conductor C. When the device
has reached the desired position, the locator tool and running tool
are moved upwardly in the opposite direction in the well flow
conductor until the cam surfaces 325b at the upper outer ends of
the dogs engage the downwardly facing shoulder S-2 at that location
and move the control sleeve 18 downwardly, the hooks 322 at the
upper end of the spring fingers 320 camming outwardly over the
flange 333 to permit the control sleeve to move downwardly until
the hooks are disposed below the downwardly facing shoulder 334 of
the flange. Upward movement of the control sleeve and the dogs is
then prevented when the hooks at the upper ends of the fingers
engage the downwardly facing shoulder 334. The dogs, of course, may
move downwardly and inwardly as they pass the downwardly facing
shoulders S-2 until they enter and pass through the restriction
thereabove, whereupon the lower spring 339 will bias the control
sleeve upwardly to move the dogs into engagement wit the expander
surface 330, which holds the dogs in locating and stopping position
on the mandrel. Subsequent movement of the mandrel in the first
downward direction in the well flow conductor will then bring the
lower beveled outer surfaces 325a of the dogs into engagement with
the upwardly facing shoulder S-1 at the desired position, and
downward movement of the locator device is positively stopped by
such engagement since the control sleeve 318 cannot move upwardly
because of the engagement of the upper ends of the hook portions
322 of the spring fingers with the downwardly facing shoulder 334
of the external annular flange 333 on the mandrel. This engagement
of the dogs with the desired upwardly facing shoulder S-1 locates
the running tool 360 with respect to that shoulder, and so locates
the well tool T at a predetermined position with respect to the
shoulder engaged by the dogs.
Downward force applied to the plunger 368 will then move the
enlarged head 369 downwardly and force the upper movable portion or
slip carrier 371 of the well tool T downwardly relative to the
lower body portion 372 of the well tool and shear the upper shear
pin 365 to permit such movement. The lower shear pin 367 holds the
body portion 372 against movement while the upper portion is moved
downwardly. Locking members (not shown) on the well tool are then
moved to expanded locking position in the usual manner, and the
well tool is thus locked in the flow conductor at a point therein
predetermined by the position of the desired upwardly facing
shoulder S-1 engaged by the dogs 325. After the well tool has been
locked in place in conductor, the combined locator tool and setting
tool are moved upwardly in the opposite direction, and such upward
movement will shear the lower shear pin 367 to free the setting
tool sleeve 361 from connection with the well tool T and permit the
setting tool and locator device to be moved upwardly out of the
well flow conductor away from the anchored well tool T.
The combined locator device and setting tool therefore provides
means for positively positioning a well device at a predetermined
location in a well flow conductor with respect to the upwardly
facing shoulder S-1 selected for use, and also provides means for
effecting operation for the setting tool 360 for locking the well
tool in place at such location.
In FIG. 13, a modified form of setting tool 460 is shown connected
with the locator device 410 which is generally identical to the
locator device 310 just described. All elements of the locator
device are the same as those of the form just described, but the
lower mandrel section 412 has a tubular reduced depending setting
tool body portion 461 extending downwardly from the lower end
thereof and this body portion 461 is further reduced to provide
supporting stem or shank 465 at its extreme lower end having a boss
or head member 466 screw threaded into a bore 467 in the lower end
of the shank. The head member has an enlarged annular flange
locking surface 468 which is engaged by the depending collet or
detent fingers 470 of a collet support or detent connector sleeve
member 471 which is slidable on the lower reduced shank 465 of the
setting tool. The connector sleeve 471 is held against movement on
the shank by a shear pin 472 which extends through a transverse
diametrical opening 473 in the shank and matching openings 475 in
the upper end of the collet sleeve. Thus, the collet sleeve 471 is
held in the upper position on the shank, shown in FIG. 13, with the
external bosses 480 at the lower ends of the spring fingers 470 of
the collet sleeve positively held in expanded supporting position,
for a purpose which will be hereinafter more fully explained.
The setting tool body portion 461 is provided with a pair of
diametrically opposed elongate longitudinally extending slots 463,
and an elongate transverse connecting pin 484 extends through a
diametrical aperture 485 in the lower end of the elongate stem 487
which is slidably mounted in the bore of the mandrel 411 and
extends downwardly into the bore 462 of the setting tool body. A
drive ring 488 is slidable on the outer cylindrical surface of the
setting tool body 461 and is secured to the lower end of the stem
by the engagement of the opposite ends of the pin in diametrically
opposed openings 486 in the drive ring, so the drive ring is
movable with the stem 487 for setting a well tool as will be
hereinafter more fully explained. The upper end of the stem 487 is
threaded into the reduced lower shank or stem portion 417 of the
coupler or upper mandrel section 414 which has a socket 416 for
receiving the connector coupler member 16 of the pumpdown operating
tool mechanism. The upper helical coil spring 438 engages the
downwardly facing shoulder 414a at the lower end of the coupling
member and presses downwardly on the spring follower ring 437 which
biases the control sleeve 418 downwardly in the same manner as the
control sleeve of the locator device just described. The dogs 425
also function in the same manner, being held in expanded position
by the expander surface 430 until they engage an upwardly facing
shoulder S-1 to move the control sleeve upwardly against the force
of the spring to permit the dogs to retract against the outer
cylindrical portion 413 of the central mandrel section 413 to pass
the shoulder in the manner already described. The lower helical
coil spring 439 is confined between the lower end 419a of the
control sleeve and the upwardly facing shoulder 440 of the lower
mandrel section 412.
The locator device and setting tool combination of this form is
adapted to be used with a landing nipple or receptacle N-1 and a
well tool T-2 comprising a locking assembly L-1 and a sealing
mandrel assembly P-1, which may be used to support a well flow
control N or other device, as shown in FIGS. 14-A and 14-B.
The landing nipple N-1 comprises an elongate tubular body or
housing 500 having external threads at its opposite ends by means
of which it may be connected by couplings 501 in the flow conductor
C. As shown in FIG. 14-A, the body has an upwardly facing stop
shoulder 502 at the upper end of its bore 504 for engagement by the
locating and stop dogs 425 of the locator device 410 to position
the locking device L-1 in proper position in the landing nipple N-1
to be anchored and locked therein. Spaced a predetermined distance
from the upper shoulder in the bore of the landing nipple is an
internal annular locking recess 505 which has opposed divergent
shoulders 506a and 506b at its ends between which the locking dogs
of the locking device L-1 are adapted to be expanded to hold the
well tool securely positioned in the landing nipple. Below the
internal annular locking recess 505 the bore of the nipple provides
an elongate internal cylindrical sealing surface which is adapted
to be engaged by the sealing assembly P-1 to direct fluids flowing
through the flow conductor into and through the bore of the mandrel
and into the conductor thereabove in the usual manner. The position
of the annular locking recess 505 in the bore of the landing nipple
below the upwardly facing stop shoulder 502 at the upper end
thereof is such that when the dogs 425 of the locator device 410
are engaged with said stop shoulder, the locking dogs of the
locking device L-1 are disposed in registry with the locking recess
505 in position to be expanded into locking engagement in the
recess, as shown in FIGS. 15 and 17.
The locking assembly or device L-1 includes an elongate tubular
mandrel 530 having its upper cylindrical portion reduced in
external diameter to provide a neck 534 on which a plurality of
locking dogs 535 are supported by means of a cylindrical supporting
or dog carrying sleeve 536 threaded at its lower end 536a onto the
enlarged lower portion 530a of the mandrel 530 below the neck 534.
The upper portion of the bore of the dog-supporting sleeve is
enlarged to provide an elongate internal annular recess 537 having
an inwardly projecting annular stop flange 537a formed in the
medial portion of said recess. The locking dogs 535 have handles
535a which extend upwardly in the bore of the dog-carrying sleeve
536 and have a pair of longitudinally spaced outwardly projecting
lugs or bosses 539a and 539b formed on their upper ends and
engaging in the elongate recess 537 on opposite sides of the
flanges 537a for retaining and supporting the dogs pivotally at
their upper ends by means of such engagement of the internal
projecting flange and the external bosses on the handles of the
dogs. The inner surfaces 535b of the dogs are inclined inwardly and
upwardly from adjacent the lower boss upwardly to a point near the
lugs in the upper ends of the dogs to permit the dog handles to
pivot in the annular space between the neck 534 of the mandrel and
the bore of the slip-carrying sleeve 536 at the recess 537.
An expander sleeve 545 is slidable on the neck 534 of the mandrel
and has its lower portion longitudinally slotted as at 545a to
straddle and slide longitudinally along the dog handles 535a and
provide a plurality of expander legs 546 having expander bosses or
locking surfaces 547 at their lower ends adapted to engage the
inwardly facing lock surfaces or portions 535c at the back of the
bosses 535e of the lock dogs 535 to hold the lock dogs in the
expanded position shown in FIGS. 15 and 17, when the expander
sleeve is moved downwardly relative to the dog carrier 536 to move
the expander bosses into engagement with the inner lock surfaces
535c of the dogs on either side of the handles of the dogs. The
structure of the expander sleeve and the locking dogs is clearly
illustrated in FIGS. 16, 18 and 19, and in the patent to Tamplen,
U.S. Pat. No. 3,207,222. The locking dogs are thus held positively,
by the locking surfaces 547 of the legs 546 of the expander sleeve,
in the expanded locking position shown in FIGS. 15 and 17 to
prevent displacement of the mandrel in either longitudinal
direction from the bore of the landing nipple N-1.
The expander sleeve 545 is held in the upper position shown in FIG.
14-A by means of at least one shear pin 549 extending through a
suitable aperture 549a in the upper end of the dog carrying sleeve
above the recess 537 and engaging in a registering aperture 549b
formed in one of the legs of the expander sleeve 545, whereby the
expander sleeve is positively held against downward movement with
respect to the locking dogs 535 until the shear pin 549 has been
sheared, as will be hereinafter explained. A knuckle joint assembly
533 joins the locking mandrel device L-1 to the sealing mandrel
device P-1. The knuckle joint assembly comprises a tubular ball
knuckle member 555 having a spherical ball segment 566 at its upper
end. The ball segment is seated upon a plurality of
circumferentially spaced pads or bushings 557 which are confined
within a thimble sleeve member 558 threaded on the reduced lower
end of the mandrel 530 of the lock assembly L-1 below the slip
carrier sleeve 536. The thimble sleeve 558 is locked in place in
any suitable manner on the threaded lower end of the mandrel to
prevent displacement of the thimble from the mandrel and to provide
a positive connection between the locking assembly L-1 and the
sealing assembly P-1. The lower end portion or skirt 554 of the
tubular ball knuckle member 555 is threaded onto the upper end of a
tubular packing mandrel 560 of the sealing assembly P-1.
A pair of opposed sets of a plurality of sealing rings 562 are
mounted on the reduced upper portion 561 of the mandrel 560, the
sealing rings being shown to be of V-type rings with the opposed
sets disposed on opposite sides of a central spacer 563 and
supported between backup rings 564 at the upper and lower ends of
the sets of sealing rings. The backup rings are confined between
the lower end of skirt 554 of the knuckle member 555 at the upper
end of the packing mandrel and an upwardly facing shoulder 565 at
the upper end of an external annular flange 566 formed at the lower
end of the packing mandrel. The tubular packing mandrel receives in
the threaded lower end 567 of its bore the threaded reduced upper
end of a well flow control device or other well device W. The well
device may be a safety valve, a flow regulator, or any other
desired suitable flow controlling device or well tool adapted for
use in the well flow conductor and to be anchored at the location
of the landing nipple N-1.
The locking mandrel assembly L-and the sealing mandrel assembly P-1
are run into the well flow conductor C by means of the combination
setting tool 460 and locator device 410 of FIG. 13, which is
reproduced in FIG. 4-A showing the setting tool connected to the
mandrel of the locking device L-1. The neck 534 of mandrel 530 of
the locking device has an internal annular groove 570 formed
therein near its upper end, and the bosses 480 of the collet
supporting sleeve 471 of the running tool are disposed in said
recess and engage the downwardly facing shoulder 571 at the upper
end of the recess to support the mandrel for lowering into the well
flow conductor. The length of the body portion 461 and the shank
465 of the setting tool is such that the shoulder 488a formed by
the lower end of the annular setting ring 488 of the setting tool
is disposed closely adjacent the upper end of the expander sleeve
545 when the collet bosses 480 are engaged in the mandrel recess
570, as shown in FIG. 14-A. The bore of the expander sleeve has an
internal annular recess 580 formed therein having a downwardly
facing shoulder 581 at its upper end which is used for retrieving
the tool in the manner to be hereinafter described. The expander
member 545 is held in the upper position shown in FIG. 14-A by
means of the shear pin 549.
When the combined setting tool and locator device has been lowered
into the well flow conductor C to a position below the landing
nipple N-1, so that the locating and stop dogs 425 of the locator
device are disposed below the downwardly facing shoulder 507 at the
lower end of the tubular housing 500 of the landing nipple N-1, the
motion of the tools is reversed and the locator device is moved
upwardly in the opposite direction to bring the upwardly facing
surfaces 425b of the dogs 425 into engagement with the downwardly
facing shoulder and move the control sleeve 418 of the locator
device downwardly to the position shown in FIG. 14-A. The control
sleeve is now prevented from moving upwardly by the engagement of
the hooks 422 with the downwardly facing shoulder 434 of the flange
433 on the locator mandrel. After the string of tools has moved
upwardly until the dogs 425 have passed above the upwardly facing
shoulder 502 at the upper end of the bore of the landing nipple
N-1, the string of tools is again lowered in the first direction in
the well until the downwardly facing lower beveled outer edge
surfaces 425a of the dogs engage the upwardly facing shoulder 502
and stop further downward movement of the string of tools with
respect to the nipple. Engagement of the dogs with the shoulder 502
therefore positions and locates the well locking device L-1 of the
assembly in a position in which the bosses 535e of the locking dogs
535 of the locking device are in registry with the locking recess
505 in the landing nipple and in a position to be expanded into
locking engagement in said recess. Also, the sealing mandrel
assembly P-1 is disposed in the sealing section of the bore 504 of
the landing nipple below the locking recess 505 in position to seal
therewith, in the usual manner.
Downward force applied to the stem 487 of the setting tool moves
the transverse connecting pin 484 downwardly with respect to the
body 461 of the setting tool and moves the setting ring 488
downwardly on the exterior of such body portion 461 of the setting
tool. Such downward movement of the setting ring 488 moves the
expander sleeve 545 downwardly and shears the pin 549 to permit the
sleeve to be moved completely downwardly to expand the dogs 535 to
the locking position shown in FIGS. 15 and 17 by moving the
expander surfaces 547 of the locking sleeve into engagement with
the inner locking surfaces 535c of the dogs to hold the dogs in
such expanded position.
Since there is no connection between the setting tool and the
expander sleeve 545, the locking device L-1 is now securely locked
in place in the landing nipple N-1 against movement in either
longitudinal direction, the upper ends of the bosses of the locking
dogs 535 being engageable with the downwardly facing shoulder 506a
of the locking recess 505 and the lower ends of the bosses being
engageable with the upwardly facing shoulder 506b at the lower end
of the recess, to positively prevent displacement of the locking
device in either direction from the landing nipple.
With the locking device so positively locked in place in the
landing nipple, upward force is applied to the locator device and
setting tool by the pumpdown fluid operator mechanism to move the
lower reduced shank or stem portion 465 of the setting tool
upwardly with respect to the collet sleeve 471 and shear the shear
pin 472. When the shear pin is sheared, the collet sleeve 471 is
moved downwardly on the mandrel until the internal annular shoulder
476 in the upper end of the bore of the sleeve engages the upwardly
facing shoulder 468a at the upper end of the expander surface 468
on the head member 466 at the lower end of the reduced shank of the
setting tool. Such engagement prevents further downward movement of
the collet sleeve 471, but moves the spring fingers 470 downwardly
to project below the expander surface 468 where the fingers may
flex inwardly at their lower ends to permit the bosses 480 to pass
the shoulder 571 at the upper end of the recess 570 in the mandrel
neck 534, as shown in FIG. 17, to disconnect the setting tool from
the locking mandrel assembly. The setting tool and locator device
may then be moved upwardly in the well flow conductor out of the
well bore.
A suitable retrieving tool of the usual type (not shown) may be
lowered into the well by means of the pumpdown operator mechanism
to engage in the annular recess 580 in the expander sleeve beneath
the downwardly facing shoulder 581 at the upper end of said recess.
An upward force applied to the expander sleeve by means of the
operator mechanism and the retrieving tool in the usual manner will
then move the expander sleeve 545 upwardly to withdraw the expander
surfaces or lock surfaces 547 at the lower end of the expander
sleeve from engagement with the lock surfaces 535c of the locking
dogs 535. A continued upper pull will cause the bosses 535e of the
locking dogs 535 to cam inwardly along the downwardly facing
beveled shoulder 506a at the upper end of the locking recess in the
landing nipple to retracted position and thus permit the entire
assembly of locking device, sealing mandrel assembly and well tool
to be moved upwardly out of the well flow conductor in the usual
manner.
It will therefore be seen that the combination locator device and
setting tool provides means for positively and accurately
positioning a well tool at a desired position within the well bore
as, in this case, in the landing nipple N-1 with the locking dogs
thereof disposed in registry with the locking recess in the landing
nipple in position to be expanded into locking engagement in said
recess to positively lock the locking mandrel device against
movement in either direction in the landing nipple.
The locator device of the invention may also be used to operate a
lateral port sliding sleeve valve 700 having a tubular housing or
body 701 threadedly connected at its upper end to the flow
conductor C and provided with a bore 702 which is enlarged below a
shoulder 703 formed in the upper end of the bore to limit upward
movement of a sliding sleeve member 705 in the housing. A stop
bushing or sub 708 is threaded into the lower end of the housing to
limit downward movement of the sleeve 705 in the housing, and the
other end of the sub may be connected to the flow conductor. A
lateral flow port 710 is formed in the wall of the housing
intermediate its ends and a complementary port 715 is formed in the
wall of the sleeve 705 at a point at which it will be in
longitudinal registry with an internal annular recess 711 in the
bore of the housing 701 which communicates with the lateral port
710 in the housing, to assure passage of fluids from the port 715
in the sleeve to the port 710 in the housing when the lower end 706
of the sleeve is in engagement with the upper end of the bushing
708. O-ring seals 716 and 717 are disposed in suitable internal
annular recesses in the bore of the housing 701 above and below,
respectively, the recess 711, and these O-rings seal against the
external cylindrical surface of the sliding sleeve 705. When the
sleeve is in the upper position shown in FIG. 20, the lateral ports
are closed. When the sleeve is moved downwardly to position the
port 715 in the sleeve in registry with the annular recess 711 in
the housing, the ports are open to flow therethrough.
The locator device 10 of FIGS. 1 through 7 is adapted to be used to
shift the sleeve 705 from the upper closed position to the lower
open position. The locator device is moved downwardly below the
sleeve until the locator and stop dogs 25 thereof are disposed
below the lower end 706 of the sliding sleeve. Upward movement of
the locator device then moves the dogs upwardly to engage the lower
end of the sleeve and move the control sleeve 18 downwardly on the
mandrel 11 to move the hook members 22 at the upper ends of the
spring collet fingers 20 below the external annular flange 33 on
the mandrel in the manner already described. The tool is moved
further upwardly and the dogs cam inwardly into the retracting
recess 45 and will then pass through the bore 718 of the sleeve 705
and upwardly therepast to a point above the upper end of the
sleeve. Reverse motion of the locator device downwardly in the well
in the first direction of movement will then move the beveled
surfaces 25a at the lower outer ends of the dogs into engagement
with the upper end of the sleeve to move the sleeve downwardly from
the upper closed position shown in FIG. 20 to the open position in
which the lower end 706 of the sleeve engages the upper end of the
bushing 708 and the port 715 in the sleeve is in registry with the
annular recess 711 and the lateral port 710 in the housing. Flow
may then take place through the ports. The locator device may be
moved upwardly in the opposite direction out of the flow conductor
or to a position above another lateral port slidable sleeve valve
for opening such valve in the same manner.
From the foregoing, it will be seen that a locator device has been
provided which is capable of locating the position of downwardly
facing shoulders in a well flow conductor during movement of the
locator device into the conductor and of locating upwardly facing
shoulders in the conductor during movement of the device in the
opposite direction upwardly out of the well bore. It will also be
seen that the locator device is constructed to provide a positive
stop limiting or preventing downward movement of the locator device
past any selected one of a plurality of upwardly facing shoulders
in a well bore to position well tools in the flow conductor in
which the shoulders are present at a particular point predetermined
by the position of the desired shoulder.
Also, it will be seen that a combined locator device and setting
tool has been provided for locating and setting well tools in a
well flow conductor at predetermined positions with respect to an
upwardly facing shoulder in said flow conductor. It will further be
seen that the locator device and setting tool is adapted for use
with a landing nipple having a locating stop shoulder formed
thereon and an annular locking recess therein, for positioning the
locking device of a well tool in proper registry with said annular
locking recess for locking the well device in the landing nipple;
and, that the locator device may be used for so locating and
locking the well device in any one of a plurality of longitudinally
spaced identical landing nipples in the flow conductor.
It will also be seen that the locator device is usable for engaging
movable shoulders in a well flow conductor to perform operations
thereupon, such as shifting a sliding sleeve side port valve
between closed and open positions or between open and closed
positions in the well flow conductor.
The foregoing description of the invention is explanatory only, and
changes in the details of the construction illustrated may be made
by those skilled in the art, within the scope of the appended
claims, without departing from the spirit of the invention.
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