U.S. patent application number 10/173501 was filed with the patent office on 2003-12-18 for method and apparatus for installing tubing in a wellbore.
Invention is credited to Underhill, Jasper.
Application Number | 20030230410 10/173501 |
Document ID | / |
Family ID | 27612951 |
Filed Date | 2003-12-18 |
United States Patent
Application |
20030230410 |
Kind Code |
A1 |
Underhill, Jasper |
December 18, 2003 |
Method and apparatus for installing tubing in a wellbore
Abstract
Disclosed is an improved apparatus and method for completing a
wellbore using radially expandable tubing. An expanding tool is
used with sets of rollers positioned to progressively expand the
tubing by rolling along the interior of the tubing.
Inventors: |
Underhill, Jasper; (Sanger,
TX) |
Correspondence
Address: |
John F. Booth
CRUTSINGER & BOOTH
Suite 1950
1601 Elm Street
Dallas
TX
75201
US
|
Family ID: |
27612951 |
Appl. No.: |
10/173501 |
Filed: |
June 17, 2002 |
Current U.S.
Class: |
166/381 ;
166/207 |
Current CPC
Class: |
E21B 43/105
20130101 |
Class at
Publication: |
166/381 ;
166/207 |
International
Class: |
E21B 023/00; E21B
043/10 |
Claims
What is claimed:
1. A method of installing tubing in subterranean portion of a well,
comprising the steps of: a. providing a radially expandable tubing
assembly; b. moving the expandable tubing assembly to a
predetermined subterranean location in the well; and c. expanding
the tubing assembly by moving a tubing expander axially through the
tubing assembly while contacting the interior wall of the tubing
assembly with rollers carried on the expander and wherein the
rollers are mounted to rotate about an axis transverse to the axis
of the tubing assembly.
2. The method according to claim 1, wherein the expander comprises
a plurality of sets of rollers movable between a radially retracted
position and a radially extended position and wherein said method
additionally comprises the step of extending the roller sets before
expanding the tubing assembly.
3. The method according to claim 1, wherein the step of expanding
the tubing assembly is performed by progressively larger sets of
rollers engaging the tubing assembly and rolling along the interior
surface thereof.
4. The method of claim 1 wherein the step of providing a radially
expandable tubing assembly comprises providing a radially
expandable tubular member in the form of a well screen.
5. The method of claim 1 wherein the step of providing a radially
expandable tubing assembly comprises providing a radially
expandable tubular member in the form of solid wall tubing
6. A method of installing tubing in subterranean portion of a well,
comprising the steps of a. providing a radially expandable tubing
assembly; b. moving the expandable tubing assembly to a
predetermined subterranean location in the well; and c. expanding
the tubing by moving a tubing expander axially through the tubing
assembly while contacting the interior wall of the tubing assembly
with rollers carried on the expander and wherein the rollers are
arranged in a plurality of sets and wherein the roller sets do not
all have the same effective cross section.
7. The method according to claim 6, wherein the expander comprises
a plurality of sets of rollers movable between a radially retracted
position and a radially extended position and wherein said method
additionally comprises the step of extending the roller sets before
expanding the tubing assembly.
8. The method according to claim 6, wherein the step of expanding
the tubing assembly is performed by progressively larger sets of
rollers engaging the tubing assembly and rolling along the interior
surface thereof.
9. The method according to claim 6 wherein the step of providing a
radially expandable tubing assembly comprises providing a radially
expandable tubular member in the form of a well screen.
10. The method according to claim 6 wherein the step of providing a
radially expandable tubing assembly comprises providing a radially
expandable tubular member in the form of solid wall tubing.
11. A method of installing tubing in subterranean portion of a
well, comprising the steps of a. providing a radially expandable
tubing assembly; b. moving the expandable tubing assembly to a
predetermined subterranean location in the well; and c. expanding
the tubing by moving a tubing expander axially through the tubing
assembly and radially expanding the tubing assembly by successively
contacting the interior wall of the tubing assembly with roller
sets with progressively larger effective cross sections.
12. The method according to claim 11, wherein the expander
comprises a plurality of sets of rollers movable between a radially
retracted position and a radially extended position and wherein
said method additionally comprises the step of extending the roller
sets before expanding the tubing assembly.
13. The method according to claim 11, wherein the step of expanding
the tubing assembly is performed by progressively larger sets of
rollers engaging the tubing assembly and rolling along the interior
surface thereof.
14. The method according to claim 6 wherein the step of providing a
radially expandable tubing assembly comprises providing a radially
expandable tubular member in the form of a well screen.
15. The method according to claim 6 wherein the step of providing a
radially expandable tubing assembly comprises providing a radially
expandable tubular member in the form of solid wall tubing.
16. A method of installing tubing in subterranean portion of a
well, comprising the steps of a. providing a radially expandable
tubing assembly, b. moving the expandable tubing assembly to a
predetermined subterranean location in the well; and c. moving a
tubing expander axially through the tubing assembly and radially
expanding the tubing assembly by contacting the interior wall of
the tubing with rollers which rollers are mounted to roll axially
along the interior wall.
17. The method according to claim 16, wherein the expander
comprises a plurality of sets of rollers movable between a radially
retracted position and a radially extended position and wherein
said method additionally comprises the step of extending the roller
sets before expanding the tubing assembly.
18. The method according to claim 16, wherein the step of expanding
the tubing assembly is performed by progressively larger sets of
rollers engaging the tubing assembly and rolling along the interior
surface thereof.
19. The method according to claim 16 wherein the step of providing
a radially expandable tubing assembly comprises providing a
radially expandable tubular member in the form of a well
screen.
20. The method according to claim 16 wherein the step of providing
a radially expandable tubing assembly comprises providing a
radially expandable tubular member in the form of solid wall
tubing
21. A well tubular member expander comprising: a. an elongated
body; b. a plurality of set of roller assemblies carried on the
body in longitudinally spaced relationship of a size to contact the
interior of the tubing member, at least two of the roller
assemblies having the rollers mounted at different radially outward
positions; and c. brackets supporting the roller assemblies to
rotate about a transverse axis.
22. The expander of claim 21 wherein the rollers are mounted in
pairs.
23. The expander of claim 21 wherein the brackets are radially
movable on the body to move between a radially extended position
and a radially retracted position.
Description
TECHNICAL FIELD
[0001] The present inventions relate to improvements in methods and
apparatus used to install tubing in a wellbore. More particularly
the present inventions relate to methods and apparatus for using
and installing radially expandable tubular members including
production liners and screens in subterranean well locations.
BACKGROUND OF THE INVENTIONS
[0002] Radially expandable tubular members are typically moved into
the well through the existing well tubing and then expanded
radially to a larger diameter. Radial enlargement is accomplished
by forcing an expanding die axially through the length of tubing.
An example of this prior art procedure is described in the United
States Patent to Lohbeck U.S. Pat. No. 5,366,012 issued Nov. 22,
1994 entitled Method of Completing an Uncased Section of a
Borehole. According to the Lohbeck patent, a tapered expansion
mandrel 15 connected to drill string 16 is forced through the
tubular member to deform it into larger diameter. The mandrel had a
largest diameter greater than the internal diameter of the tubular
member. In the United States Patent to Kinley U.S. Pat. No.
3,191,677 entitled Method and Apparatus For Setting Liners in
Tubing a pall shaped expander is used. In the United States Patent
to Kinlay et al. U.S. Pat. No. 3,785,193 issued Jan. 15, 1974
entitled Liner Expanding Apparatus, a tubing expander device is
disclosed which is positioned in the well in a retracted condition
and once in position is expanded to engage the tubing. Using
expansion mandrels and dies requires large axial forces and creates
large friction forces, which can cause damage to the tubular
member. Rotating mandrels with off set rollers thereon have been
attempted but require rotational power sources.
SUMMARY OF THE INVENTIONS
[0003] The present inventions contemplate an improved apparatus and
methods of expanding tubular members in wellbores that overcome the
problems associated with forcing expanding dies through lengths of
tubing and failures caused by the large frictional forces
encountered during expansion.
[0004] According to the present invention a plurality of sets of
rollers carried on a tool body are moved axially through the
tubular member. The roller sets define an effective cross section
that is larger than the cross section of the internal diameter of
the tubular member. The rollers rotate during the expansion process
by engaging and rolling along the interior wall of the tubular
member. The rolling action reduces friction and damage to the
tubular member caused thereby.
[0005] In one embodiment, the roller sets are arranged with
increasingly larger effective cross sections to progressively
expand the tubular member. In one embodiment the rollers are
retracted when the tool is moved into the well and extended to
engage and expand the tubular member.
BRIEF DESCRIPTION OF THE DRAWINGS
[0006] The accompanying drawings are incorporated into and form a
part of the specification to illustrate several examples of the
present inventions. These drawings together with the description
serve to explain the principals of the inventions. The drawings are
only for the purpose of illustrating preferred and alternative
examples of how the inventions can be made and used and are not to
be construed as limiting the inventions to only the illustrated and
described examples. The various advantages and features of the
present inventions will be apparent from a consideration of the
drawings in which:
[0007] FIG. 1 is a horizontal sectional view illustrating a
subterranean location in a wellbore, illustrating an expandable
tubular member being lowered into position;
[0008] FIG. 2 is a horizontal sectional view similar to FIG. 1
illustrating the tubing installed and after it is expanded in the
wellbore using the apparatus and methods of the present
inventions;
[0009] FIG. 3 is a side elevation view partially in section
illustrating an embodiment of the tubing expander apparatus of the
present inventions expanding a section of tubing;
[0010] FIG. 4 is a perspective view of the tool of FIG. 3;
[0011] FIG. 5 is a section view taken on line 5-5 of FIG. 3 looking
in the direction of the arrows;
[0012] FIG. 6 is a detail view illustrating an embodiment of roller
assembly configuration in the tool according to the present
inventions;
[0013] FIG. 7 is a schematic section view of the tool illustrating
the effective cross section formed by a set of rollers;
[0014] FIG. 8 is a schematic view similar to FIG. 7 illustrating
another roller configuration according to the present
inventions;
[0015] FIG. 9 is a schematic view similar to FIG. 7 illustrating
yet another roller configuration according to the present
inventions;
[0016] FIG. 10 is a schematic view similar to FIG. 7 illustrating a
further roller configuration according to the present
inventions;
[0017] FIG. 11 is a schematic elevation view of one configuration
for a set of rollers according to the present inventions;
[0018] FIG. 12 is a schematic elevation view of another
configuration for a set of rollers according to the present
inventions;
[0019] FIG. 13 is a partial cross sectional view illustrating a
tool embodiment according to the present inventions for retracting
and expanding the rollers with the rollers illustrated in the
expanded position;
[0020] FIG. 14 is a partial enlarged cross sectional view
illustrating the a roller assembly in the retracted position
according to the present inventions;
[0021] FIG. 15 is a cross sectional view similar to FIG. 13
illustrating the rollers in the expanded position;
[0022] FIG. 16 is a sectional view taken on line 16-16 of FIG. 15
looking in the direction of the arrows;
[0023] FIG. 17 is a partial cross sectional view illustrating
another tool embodiment according to the present inventions for
retracting and expanding the rollers with the rollers illustrated
in the expanded position; and
[0024] FIG. 18 is a partial cross sectional view illustrating a
further tool embodiment according to the present inventions for
retracting and expanding the rollers with the rollers illustrated
in the expanded position.
DETAILED DESCRIPTION
[0025] The present inventions are described by reference to
drawings showing one or more examples of how the inventions can be
made and used. In these drawings, reference characters are used
throughout the several views to indicate like or corresponding
parts.
[0026] In FIGS. 1 and 2, a subterranean portion of a well 10,
illustrated in section, has a cemented casing 12 terminating above
an open hole 14. Tubing connector 16 is illustrated at the casing
end for supporting a tubing assembly 20. A suitable collar 22 on
the assembly 20 is designed to mate with the connector 16. Although
one system is illustrated for supporting the tubing assembly there
are many other systems well known in the industry suitable for use
with these inventions such as tubing hangers and the like. In the
illustrated embodiment, the tubing assembly 20 comprises a tubular
member 24 coupled at 26 to a tubular screen or perforated liner
section. 28. The illustrated tubing assembly is merely illustrative
of many configurations of tubular members and the terms tubing
assembly when used herein are generic an not intended to be limited
to any particular assembly or types of tubular members and include
combinations or pipe, screen, liners and the like with cylindrical,
corrugated and other wall shapes.
[0027] In FIG. 1, tubing assembly 20 is illustrated being lowered
through the casing 12 into the well 10 on a drill string (not
shown). In FIG. 2 the tubing assembly is expanded to a full bore
diameter using an expander tool constructed in accordance with the
teachings of the present inventions.
[0028] In FIGS. 3-6 an embodiment of the expander tool 40 of the
present invention is illustrated. In FIG. 3, the tool 40 is
illustrated expanding a portion of tubing assembly 20. Tool 40 has
an elongated central body 42 connected to a drill string 44 by
threads or the like. A plurality of tubing expander elements are
longitudinally spaced on the body 42. These expander elements
include a guide head 50 and four sets of rollers 60, 70, 80, and
90. The tool 40 is designed to be forced down hole (in the
direction of arrow "d") by the weight of the drill string 44.
Alternatively, the expander could be pulled through the tubing
assembly in the uphole direction.
[0029] Guide head 50 is sized to fit in the tubing assembly 20. A
plurality of axially extending ribs 52 engages the internal surface
of the tubing assembly and centrally align the tool body 40 in the
tubing. The downhole facing ends 54 of these ribs 52 are tapered to
guide the head into the open end of the tubing. Since the roller
sets perform the expansion steps, head 50 is preferably sized to
act only as a guide with a small clearance with the internal
surface of the tubing assembly. However, an interference fit is
acceptable with some tubing deformation occurring before roller
engagement. Although one guide head is shown in front of a roller
set, it is envisioned that one or more guide heads could be used
behind one or more roller sets to shape the tubing cross section.
In addition, it is anticipated that a large number of smaller
closely spaced roller assemblies could be used shape the tubing
cross section after or during expansion.
[0030] Each of the roller sets 60, 70, 80 and 90 are typical in
construction. Each has a plurality of roller assemblies 100 mounted
to pivot about axis transverse to the length of the tubing assembly
20. In the illustrated embodiment, each roller assembly comprises a
shaft portion 102 and at least one endless tubing member contact
surface 104. In FIG. 6 the details of an embodiment of the roller
assembly 100 are shown. Roller assembly 100 has a central shaft
portion 102 and two spaced endless tubing contact surfaces 104.
Assembly 100 is symmetrical and designed to rotate about axis 106.
Axis 106 is aligned to be transverse to the tool and in a plane
perpendicular to the center line 112 of the tubing assembly 20. A
lubrication fitting 108 connected to internal lubrication
passageways 110 can be provided to supply lubrication to the
surface of shaft 102.
[0031] Contact surfaces 104 are profiled to match the expanded
internal surface of tubing assembly 20. This relationship is
illustrated with surface 104 conforming to a cylindrical surface
with a radius R measured from the tubing center line 112, with the
value of R being selected to match the expanded tubing member
internal diameter. Alternatively, the roller assembly could be made
with a single contact surface with a shaft on each side.
[0032] As can be seen in FIGS. 2, 3 and 5 each roller set contains
a plurality of roller assemblies 100 spaced circumferentially about
the tool body 42 with their out most surfaces arranged in a circle
with a radius R larger than the unexpanded tubing assembly. For
example, the roller set 60 could have a radius R an incremental
amount larger than the internal diameter of the tubing assembly to
be expanded. Roller sets 70, 80 and 90 could each have a radius R
slightly larger than the adjacent downhole roller set (to the left
in the drawings) and would progressively expand the tubing as the
tool 40 is forced through it by the string 44. The endless contact
surfaces 104 roll along the interior of the tubing preventing
damage caused by friction forces generated using conventional
expansion mandrels.
[0033] In FIG. 3, the typical mounting of one of the roller
assemblies 100 of roller set 90 is shown. Shaft portion 102 engages
a bearing portion 120 of a bracket 122. Lifting tool 40 causes
shaft 102 to retract out of contact with the tubing section and
down ramp 124 of bracket 122. Although, in this illustrated
embodiment all roller assemblies utilize the ramp mounting to allow
the roller to retract when the tool is lifted out of the well, it
is envisioned that in some well configurations only the largest
roller assembles would have the ability to retract.
[0034] In FIG. 7, a roller set is shown expanding a section of
tubing 20. As can be seen the expanded tubing 20 does not exactly
conform to a circle, in that, the roller surfaces 104 contacting
the interior of the tubing are spaced apart and are not a
continuous circle. Effective cross section refers to the cross
section shape of the interior of the tubing. The effective cross
section has an effective radius R, effective cross sectional area A
and effective circumference C. Unexpanded cylindrical tubing's
effective cross section is circular. The effective cross section of
expanded tubing is not necessarily completely circular.
[0035] As is illustrated in FIGS. 8-10, the number of roller
surfaces and their spacing has an effect on the shape of the
effective cross section of the tubing 20. In addition, the tubing
material, thickness and amount of expansion would change the cross
section shape. Preferably, the rollers are positioned so that their
highest contact point is in a circle in the plane P-P as shown in
FIG. 11. Plane P-P is transverse to the tool length and
perpendicular to the tubing axis. In FIG. 12 another configuration
is illustrated with the adjacent rollers 100 axially offset. In
this configuration the roller contact points do not conform to a
circle.
[0036] In the tool embodiment 140 illustrated in FIGS. 13-16, the
roller, assemblies can be retracted during run in and extended for
the expansion step. In FIG. 13 tubing, assembly 20 is being
expanded by tool assembly 140 as it is forced (pushed in downhole
direction of arrow d by drill string 44) through the tubing from
right to left in the figure. When using the retractable tool
assembly 140 the drill string could also be connected to the tool
140 at the guide head 150 to force or pull the tool through the
tubing assembly 20 in an up hole direction.
[0037] Tool assembly 140 (like tool 40) has a body 142 with a guide
head 150, and a plurality of roller sets 160, 170 (not shown), 180,
and 190 carried thereon. The guide head and roller sets on tool
assembly 140 function in the same manner as described with regard
to tool 40.
[0038] Tool 140 has cylindrical outer portion 146 defining a
chamber 148 in which is mounted the means for extending and
retracting the roller assemblies. Cylindrical portion 146 is
illustrated as a single piece but it is fabricated (as is well
known in the industry) in multiple pieces connected together by
threads, pins, welding and the like. These connections are not
shown for simplicity purposes.
[0039] A chamber 156 and piston 158 in portion 146 define a
variable volume in fluid communication with the drill string
through port 162. By varying the fluid pressure in drill string 44,
piston 158 can be reciprocated axially in chamber 156. In FIG. 13
pressure has been raised in chamber 156 causing piston 158 to move
axially in the direction of arrow d against stop 164.
[0040] An actuating rod 172 is mounted to axially reciprocate in a
second chamber 174 in portion 146. Rod 172 is connected to and is
moved axially by piston 158. When fluid pressure in chamber 156
moves piston 158 against stop 164, coil spring 174 is compressed
against wall 176 and rod 172 is moved into the chamber 156. When
pressure in chamber 156 is reduced spring 174 moves piston 158
toward the drill string 44 while moving rod 172 in the same
direction. Rod 172 has a plurality of cam surfaces 178 which engage
and move the roller assemblies into and out of the retracted and
extended positions.
[0041] In FIGS. 13-16, the interaction between the cam surface 178
on rod 172 and roller assemblies will be described. Roller assembly
200 is mounted on a bracket 222 similar to the non-retractable
embodiment but with the roller shaft portion supported from a
surface 224 which may be without the ramp, as illustrated, or may
be ramped (see ramp surface 124 in FIG. 3). Cylindrical portion 146
has a plurality of axially extending slots 182 in its wall for
receiving roller brackets 222. Brackets 222 are designed to be
movable with respect to portion 146 in and out of the slots 182. A
flange 184 (See FIG. 16) is larger in cross section than slot 182
and is connected to bracket 222 to restrict outward movement of the
bracket 222.
[0042] In FIG. 14 the roller assembly 200 is shown in the retracted
position with the cam surface 178 is axially spaced from the flange
184. When piston 158 moves the rod 178 from the FIG. 14 retracted
position to the FIG. 15 extended position, cam surface 178 engages
the flange 184 forcing the roller assembly 200 outward to the
extended position. A leaf spring 186 urges the bracket 222 toward
the retracted position and when the rod 172 is moved out of contact
with the flange 184, the roller assembly will retract.
[0043] In FIG. 17 another roller assembly 300 embodiment is
illustrated in solid line extended and in dotted lines retracted.
Roller bracket 322 is pivoted from tool body 342 on shaft 344. The
roller assembly rotates in the directions of arrow E about axis 344
from the retracted position shown in dotted lines to the extended
position shown in solid lines. A slot 346 can be formed in body 342
to allow the bracket to pivot into the body 342. A stop similar to
stop 164 can be provided to limit outward rotation. An actuating
rod 372 is moved axially in the direction of arrow d in body 342 by
the previously described piston chamber assembly to engage the
bracket with cam surface 378 to extend the bracket 322. When the
rod 372 is retracted a suitable spring 348 causes the bracket to
rotate to the retracted position.
[0044] In FIG. 18 a further embodiment of a retractable roller
assembly 400 is illustrated in solid lines in the retracted
position and in dotted lines in the extended position. In this
embodiment the bracket 422 is fixed to the exterior of the body
442. Bracket 422 has an outwardly inclined ramp surface 424
supporting roller shaft 402. As the tool body 442 is moved down
holed (arrow d) contact between the roller and the tubing assembly
will tend to cause the roller shaft 402 to climb the ramp 424 and
move to the extended position shown in dotted lines. However,
during movement of the tool into position, a releasable latch shown
here in the form of a pin 444 holding the shaft 402 in the
retracted position (solid lines) at the bottom of the ramp 424. Pin
444 is biased by compression spring 446 to move in the direction of
arrow X out of the path of shaft 402. Once tool body 442 is in
position in the well, the actuating rod 472 is moved axially from
under pin 444 allowing spring 446 to retract the pin down out of
contact with the shaft 402. With pin 444 retracted, downward
movement (direction of arrow d) of the tool will allow shaft 402 to
climb ramp 424 to the extended position to perform the tubing
assembly expanding step. Once expansion is completed lifting up on
the tool body 442 will cause the roller to move down ramp 424 to
the retracted position. In addition, the actuating shaft 472 can be
moved downward by a cylinder-piston assembly (not shown) until cam
surface 478 engages pin 444 and returns it to the locking position
shown in FIG. 18.
[0045] According to the present inventions the wellbore is
completed through a series of steps. First, a tubing assembly is
provided comprising at least in part an expandable tubular member.
The tubular assembly can be a continuous tubular member, or a liner
with drainage openings and/or screen. Either before or after any
required perforation steps, the tubing assembly is positioned in
the well where it is to be expanded. Once in the desired position,
the tubing assembly is radially expanded by engaging it with an
expander tool having sets of rollers positioned on the tool to
progressively expand the tubing assembly as the tool is moved
through the tubular assembly. In the extendable tool embodiment,
the tool is moved to a position adjacent the tubular member in the
retracted condition and expands the tubular member while in the
radially extended condition. Thereafter the tool can be retracted
and moved out of the well.
[0046] The embodiments shown and described above are only
exemplary. Many details are often found in the art such as:
actuator pistons and cylinders, expandable tubing, expandable
liners, and expandable screens and the like. Therefore, many such
details are neither shown nor described. It is not claimed that all
of the detail parts, elements, or steps described and shown were
invented herein. It is also envisioned that a conventional chemical
powered setting tool or the like could operate the extendable tool.
Even though numerous characteristics and advantages of the present
inventions have been set forth in the foregoing description,
together with details of the structure and function of the
inventions, the disclosure is illustrative only, and changes may be
made in the detail, especially in matters of shape, size and
arrangement of the parts within the principles of the inventions to
the full extent indicated by the broad general meaning of the terms
used the attached claims.
[0047] The restrictive description and drawings of the specific
examples above do not point out what an infringement of this patent
would be, but are to provide at least one explanation of how to
make and use the inventions. The limits of the inventions and the
bounds of the patent protection are measured by and defined in the
following claims:
* * * * *