U.S. patent application number 12/899888 was filed with the patent office on 2011-02-03 for downhole fluid injection dispersion device.
Invention is credited to Carlos A. Palacios, Robert Sunyovszky.
Application Number | 20110024107 12/899888 |
Document ID | / |
Family ID | 42130024 |
Filed Date | 2011-02-03 |
United States Patent
Application |
20110024107 |
Kind Code |
A1 |
Sunyovszky; Robert ; et
al. |
February 3, 2011 |
DOWNHOLE FLUID INJECTION DISPERSION DEVICE
Abstract
The invention described herein is directed to a downhole fluid
injection dispersion device. This invention may be employed to
radially disperse fluid injected downhole in a well bore. This
invention comprises a body comprising an inlet port and at least
two radial outlet ports.
Inventors: |
Sunyovszky; Robert;
(Lecheria, VE) ; Palacios; Carlos A.; (Lecheria,
VE) |
Correspondence
Address: |
DUANE MORRIS LLP - Houston
1330 POST OAK BLVD., SUITE 800
HOUSTON
TX
77056
US
|
Family ID: |
42130024 |
Appl. No.: |
12/899888 |
Filed: |
October 7, 2010 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
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12261247 |
Oct 30, 2008 |
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12899888 |
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Current U.S.
Class: |
166/222 |
Current CPC
Class: |
E21B 37/06 20130101 |
Class at
Publication: |
166/222 |
International
Class: |
E21B 43/00 20060101
E21B043/00 |
Claims
1. A downhole fluid injection dispersion device, comprising: a. a
body comprising: a first outer surface comprising an inlet port,
ii. a second outer surface opposite the first outer surface, iii.
an outer longitudinal surface between the first outer surface and
second outer surface; iv. an inner longitudinal surface between the
first outer surface and second outer surface defining a central
longitudinal channel; and v. at least two radial outlet ports
mounted on opposite sides of the inner longitudinal surface, each
of said outlet ports being in fluid communication with the inlet
port; b. a first tubing member extending out of the central
longitudinal channel in a first direction; and c. a second tubing
member extending out of the central longitudinal channel in a
second direction opposite to the first direction.
2. The device of claim 1, further comprising a check valve
installed in the inlet port and positioned to allow fluid flow into
the inlet port and body and to prevent fluid flow out of the inlet
port and body.
3. The device of claim 1, wherein the body comprises at least four
radial outlet ports, each of which is mounted on a different
quadrant of the inner longitudinal surface and is in fluid
communication with the inlet port.
4. The device of claim 1, further comprising a nozzle connected to
each radial outlet port.
Description
PRIORITY INFORMATION
[0001] This application is a divisional application claiming
priority from U.S. patent application Ser. No. 12/261247 filed on
Oct. 30, 2008.
FIELD OF THE INVENTION
[0002] The invention described herein is directed to a downhole
fluid injection dispersion device. This invention may be employed
to radially disperse fluid injected downhole in a well bore. This
invention comprises a body comprising an inlet port and at least
two radial outlet ports.
BACKGROUND OF THE INVENTION
[0003] In hydrocarbon production chemicals are introduced into a
well through a capillary tube for mitigating problems, such as
scaling, corrosion, or the deposition of organic products.
Chemicals are also introduced in this manner to treat well fluids,
reduce viscosity, and/or demulsify.
[0004] In prior art downhole chemical injection methods using a
single capillary tube, the injected chemicals are not widely
dispersed in the radial dimension, resulting in limited mixing of
the chemicals and well fluids. This limited mixing can result in
chemicals channeling on one side of an electrical submersible pump
("ESP") located downhole. Such channeling leaves a side or portion
of the ESP untreated. Additionally, capillary tubes used with prior
art downhole chemical injection devices have been subject to
plugging, resulting in a lack of chemical dispersion downhole to
protect the ESP.
[0005] Another prior art chemical injection method involves
injecting chemicals from the well surface into the well annulus.
This method involves the chemicals flowing downward as a
countercurrent to the gases that are liberated at the pump
separator. In this method, the chemicals flow downhole to mix with
production fluids and enter the intake or suction of the ESP. Once
the mixture of production fluids and chemicals reach the ESP
intake, they are discharged from the ESP, rather than flowing down
past the ESP motor. Thus, components below the ESP intake, such as
the motor, do not receive the intended treatment benefit of the
injected chemicals. Downhole motors are especially susceptible to
corrosion due to their high operating temperatures.
[0006] One or more embodiments of the invention described herein
provide improved dispersion of fluids injected downhole and
protection of the capillary tube against plugging, for various
forms of oil production systems.
DESCRIPTION OF THE FIGURES
[0007] FIG. 1 is a cross sectional view of a third preferred
embodiment of the invention.
[0008] FIG. 2 is a cross sectional view of a second preferred
embodiment of the invention.
[0009] FIG. 3 is a cross sectional view of a first preferred
embodiment of the invention.
[0010] FIG. 4 is a side view of a nozzle for use with various
embodiments of the invention.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0011] A first preferred embodiment of the invention is shown in
FIG. 3. In a first preferred embodiment, the invention comprises a
body 10 comprising a first body region 12, a second body region 14
opposite the first body region, an outer longitudinal surface 16
positioned between the first and second body regions and comprising
an indented surface region 20 between the first and second body
regions, a first ledge 22, and an inlet port 24 in the first ledge;
and at least two radial outlet ports 26 mounted on opposite sides
of the first body region
[0012] This first embodiment further comprises a first mechanical
coupling 34 connected to the first body region, and a second
mechanical coupling 36 connected to the second body region. In a
preferred embodiment the second mechanical coupling comprises
female pipe threads. In a preferred embodiment the first mechanical
coupling comprises male pipe threads.
[0013] This first embodiment farther comprises an internal flow
path 38 in fluid communication with the inlet port, said internal
flow path comprising a first segment 40 extending longitudinally
through the body, and at least two radial segments 42, each of
which is in fluid communication with one of the radial outlet
ports. In a preferred embodiment radial segments extend in an
orientation that is substantially perpendicular to the orientation
of the first segment.
[0014] Another preferred embodiment comprises the limitations of
the first embodiment plus a nozzle 27 connected to each radial
outlet port.
[0015] Another preferred embodiment comprises the limitations of
the first embodiment plus a check valve 46 installed in the inlet
port and positioned to allow fluid flow into the inlet port and
body, and to prevent fluid flow out of the inlet port and body.
[0016] A second preferred embodiment of the invention is shown in
FIG. 2. In a second preferred embodiment, the invention comprises a
body 10 comprising a first outer surface 11 comprising an inlet
port 24, a second outer surface 13 opposite the first outer
surface, an outer longitudinal surface 16 between the first outer
surface and second outer surface, an inner longitudinal surface 18
between the first outer surface and second outer surface defining a
central longitudinal channel, at least two radial outlet ports 26
mounted on opposite sides of the outer longitudinal surface, each
of said outlet ports being in fluid communication with the inlet
port.
[0017] This second embodiment further comprises a first tubing
member 33 extending out of the central longitudinal channel in a
first direction and a second tubing member 35 extending out of the
central longitudinal channel in a second direction opposite to the
first direction.
[0018] Another preferred embodiment comprises the limitations of
the second embodiment plus a check valve 46 installed in the inlet
port and positioned to allow fluid flow into the inlet port and
body, and to prevent fluid flow out of the inlet port and body.
[0019] In another preferred embodiment, the body comprises at least
four radial outlet ports 26, each of which is mounted on a
different quadrant of the inner longitudinal surface and is in
fluid communication with the inlet port.
[0020] Another preferred embodiment comprises the limitations of
the second embodiment plus a nozzle 27 connected to each radial
outlet port.
[0021] A third preferred embodiment of the invention is shown in
FIG. 1. In a third preferred embodiment, the invention comprises a
body 10 comprising a first outer surface 11 comprising an inlet
port 24, a second outer surface 13 opposite the first outer
surface, an outer longitudinal surface 16 between the first outer
surface and second outer surface; an inner longitudinal surface 18
between the first outer surface and second outer surface defining a
central longitudinal channel, and at least two radial outlet ports
26 mounted on opposite sides of the inner longitudinal surface,
each of said outlet ports being in fluid communication with the
inlet port.
[0022] This third embodiment further comprises a first tubing
member 33 extending out of the central longitudinal channel in a
first direction and a second tubing member 35 extending out of the
central longitudinal channel in a second direction opposite to the
first direction.
[0023] Another preferred embodiment comprises the limitations of
the third embodiment plus a check valve 46 installed in the inlet
port and positioned to allow fluid flow into the inlet port and
body, and to prevent fluid flow out of the inlet port and body.
[0024] In another preferred embodiment, the body comprises at least
four radial outlet ports 26, each of which is mounted on a
different quadrant of the inner longitudinal surface and is in
fluid communication with the inlet port.
[0025] Another preferred embodiment comprises the limitations of
the third embodiment plus a nozzle 27 connected to each radial
outlet port.
[0026] In a fourth preferred embodiment, the invention comprises a
body 10 comprising a first outer surface 11 comprising an inlet
port 24, a second outer surface 13 opposite the first outer
surface, a longitudinal surface 16 between the first outer surface
and second outer surface,
[0027] The fourth preferred embodiment further comprises at least
two radial outlet ports 26 mounted on opposite sides of the
longitudinal surface, each of said outlet ports being in fluid
communication with the inlet port
[0028] Another preferred embodiment comprises the limitations of
the fourth embodiment plus a nozzle 27 connected to each radial
outlet port.
[0029] The foregoing disclosure and description of the inventions
are illustrative and explanatory. Various changes in the size,
shape, and materials, as well as in the details of the illustrative
construction may be made without departing from the spirit of the
invention.
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