Multi-purpose injection and production well system

Information

  • Patent Grant
  • 6481503
  • Patent Number
    6,481,503
  • Date Filed
    Monday, January 8, 2001
    23 years ago
  • Date Issued
    Tuesday, November 19, 2002
    22 years ago
Abstract
A method and apparatus for simultaneously producing fluid from one or more zones of an oil or gas well, while injecting fluid into one or more other zones of the well, and for converting a depleted production zone into an injection zone, by remotely shifting sleeves in the apparatus to selectively align inlet and outlet ports with production and injection flow paths, respectively. A production string is provided within a completion string; the completion string has inlet and outlet ports to the well bore. One or more production sleeves have production conduits which can be selectively aligned with inlet ports by shifting the production sleeves. One or more injection sleeves have injection conduits which can be selectively aligned with outlet ports by shifting the injection sleeves.
Description




CROSS REFERENCE TO RELATED APPLICATIONS




Not Applicable




STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT




Not Applicable




BACKGROUND OF THE INVENTION




1. Field of the Invention




This invention is in the field of equipment used in the production of fluids from, and injection of fluids into, oil and gas wells having multiple zones.




2. Background Art




Many oil or gas wells extend through multiple formations, resulting in the establishment of multiple zones at different depths in the well. It may be desirable to produce formation fluids such as gas or oil from different zones at different times, and to inject fluids such as water into different zones at different times, for the purpose of ultimately obtaining the maximum production from the well. Further, it may be desirable to produce formation fluids from one or more zones, while simultaneously injecting fluids into one or more other zones. Finally, it may be desirable to convert a particular zone from a production zone into an injection zone, after the zone is depleted.




Known equipment for these purposes usually requires pulling the completion assembly from the well, and changing or reconfiguring the equipment in the assembly, when it is desired to commence or cease production or injection in a particular zone. Further, known equipment is generally limited to the production of fluid or the injection of fluid at any given time, with simultaneous production and injection not being possible, or at least difficult. More specifically, known equipment is not capable of the simultaneous production from multiple zones and injection into multiple zones.




BRIEF SUMMARY OF THE INVENTION




The present invention provides a method and apparatus for selectively injecting into a given zone or multiple zones, or producing from a given zone or multiple zones, without pulling the equipment from the well. A completion unit is positioned next to each zone of the formation, with zones being segregated by packers. An injection sleeve and a production sleeve are provided in each completion unit. Each sleeve essentially bridges between the completion string and the production string, which is within the completion string. Each sleeve is shifted, such as by hydraulic, electrical, or mechanical operation, to selectively align a conduit through the sleeve with its associated port in the wall of the completion string. When aligned with the inlet port, the conduit in the production sleeve conducts formation fluid into a production fluid path in the production string. When aligned with the outlet port, the conduit in the injection sleeve conducts injection fluid from an injection fluid path into the formation. Regardless of sleeve position, both injection flow and production flow can be maintained through the completion unit to other completion units above or below.




By selectively shifting the sleeves, selected zones can be isolated, produced from, or injected into, as desired. One or more lower zones can be injected into while one or more upper zones are produced from, or vice versa. If desired, alternating zones can even be simultaneously produced from and injected into.











The novel features of this invention, as well as the invention itself, will be best understood from the attached drawings, taken along with the following description, in which similar reference characters refer to similar parts, and in which:




BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS





FIG. 1

is a longitudinal section of a production unit as implemented in the present invention, with production flow from the zone isolated;





FIG. 2

is a transverse section of a production sleeve as used in the production unit of

FIG. 1

;





FIG. 3

is a longitudinal section of the production unit of

FIG. 1

, with production flow from the zone established;





FIG. 4

is a longitudinal section of an injection unit as implemented in the present invention, with injection flow into the zone isolated;





FIG. 5

is a transverse section of an injection sleeve as used in the injection unit of

FIG. 4

;





FIG. 6

is a longitudinal section of the injection unit of

FIG. 4

, with injection flow into the zone established;





FIG. 7

is a longitudinal section of a completion unit, showing production flow from the zone established, and showing an alternative configuration of the completion and production strings;





FIG. 8

is a longitudinal section of the completion unit of

FIG. 7

, showing production flow from the zone and injection flow into the zone both isolated; and





FIG. 9

is a longitudinal section of the completion unit of

FIG. 7

, showing injection flow into the zone established.











DETAILED DESCRIPTION OF THE INVENTION




As shown in

FIG. 1

, a production unit


10


used as part of the present invention includes a completion string


12


of tubing or piping, a production string


14


of tubing or piping, one or more centralizing rings


16


, and a longitudinally shiftable production sleeve


18


. This production unit can be placed in a well bore, aligned with a selected zone of the downhole formation. The completion string


12


shown is flush joint piping, and the production string


14


can be flush joint piping. Other types of piping or tubing can also be used. The production string


14


is substantially coaxially located within the completion string


12


, centralized therein by the centralizing rings


16


. An upper end


19


and a lower end


21


of the production sleeve


18


are configured to slidably mount within production string fittings


23


, for shifting of the production sleeve


18


by means of longitudinal movement relative to the completion string


12


. It will be seen that shifting of the production sleeve


18


could be rotational relative to the completion string


12


, rather than longitudinal, if desired.





FIG. 2

shows a transverse section of the production sleeve


18


. One or more production fluid conduits


22


are arranged more or less radially from the center of the production sleeve


18


to its outer periphery. One or more injection fluid bypass channels


24


pass longitudinally through the production sleeve


18


, to ensure that injection fluid can bypass the production sleeve from an upper annulus to a lower annulus. A production fluid flow path


28


passes longitudinally through the production sleeve


18


, ensuring the production fluid from a lower zone can pass to an upper zone. The production fluid conduits


22


are also in fluid flow communication with the production fluid flow path


28


.





FIG. 1

shows only one of the production fluid conduits


22


, and only one of the bypass channels


24


. However, it can be seen that, regardless of the position of the production sleeve


18


, an injection fluid flow path exists through the production sleeve


18


as indicated by the arrow labeled IF. Further, the injection fluid flow path continues through bypass channels


26


in the centralizing rings


16


. This allows injection fluid pumped downhole in the annulus between the completion string


12


and the production string


14


to flow completely through the production unit


10


from an upper zone to a lower zone, regardless of the position of the production sleeve


18


.




It also can be seen that, regardless of the position of the production sleeve


18


, production fluid can flow through the production fluid flow path


28


in the production sleeve


18


as indicated by the arrow labeled PF. Further, production fluid can flow through the center of the centralizing rings


16


, in the production fluid flow path


28


in the production string


14


. This allows production fluid to flow completely through the production unit


10


from a lower zone to an upper zone, regardless of the position of the production sleeve


18


.




Shifting of the production sleeve


18


could be accomplished by several different means, such as hydraulically, mechanically, or electrically, or a combination thereof.

FIG. 1

shows one embodiment of a hydraulic shifting means, including an upper hydraulic duct


30


, a lower hydraulic duct


32


, and a two directional hydraulic chamber


34


. A shoulder on the production sleeve


18


can be positioned in the hydraulic chamber


34


. When the upper duct


30


is pressurized, the production sleeve


18


is shifted downwardly, or to the right in the figure. When the lower duct


32


is pressurized, the production sleeve


18


is shifted upwardly, or to the left in the figure. A similar hydraulic assembly could be used to rotationally shift the production sleeve


18


, if preferred. Further, an electrical solenoid mechanism could accomplish either longitudinal or rotational shifting, if preferred. Still further, other known shifting mechanisms could be used to shift the production sleeve


18


.




A formation fluid inlet port


20


is formed through the wall of the completion string


12


. The production fluid conduit


22


in the production sleeve


18


does not align with the inlet port


20


, when the production sleeve


18


is in the upper position shown in FIG.


1


. This isolates the inlet port


20


, preventing flow of formation fluid through the inlet port


20


, through the production fluid conduit


22


, and into the production fluid flow path


28


.

FIG. 3

illustrates that the production sleeve


18


can be selectively shifted downwardly when desired, to align the production fluid conduit


22


with the inlet port


20


. This establishes flow of formation fluid through the inlet port


20


, through the production fluid conduit


22


, and into the production fluid flow path


28


.




As shown in

FIG. 4

, an injection unit


40


used as part of the present invention includes the completion string


12


, the production string


14


, one or more centralizing rings


16


, and a longitudinally shiftable injection sleeve


42


. This injection unit also can be placed in a well bore, aligned with a selected zone of the downhole formation. As will be seen, the injection unit


40


can be associated with a production unit


10


for a particular zone of the formation, to facilitate selective production from, or injection into, the zone. An upper end


43


and a lower end


45


of the injection sleeve


42


are configured to slidably mount within production string fittings


23


, for shifting of the injection sleeve


42


by means of longitudinal movement relative to the completion string


12


. It will be seen that shifting of the injection sleeve


42


could be rotational relative to the completion string


12


, rather than longitudinal, if desired.





FIG. 5

shows a transverse section of the injection sleeve


42


. One or more injection fluid conduits


46


are arranged at several locations, connecting the upper side of the injection sleeve


42


to its outer periphery. One or more injection fluid bypass channels


56


pass longitudinally through the injection sleeve


42


, to ensure that injection fluid can bypass the injection sleeve from an upper annulus to a lower annulus. A production fluid flow path


28


passes longitudinally through the injection sleeve


42


, ensuring the production fluid from a lower zone can pass to an upper zone.





FIG. 4

shows only one of the injection fluid conduits


46


, and only one of the bypass channels


56


. However, it can be seen that, regardless of the position of the injection sleeve


42


, an injection fluid flow path exists through the injection sleeve


42


as indicated by the arrow labeled IF. Further, the injection fluid flow path continues through bypass channels


26


in the centralizing rings


16


. This allows injection fluid pumped downhole in the annulus between the completion string


12


and the production string


14


to flow completely through the injection unit


40


from an upper zone to a lower zone, regardless of the position of the injection sleeve


42


.




It also can be seen that, regardless of the position of the injection sleeve


42


, production fluid can flow through the production fluid flow path


28


in the injection sleeve


42


as indicated by the arrow labeled PF. Further, production fluid can flow through the center of the centralizing rings


16


, in the production fluid flow path


28


in the production string


14


. This allows production fluid to flow completely through the injection unit


40


from a lower zone to an upper zone, regardless of the position of the injection sleeve


42


.




Shifting of the injection sleeve


42


could be accomplished by several different means, such as hydraulically, mechanically, or electrically, or a combination thereof.

FIG. 4

shows one embodiment of a hydraulic shifting means, including an upper hydraulic duct


50


, a lower hydraulic duct


52


, and a two directional hydraulic chamber


54


. A shoulder on the injection sleeve


42


can be positioned in the hydraulic chamber


54


. When the upper duct


50


is pressurized, the injection sleeve


42


is shifted downwardly, or to the right in the figure. When the lower duct


52


is pressurized, the injection sleeve


42


is shifted upwardly, or to the left in the figure. A similar hydraulic assembly could be used to rotationally shift the injection sleeve


42


, if preferred. Further, an electrical solenoid mechanism could accomplish either longitudinal or rotational shifting, if preferred. Still further, other known shifting mechanisms could be used to shift the injection sleeve


42


.




An injection fluid outlet port


44


is formed through the wall of the completion string


12


. The injection fluid conduit


46


in the injection sleeve


42


does not align with the outlet port


44


, when the injection sleeve


42


is in the upper position shown in FIG.


4


. This isolates the outlet port


44


, preventing flow of injection fluid through the injection fluid conduit


46


, through the outlet port


44


, and into the formation.

FIG. 6

illustrates that the injection sleeve


42


can be selectively shifted downwardly when desired, to align the injection fluid conduit


46


with the outlet port


44


. This establishes flow of injection fluid through the injection fluid conduit


46


, through the outlet port


44


, and into the formation.





FIGS. 7

,


8


, and


9


illustrate the pairing of a production unit


10


with an injection unit


40


to form a completion unit, which can be placed downhole in a well bore, aligned with a selected zone of the formation. Packers


58


can be used to isolate adjacent zones.

FIGS. 7

,


8


, and


9


also illustrate a variation of the configuration of the completion string and the production string, when it is desired to pump injection fluid into the annulus surrounding the completion string, rather than pumping injection fluid into an annulus between the completion string and the production string, as in the embodiments shown in

FIGS. 1

,


3


,


4


, and


6


. In either embodiment, however, production fluid flow and injection fluid flow can be controlled as shown in

FIGS. 7

,


8


, and


9


.





FIG. 7

shows the production sleeve


18


in its lower position, and the injection sleeve


42


in its upper position. This establishes flow of formation fluid from the zone into the production fluid flow path


28


, while preventing flow of injection fluid into the zone.

FIG. 8

shows the production sleeve


18


in its upper position, and the injection sleeve


42


in its upper position. This prevents flow of formation fluid from the zone into the production fluid flow path


28


, while also preventing flow of injection fluid into the zone.

FIG. 9

shows the production sleeve


18


in its upper position, and the injection sleeve


42


in its lower position. This prevents flow of formation fluid from the zone into the production fluid flow path


28


, while establishing flow of injection fluid into the zone.




It can be seen that, by selective shifting of the production sleeves


18


and the injection sleeves


42


in multiple zones, one or more zones can produce formation fluid, simultaneous with the injection of fluid into one or more other zones.




While the particular invention as herein shown and disclosed in detail is fully capable of obtaining the objects and providing the advantages hereinbefore stated, it is to be understood that this disclosure is merely illustrative of the presently preferred embodiments of the invention and that no limitations are intended other than as described in the appended claims.



Claims
  • 1. A system for injecting fluid into, and producing fluid from, multiple zones in a well bore, comprising:a tubular completion string, said completion string having a production fluid inlet port and an injection fluid outlet port; a production fluid flow path within said completion string; an injection fluid flow path within said completion string; a production fluid bypass channel connecting a portion of said injection fluid flow path above said production fluid inlet port to a portion of said injection fluid flow path below said production fluid inlet port; an injection fluid bypass channel connecting a portion of said injection fluid flow path above said injection fluid outlet port to a portion of said injection fluid flow path below said injection fluid outlet port; a production fluid conduit, said production fluid conduit being adapted to shift relative to said completion string to selectively conduct production fluid from said production fluid inlet port to said production fluid flow path; and an injection fluid conduit, said injection fluid conduit being adapted to shift relative to said completion string to selectively conduct injection fluid from said injection fluid flow path to said injection fluid outlet port.
  • 2. The injection and production system recited in claim 1, wherein said production fluid conduit is slidably mounted in said completion string to selectively conduct production fluid from said production fluid inlet port to said production fluid flow path, by sliding longitudinally relative to said completion string.
  • 3. The injection and production system recited in claim 1, wherein said injection fluid conduit is slidably mounted in said completion string to selectively conduct injection fluid from said injection fluid flow path to said injection fluid outlet port, by sliding longitudinally relative to said completion string.
  • 4. The injection and production system recited in claim 1, further comprising:a first packer surrounding said completion string above said production fluid inlet port and said injection fluid outlet port; and a second packer surrounding said completion string below said production fluid inlet port and said injection fluid outlet port.
  • 5. The injection and production system recited in claim 1, further comprising:a plurality of said production fluid conduits; and a plurality of said injection fluid conduits.
  • 6. The injection and production system recited in claim 5, wherein each of said production fluid conduits is associated with an adjacent said injection fluid conduit to comprise an associated pair of fluid conduits, and further comprising a packer surrounding said completion string between adjacent said associated pairs of said production and injection fluid conduits.
  • 7. The injection and production system recited in claim 1, further comprising a tubular production string within said completion string, wherein:said production fluid flow path passes through said production string; and said production fluid conduit is adapted to shift relative to said completion string to selectively conduct production fluid from said production fluid inlet port to said production string.
  • 8. The injection and production system recited in claim 1, further comprising a tubular production string within said completion string, wherein:said injection fluid flow path passes through a space between said production string and said completion string; and said injection fluid conduit is adapted to shift relative to said completion string to selectively conduct injection fluid from said space between said production and completion strings to said injection fluid outlet port.
  • 9. The injection and production system recited in claim 1, further comprising a tubular production string within said completion string, wherein:said injection fluid flow path includes a space between said production string and said completion string; said production fluid conduit passes through said space between said production string and said completion string; and said production fluid bypass channel bypasses said production fluid conduit from a portion of said space above said production fluid conduit to a portion of said space below said production fluid conduit.
  • 10. The injection and production system recited in claim 1, further comprising a tubular production string within said completion string, wherein:said injection fluid flow path includes a space between said production string and said completion string; said injection fluid conduit passes through said space between said production string and said completion string; and said injection fluid bypass channel bypasses said injection fluid conduit from a portion of said space above said injection fluid conduit to a portion of said space below said injection fluid conduit.
  • 11. The injection and production system recited in claim 1, wherein said production fluid conduit is adapted for shifting under remote control to selectively conduct production fluid from said production fluid inlet port to said production fluid flow path.
  • 12. The injection and production system recited in claim 11, further comprising a hydraulic actuator adapted to remotely shift said production fluid conduit.
  • 13. The injection and production system recited in claim 1, wherein said injection fluid conduit is adapted for shifting under remote control to selectively conduct injection fluid from said injection fluid flow path to said injection fluid outlet port.
  • 14. The injection and production system recited in claim 13, further comprising a hydraulic actuator adapted to remotely shift said injection fluid conduit.
  • 15. A system for injecting fluid into, and producing fluid from, multiple zones in a well bore, comprising:a tubular completion string, said completion string having a production fluid inlet port and an injection fluid outlet port; a production fluid flow path within said completion string; an injection fluid flow path within said completion string; a production sleeve mounted within said completion string; an injection sleeve mounted within said completion string; a production sleeve bypass channel connecting a portion of said injection fluid flow path above said production sleeve to a portion of said injection fluid flow path below said production sleeve; an injection sleeve bypass channel connecting a portion of said injection fluid flow path above said injection sleeve to a portion of said injection fluid flow path below said injection sleeve; a production fluid conduit in said production sleeve, said production sleeve being adapted to shift relative to said completion string to selectively conduct production fluid from said production fluid inlet port to said production fluid flow path via said production fluid conduit; and an injection fluid conduit in said injection sleeve, said injection sleeve being adapted to shift relative to said completion string to selectively conduct injection fluid from said injection fluid flow path to said injection fluid outlet port via said injection fluid conduit.
  • 16. The injection and production system recited in claim 15, wherein said production sleeve is slidably mounted in said completion string to selectively conduct production fluid from said production fluid inlet port to said production fluid flow path, via said production fluid conduit, by sliding longitudinally relative to said completion string.
  • 17. The injection and production system recited in claim 15, wherein said injection sleeve is slidably mounted in said completion string to selectively conduct injection fluid from said injection fluid flow path to said injection fluid outlet port, via said injection fluid conduit, by sliding longitudinally relative to said completion string.
  • 18. The injection and production system recited in claim 15, further comprising:a first packer surrounding said completion string above said production and injection sleeves; and a second packer surrounding said completion string below said production and injection sleeves.
  • 19. The injection and production system recited in claim 15, further comprising:a plurality of said production sleeves; and a plurality of said injection sleeves.
  • 20. The injection and production system recited in claim 19, wherein each of said production sleeves is associated with an adjacent said injection sleeve to comprise an associated pair of sleeves, and further comprising a packer surrounding said completion string between adjacent said associated pairs of said production and injection sleeves.
  • 21. The injection and production system recited in claim 15, further comprising a tubular production string within said completion string, wherein:said production fluid flow path passes through said production string; and said production sleeve is adapted to shift relative to said completion string to selectively conduct production fluid from said production fluid inlet port to said production string, via said production fluid conduit.
  • 22. The injection and production system recited in claim 15, further comprising a tubular production string within said completion string, wherein:said injection fluid flow path passes through a space between said production string and said completion string; and said injection sleeve is adapted to shift relative to said completion string to selectively conduct injection fluid from said space between said production and completion strings to said injection fluid outlet port, via said injection fluid conduit.
  • 23. The injection and production system recited in claim 15, further comprising a tubular production string within said completion string, wherein:said injection fluid flow path includes a space between said production string and said completion string; said production sleeve bridges said space between said production string and said completion string; and said production sleeve bypass channel passes through said production sleeve from a portion of said space above said production sleeve to a portion of said space below said production sleeve.
  • 24. The injection and production system recited in claim 15, further comprising a tubular production string within said completion string, wherein:said injection fluid flow path includes a space between said production string and said completion string; said injection sleeve bridges said space between said production string and said completion string; and said injection sleeve bypass channel passes through said injection sleeve from a portion of said space above said injection sleeve to a portion of said space below said injection sleeve.
  • 25. The injection and production system recited in claim 15, wherein said production sleeve is adapted for shifting under remote control to selectively conduct production fluid from said production fluid inlet port to said production fluid flow path.
  • 26. The injection and production system recited in claim 25, further comprising a hydraulic actuator adapted to remotely shift said production sleeve.
  • 27. The injection and production system recited in claim 15, wherein said injection sleeve is adapted for shifting under remote control to selectively conduct injection fluid from said injection fluid flow path to said injection fluid outlet port.
  • 28. The injection and production system recited in claim 27, further comprising a hydraulic actuator adapted to remotely shift said injection sleeve.
  • 29. A system for injecting into and producing from multiple zones in a well bore, comprising:a tubular completion string, said completion string having a production fluid inlet port and an injection fluid outlet port; a tubular production string within said completion string; a production sleeve mounted on said production string; an injection sleeve mounted within said completion string; a plurality of bypass channels through said production sleeve and said injection sleeve, in fluid communication with a space between said production string and said completion string; a production fluid conduit in said production sleeve, said production sleeve being adapted to shift relative to said completion string to selectively conduct production fluid from said production fluid inlet port to said production string, via said production fluid conduit; and an injection fluid conduit in said injection sleeve, said injection sleeve being adapted to shift relative to said completion string to selectively conduct injection fluid from said space between said production string and said completion string, to said injection fluid outlet port, via said injection fluid conduit.
  • 30. A method for producing fluid from a production zone of a well bore and injecting fluid into an injection zone of a well bore, said method comprising:providing a tubular completion string, said completion string having a production fluid conduit and an injection fluid conduit therein, said completion string having an inlet port and an outlet port through a wall thereof; aligning said inlet port with a production zone of a well bore; aligning said outlet port with an injection zone of said well bore; pumping injection fluid into an injection fluid flow path within said completion string; selectively shifting said injection fluid conduit and said production fluid conduit relative to said completion string to place said injection fluid flow path in fluid flow communication with said outlet port, and to place said inlet port in fluid flow communication with a production fluid flow path in said completion string; and injecting fluid through said outlet port into said injection zone and producing fluid through said inlet port from said production zone.
  • 31. The method recited in claim 30, further comprising:providing a plurality of production fluid conduits and a plurality of inlet ports in said completion string; aligning said plurality of inlet ports with a plurality of production zones of a well bore; selectively shifting said plurality of production fluid conduits relative to said completion string to place at least one said inlet port in fluid flow communication with a production fluid flow path in said completion string; and injecting fluid through said outlet port into said injection zone and producing fluid through said at least one inlet port from at least one said production zone.
  • 32. The method recited in claim 30, further comprising:providing a plurality of injection fluid conduits and a plurality of outlet ports in said completion string; aligning said plurality of outlet ports with a plurality of injection zones of said well bore; selectively shifting said plurality of injection fluid conduits relative to said completion string to place said injection fluid flow path in fluid flow communication with at least one said outlet port; and injecting fluid through said at least one outlet port into at least one said injection zone and producing fluid through said inlet port from said production zone.
  • 33. The method recited in claim 30, further comprising:providing a plurality of production fluid conduits, a plurality of injection fluid conduits, a plurality of inlet ports, and a plurality of outlet ports in said completion string; aligning said plurality of inlet ports with a plurality of production zones of a well bore; aligning said plurality of outlet ports with a plurality of injection zones of said well bore; selectively shifting said plurality of injection fluid conduits and said plurality of production fluid conduits relative to said completion string to place said injection fluid flow path in fluid flow communication with said plurality of outlet ports, and to place said plurality of inlet ports in fluid flow communication with a production fluid flow path in said completion string; and injecting fluid through said plurality of outlet ports into said plurality of injection zones and producing fluid through said plurality of inlet ports from said plurality of production zones.
  • 34. A method for producing fluid from a production zone of a well bore and injecting fluid into an injection zone of a well bore, said method comprising:providing a tubular completion string, said completion string having a production sleeve and an injection sleeve therein, said completion string having an inlet port and an outlet port through a wall thereof; aligning said inlet port with a production zone of a well bore; aligning said outlet port with an injection zone of said well bore; pumping injection fluid into an injection fluid flow path within said completion string; selectively shifting said injection sleeve relative to said completion string to place said injection fluid flow path in fluid flow communication with said outlet port; selectively shifting said production sleeve relative to said completion string to place said inlet port in fluid flow communication with a production fluid flow path in said completion string; and injecting fluid through said outlet port into said injection zone and producing fluid through said inlet port from said production zone.
  • 35. The method recited in claim 34, further comprising:providing a plurality of production sleeves and a plurality of inlet ports in said completion string; aligning said plurality of inlet ports with a plurality of production zones of a well bore; selectively shifting said plurality of production sleeves relative to said completion string to place at least one said inlet port in fluid flow communication with a production fluid flow path in said completion string; and injecting fluid through said outlet port into said injection zone and producing fluid through said at least one inlet port from at least one said production zone.
  • 36. The method recited in claim 34, further comprising:providing a plurality of injection sleeves and a plurality of outlet ports in said completion string; aligning said plurality of outlet ports with a plurality of injection zones of said well bore; selectively shifting said plurality of injection sleeves relative to said completion string to place said injection fluid flow path in fluid flow communication with at least one said outlet port; and injecting fluid through said at least one outlet port into at least one said injection zone and producing fluid through said inlet port from said production zone.
  • 37. The method recited in claim 34, further comprising:providing a plurality of production sleeves, a plurality of injection sleeves, a plurality of inlet ports, and a plurality of outlet ports in said completion string; aligning said plurality of inlet ports with a plurality of production zones of a well bore; aligning said plurality of outlet ports with a plurality of injection zones of said well bore; selectively shifting said plurality of injection sleeves relative to said completion string to place said injection fluid flow path in fluid flow communication with said plurality of outlet ports; selectively shifting said plurality of production sleeves relative to said completion string to place said plurality of inlet ports in fluid flow communication with a production fluid flow path in said completion string; and injecting fluid through said plurality of outlet ports into said plurality of injection zones and producing fluid through said plurality of inlet ports from said plurality of production zones.
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Number Date Country
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Baker Oil Tools; Flow Control Systems Technical Unit; Equalizing Test Sleeve for Dual Flow Head System; Jul., 1999; Product Family No. H99508; Unit No. 4826; Index 480.30; 1 page.
Baker Oil Tools; Flow Control Systems Technical Unit; Separation Sleeve for Dual Flow Head System; Jul., 1999; Product Family No. H99508; Unit No. 4827; Index 480.30; 1 page.
Baker Oil Tools; Flow Control Systems Technical Unit; Separation Sleeve for X-Flow Injection and Production System; Feb. 22, 2000; Product Family No. H70042; Unit No. 4893; Index 480.30; 1 page.
Baker Oil Tools; Flow Control Systems Technical Unit; Injection Sleeve for X-Flow Injection And Production System; Feb. 22, 2000; Product Family No. H70043; Unit No. 4894; Index 480.30 (draft 1); 1 page.
Baker Oil Tools; Flow Control Systems Technical Unit; Baker X-Flow Injection And Production System; Feb. 23, 2000; Product Family No. H70044; Unit No. 4896; Index 480.10 (draft 1); 1 page.
Baker Oil Tools; Packer Systems Technical Unit; Baker Model SB-RM Hydro Set Retainer Production Packer With Integral Annulus Flow Sleeve (AFS); Feb. 25, 1999; Product Family No. H40950; Unit No. 4897; Index 410.10; 1 page.
Baker Oil Tools; Flow Control Technical Unit; Models “CMD” And “CMU” Non-Elastomeric Sliding Sleeves; Feb. 15, 2000; Product Family Nos. H81080 and H81079; Unit No. 8697; Index 480.10; 1 page.
Baker Oil Tools; X-Flow Injection & Production System; poster.
U.S. patent application Ser. No. 09/883,595, Pringle et al., filed Jun. 18, 2001.