IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0118340
(2002-04-09)
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우선권정보 |
CA-2341659 (2001-03-20) |
발명자
/ 주소 |
- Ophardt, Heiner
- Mirbach, Ali
|
출원인 / 주소 |
|
대리인 / 주소 |
Riches, McKenzie & Herbert LLP
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인용정보 |
피인용 횟수 :
65 인용 특허 :
9 |
초록
▼
A pump assembly provides for direct replacement of volumes of liquid from a reservoir with equal volumes of air preferably at substantially atmospheric pressure, the same pressure or with pressure equalization to be at least equal to atmospheric pressure. A slide arrangement preferably positively di
A pump assembly provides for direct replacement of volumes of liquid from a reservoir with equal volumes of air preferably at substantially atmospheric pressure, the same pressure or with pressure equalization to be at least equal to atmospheric pressure. A slide arrangement preferably positively displaces liquid from the reservoir and air into the reservoir. The pump draws air from the atmosphere into a chamber from which the air either is available for passage to replace liquid from the reservoir or is pressurized to assist dispensing liquid, preferably, admixing with the liquid to provide foaming. Gravity separation of air and liquid to be dispensed is used to replace liquid with air in the reservoir and to selectively place air and liquid into communication with passageways for ejection.
대표청구항
▼
A pump assembly provides for direct replacement of volumes of liquid from a reservoir with equal volumes of air preferably at substantially atmospheric pressure, the same pressure or with pressure equalization to be at least equal to atmospheric pressure. A slide arrangement preferably positively di
A pump assembly provides for direct replacement of volumes of liquid from a reservoir with equal volumes of air preferably at substantially atmospheric pressure, the same pressure or with pressure equalization to be at least equal to atmospheric pressure. A slide arrangement preferably positively displaces liquid from the reservoir and air into the reservoir. The pump draws air from the atmosphere into a chamber from which the air either is available for passage to replace liquid from the reservoir or is pressurized to assist dispensing liquid, preferably, admixing with the liquid to provide foaming. Gravity separation of air and liquid to be dispensed is used to replace liquid with air in the reservoir and to selectively place air and liquid into communication with passageways for ejection. further comprising removing excess components of said fracturing slurry from said wellbore without use of coiled tubing. 5. The method of claim 4, further comprising utilizing said first selected production zone formation pressure to create fluid flow within said wellbore for removing excess components of said fracturing slurry from said wellbore. 6. The method of claim 1, further comprising moving said rig off said well after said step of running said production tubing and before said step of perforating. 7. The method of claim 1, wherein said one or more production zones include said first selected production zone and a second selected production zone at a well depth above said first selected production zone, whereby after said first selected production zone is to be shut off then said second selected production zone is to be brought into production, said second selected production zone having a second selected production zone formation pressure, said method further comprising: said installing of said production packer further comprises positioning said production packer at a well depth above said first selected production zone and above said second selected production zone, and said installing of said production tubing within said well with said rig further comprises positioning said bottom end of said production tubing at a well depth above said first selected production zone and above said second selected production zone. 8. The method of claim 7, further comprising plugging off said first selected production zone at a well depth below said second selected production zone and above an uppermost perforation of said first selected production zone without utilizing a rig capable of pulling said production tubing. 9. The method of claim 7, further comprising filling said well with a second completion fluid having a density such that a hydrostatic pressure of said second completion fluid created within said wellbore adjacent said second selected production zone is less than said second selected production zone formation pressure. 10. The method of claim 7, further comprising perforating said second selected production zone without use of a rig capable of pulling said production tubing. 11. The method of claim 10, further comprising installing a second screen assembly adjacent said second selected production zone. 12. The method of claim 11, further comprising pumping fracturing slurry around said second screen assembly and into said second production zone with a sufficient pressure to fracture said second selected production zone. 13. A method of completing a well having a wellbore and one or more production zones comprising a first selected production zone with a first selected production zone formation pressure, comprising: filling said wellbore with a completion fluid having a density less than about eleven pounds per gallon to thereby produce a hydrostatic pressure within said wellbore adjacent said first selected production zone; installing production tubing within said well with a rig such that a bottom end of said production tubing is positioned at a well depth above said one or more production zones; applying an applied pressure to said wellbore such that a total pressure of said hydrostatic pressure and said applied pressure in said wellbore adjacent said first selected production zone is greater than said first selected production zone formation pressure; perforating said wellbore adjacent said first selected production zone; positioning a dual-screen assembly in said wellbore adjacent said first selected production zone; pumping fracturing slurry around said dual-screen assembly and into said first selected production zone. 14. The method of claim 13, further comprising removing excess components of said fracturing slurry above said dual-screen assembly from said wellbore without the use of coiled tubing. 15. The method of claim 14, wherein said step of removing excess components of said fracturing slurry from said wellbore without use of coiled tubing further comprises utilizing said first selected production zone formation pressure to create fluid flow within said wellbore for removing said excess components of said fracturing slurry from said wellbore. 16. The method of claim 13, wherein said one or more production zones include said first selected production zone and a second selected production zone at a well depth above said first selected production zone, whereby after said first selected production zone is to be shut off then said second selected production zone is to be brought into production, said second production zone having a second selected production zone formation pressure, said method further comprising filling said well with a second completion fluid having a density such that a hydrostatic pressure of said second completion fluid created within said wellbore adjacent said second selected production zone is less than said second selected production zone formation pressure. 17. The method of claim 16, further comprising installing a second dual screen assembly adjacent said second selected production zone without use of rig capable of pulling said production tubing. 18. The method of claim 17, further comprising pumping fracturing slurry around said second dual-screen assembly and into said second selected production zone with a sufficient pressure to fracture said second production zone. 19. The method of claim 13, further comprising said rig being mounted above said well for said step of installing said production tubing, and moving said rig off of said well such that said rig is not mounted above said well after said step of installing production tubing. 20. A method of completing a well having a wellbore and one or more production zones comprising a first selected production zone with a first selected production zone formation pressure, said well comprising a second production zone at a well depth above said first selected production zone, said second selected production zone having a second selected production zone formation pressure, whereby after said first selected production zone is to be shut off then said second selected production zone is to be brought into production, said method comprising: positioning a production packer at a well depth above said first selected production zone and above said second production zone; positioning a production tubing string within said well such that a bottom end of said production tubing is positioned at a well depth above said first selected production zone and above said second selected production zone; perforating said wellbore adjacent said first selected production zone; running a dual-screen assembly into said production string; positioning said dual-screen assembly in said wellbore adjacent said first selected production zone; and pumping fracturing slurry through said production tubing around said dual-screen assembly and into said first selected production zone. 21. The method of claim 20, further comprising utilizing said first selected production zone formation pressure to create fluid flow within said wellbore for removing excess components of said fracturing slurry from said wellbore. 22. The method of claim 20, further comprising: plugging off said first selected production zone at a well depth below said second production zone and above an uppermost perforation of said first selected production zone to thereby prevent all fluid flow from said first selected production zone; perforating said second selected production zone without use of a rig capable of pulling said production tubing; installing a second screen assembly adjacent said second production zone; and pumping fracturing slurry around said second screen assembly and into said second production zone with a sufficient pressure to fracture said second production zone. 23. The method of claim 20, further comprising: providing said production tubing string with at lea st one subsurface valve; pulling a perforating gun above said at least one subsurface valve within said production string after said step of perforating; and closing said at least one subsurface valve. 24. The method of claim 20, further comprising: providing said production tubing string with at least one subsurface valve; running a screen assembly into said production string above said valve while said valve remains closed; and opening said at least one subsurface valve. 25. A method for a monobore well completion wherein a well has one or more production zones comprising a first selected production zone with a first selected production zone formation pressure, said monobore well completion comprising at least one tubular string cemented in a wellbore such that said at least one tubular string has no production packer mounted therein, said method comprising: perforating said at least one tubular string adjacent said first selected production zone; running a dual-screen assembly into said at least one tubular string; positioning said dual-screen assembly in said wellbore adjacent said first selected production zone within said at least one tubular string; and pumping fracturing slurry around said screen assembly and into said first selected production zone with sufficient force for fracturing said first selected production zone. 26. The method of claim 25 wherein said one or more production zones comprises said first selected production zone and a second selected production zone, said method further comprising: plugging off said first selected production zone at a well depth below said second selected production zone and above an uppermost perforation of said first selected production zone after said first selected production zone is to be shut off; perforating said at least one tubular string adjacent said first selected production zone; installing a second screen assembly adjacent said second production zone; and pumping fracturing slurry around said second screen assembly and into said second selected production zone with a sufficient pressure to fracture said second selected production zone. 27. The method of claim 26, wherein said steps of plugging off, perforating, installing, and pumping, are performed without the use of a rig. 28. The method of claim 25, further comprising: filling said wellbore with a completion fluid having a density such that a hydrostatic pressure of said completion fluid created within said wellbore adjacent said first production zone is less than said first selected production zone formation pressure; and applying an applied pressure to said wellbore such that a total pressure of said hydrostatic pressure and said applied pressure in said wellbore adjacent said first selected production zone is greater than or equal said first selected production zone formation pressure. 29. The method of claim 25 wherein said at least one tubular string comprises a first tubular string and a second tubular string, said method comprising: installing a first dual-screen assembly in said first tubular string, installing a second dual-screen assembly in said second tubular screen, and producing simultaneously through said first tubular string and said second tubular string.
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