[특허]Packer and service tool assembly

[미국특허] Packer and service tool assembly 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	E21B-023/06 E21B-033/128 E21B-043/04
출원번호	US-0161311 (1988-02-23)
발명자 / 주소	Scranton Joseph D. (Tulsa OK)
출원인 / 주소	Dowell Schlumberger Incorporated (Tulsa OK 02)
인용정보	피인용 횟수 : 25 인용 특허 : 9

초록 ▼

A packer and service tool assembly for oil or gas well preparation includes a disengageable coupling mechanism which permits the tool to be screwed into and out of the packer and which can be hydraulically disengaged so that the tool can be removed without applying torque to the tool or workstring. A releasable ratchet mechanism is also provided in the packer for trapping the setting loads when the packer is set in the casing. The ratchet mechanism is releasable by pulling up a housing portion which cammingly engages collapsible ratchet fingers thereby disengaging the ratchet finger trapping teeth from a stationary ratchet ring.

대표청구항 ▼

A gravel packer assembly and service tool, including a hydraulically actuable coupling for connecting and disconnecting the gravel packer assembly with the service tool for assembled use in a well comprising: a male member mounted on the service tool, said male member including a collet-like element having threaded and slotted arcuate fingers; a mateable female member mounted on the packer assembly, said female member having internal threads mating with the external threads mounted on the male member so that the service tool can be screwed into and out of the packer assembly, said externally threaded and slotted arcuate fingers being inherently biased inwardly when no radial force is applied thereto so that the male member can be disengaged from the female member without applying torque thereto; and hydraulically actuated releasing means for torquelessly disengaging said male member from said female member, said releasing means including means mounted on said service tool for maintaining the fingers on said male member in engagement with the female member, the maintaining means including a collapsible split locking ring and piston both disposed within the collet-like member, said piston slidably mounted for movement between a first position and a second position, said ring being expandably mountable on a portion of said piston and engaging said fingers in an expanding manner when said piston is in said first position, said ring collapsing to a smaller diameter and out of engagement with said fingers when said piston moves to said second position thereby permitting said fingers to disengage from said female member, and wherein the packer assembly has means for setting the packer assembly in a casing of the well, the service tool operatively connected to the packer assembly and having means for hydraulically actuating said setting means in response to a first workstring pressure supplied to the service tool by a connecting workstring, means for actuating said releasing means in response to a relatively greater second workstring pressure to release the service tool from the packer assembly, and means responsive to a third workstring pressure relatively greater than said first and second workstring pressures for performing a gravel pack operation by opening a ball valve in the service tool to provide communication between the workstring and an annulus within the well.

이 특허에 인용된 특허 (9) 인용/피인용 타임라인 분석

Turner Dewayne (Breaux Bridge LA) Menard Raymond A. (Lafayette LA) Oneal Dean (Lafayette LA), Gravel pack assembly.
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Dickerson Richard C. (Slidell LA), Hydraulic packer assembly.
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Pitts Glen E. (The Colony TX), Hydraulic running and setting tool for well packer.
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McGill Howard L. (Lufkin TX) Scranton Joseph D. (Tulsa OK), Packer and service tool assembly.
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Vann ; Roy R., Positive tubing release coupling.
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George Flint R. (Katy TX), Releasable coupling.
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Nunez Carl W. (Lafayette LA) Squyres Joseph S. (Lafayette LA), Releasing tool.
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Evans Robert W. (Huntsville TX) Montgomery James W. (Huntsville TX), Retrievable well packer.
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Oden Jerome H. (Houston TX) Swanson ; Jr. Roy E. (Sugar Land TX) Vondall Ronald J. (Sulphur Springs TX), Well bore apparatus with hydraulically releasable tubing seal unit.
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이 특허를 인용한 특허 (25) 인용/피인용 타임라인 분석

Farley David L. (Lafayette LA), Bi-directional pressure assisted sealing packers.
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Braddick, Britt O., Downhole tubular patch, tubular expander and method.
상세보기
Doane, James C.; Harper, Jason M., Expandable packer with anchoring feature.
상세보기
Doane, James C.; Harper, Jason M.; Baugh, John Lindley, Expandable packer with anchoring feature.
상세보기
Doane,James C.; Harper,Jason M., Expandable packer with anchoring feature.
상세보기
Doane,James C.; Harper,Jason M., Expandable packer with anchoring feature.
상세보기
Doane,James C.; Harper,Jason M.; Baugh,John Lindley, Expandable packer with anchoring feature.
상세보기
Doane,James C.; Harper,Jason M.; Baugh,John Lindley, Expandable packer with anchoring feature.
상세보기
Doane,James C.; Harper,Jason M.; Baugh,John Lindley, Expandable packer with anchoring feature.
상세보기
Foster Michael J. ; Anyan Steven L. ; Bissonnette Harold Steven, Full bore set down tool assembly for gravel packing a well.
상세보기
Echols Ralph H., Gravel pack apparatus.
상세보기
Echols Ralph H., Gravel pack apparatus.
상세보기
Echols Ralph H., Gravel pack apparatus.
상세보기
Echols Ralph H., Gravel pack apparatus.
상세보기
Streater,James R.; Leach,Donald L., Hydraulic jar lock.
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Baker Samuel F. (Conroe TX), Hydraulic running and release tool with mechanical emergency release.
상세보기
Bixenman, Patrick W.; Anyan, Steven L.; Schutz, Micah L.; Pramann, II, James A., Method and apparatus for gravel packing with a pressure maintenance tool.
상세보기
Cox,Jay D., Method and apparatus for retrieving an object from a well bore.
상세보기
Anyan,Steven L.; Virally,Stephane J.; Aardalsbakke,Olukemi Ibironke, Method and apparatus to selectively reduce wellbore pressure during pumping operations.
상세보기
Echols Ralph H., Methods of completing a subterranean well.
상세보기
Pietrobelli, Alejandro; Pietrobelli, Fausto, Packing device for oil wells.
상세보기
Xu, Richard Y., Retrievable tool with ratchet lock feature.
상세보기
Ross, Richard J., Step ratchet mechanism.
상세보기
Ross,Richard J., Step ratchet mechanism.
상세보기
Ricalton,Allen E.; Majkovic,Davor, System and method for installing a liner in a borehole.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Packer and service tool assembly 원문보기