[특허]Well casing packers

[미국특허] Well casing packers 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	E21B-033/03
출원번호	US-0430012 (1989-11-01)
우선권정보	CA-0581963 (1988-11-02)
발명자 / 주소	McLeod Roderick D. (5104-125 Street Edmonton Alberta CAX T6H 3V5)
인용정보	피인용 횟수 : 34 인용 특허 : 7

초록 ▼

An expanding nipple, externally mounted packer has a body which mounts onto a stack of blowout preventers or a casing head and tubing spool or the like. The body contains an external locking mechanism and the upper ends of a pair of concentric mandrels which are lowered into the well casing, through the blowout preventer stack or other configuration of well head equipment. The outer mandrel has a deformable seal on its lower end and the inner mandrel has an expander on its lower end. A piston on the inner mandrel responsive to hydraulic pressure, raises the inner mandrel with respect to the outer mandrel so that the expander forces the seal outwards against the casing wall. The locking mechanism allows the seal to be locked in place. The hydraulic pressure on the piston is reversed to unseal the nipple.

대표청구항 ▼

A short-coupled, well casing packer comprising: (a) a body adapted for external mounting on a well casing head, tubing spool or the like; (b) concentrically arranged inner and outer mandrels supported in said body, each outer mandrel being adapted to be restrained to the casing head and said inner mandrel being axially moveable within said outer mandrel, the upper end of said inner mandrel extending upwardly and outwardly of said body and having a connecting flange; (c) high pressure seal means on the lower end of said outer mandrel for circumferentially sealing the lower end of said outer mandrel against the inner wall of said casing; (d) seal expanding means on the lower end of said inner mandrel for circumferentially engaging and radially expanding said seal means; (e) hydraulic pressure responsive piston means in said body and secured to said inner mandrel for linearly moving said inner mandrel upwardly or downwardly with respect to said outer mandrel; and (f) means engaging the upper end of said inner mandrel for locking said inner mandrel in position relative to said outer mandrel, comprising a lock nut having a peripheral rim portion threadably engaging the outside of said body and a planar collar portion, normal to said rim portion, and being disposed intermediate the upper end of said body and the under-surface of said connecting flange; whereby, when said inner mandrel is moved upwardly by said piston means, the distance of said movement will be indicated by the commensurate space between the lower surface of said connecting flange and the upper surface of said planar collar portion.

이 특허에 인용된 특허 (7) 인용/피인용 타임라인 분석

McLeod Roderick D. (5104 125th St. Edmonton ; Alberta CAX T6H 3V5), Insertion drive system for tree savers.
상세보기
Barrier Frank W. (Haughton LA) Winterrowd Kenneth W. (Shreveport LA), Remotely operated packer and anchor apparatus for changing a geothermal wellhead valve.
상세보기
Pitts Charles A. (Wichita Falls TX), Tree saver packer cup.
상세보기
McLeod Roderick D. (5104 125th Street Edmonton ; Alberta CAX T6H 3V5), Well casing packer.
상세보기
McLeod Roderick D. (5104 125th St. Edmonton ; Alberta CAX T6H 3V5), Well head isolation tool.
상세보기
Bullen Ronald S. (98 Willow Park Green ; SE. Calgary ; Alberta CAX), Well tree saver.
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Garner Jonathan W. (1120 Hunterston Hill NW. Calgary ; AB CAX T2K 4N8) Dallas L. Murray (524 Oakwood Place ; SW. Calgary ; Alberta CAX T2V 0K3), Wellhead isolation tool and setting and method of using same.
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이 특허를 인용한 특허 (34) 인용/피인용 타임라인 분석

McGuire,Bob; Dallas,L. Murray, Adapters for double-locking casing mandrel and method of using same.
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Dallas L. Murray, Apparatus for increasing the flow of production stimulation fluids through a wellhead.
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Dallas, L Murray, Blowout preventer protector and method of using same.
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Dallas, L. Murray, Blowout preventer protector and method of using same.
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L. Murray Dallas, Blowout preventer protector and method of using same.
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Dallas L. Murray, Blowout preventer protector for use during high pressure oil/gas well stimulation.
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McGuire, Bob, Casing mandrel for facilitating well completion, re-completion or workover.
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McGuire, Bob, Casing mandrel for facilitating well completion, re-completion or workover.
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Dallas,L. Murray; McGuire,Bob, Casing mandrel with well stimulation tool and tubing head spool for use with the casing mandrel.
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Dallas,L. Murray; McGuire,Bob, Casing mandrel with well stimulation tool and tubing head spool for use with the casing mandrel.
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Dallas,L. Murray; McGuire,Bob, Casing mandrel with well stimulation tool and tubing head spool for use with the casing mandrel.
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Dallas, L. Murray, Cup tool for high pressure mandrel.
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McGuire, Bob; Dallas, L. Murray, Drilling flange and independent screwed wellhead with metal-to-metal seal and method of use.
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McGuire,Bob; Dallas,L. Murray, Drilling flange and independent screwed wellhead with metal-to-metal seal and method of use.
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McGuire,Bob; Dallas,L. Murray, Drilling flange and independent screwed wellhead with metal-to-metal seal and method of use.
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McGuire,Bob; Dallas,L. Murray, Drilling flange and independent screwed wellhead with metal-to-metal seal and method of use.
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Dallas, L. Murray; McGuire, Bob; Artherholt, Danny Lee, High-pressure threaded union with metal-to-metal seal, and metal ring gasket for same.
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Dallas, L. Murray; McGuire, Bob; Artherholt, Danny Lee, High-pressure threaded union with metal-to-metal seal, and metal ring gasket for same.
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Dallas,L. Murray; McGuire,Bob; Artherholt,Danny Lee, High-pressure threaded union with metal-to-metal seal, and metal ring gasket for same.
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Lacheny, Michael A.; Syed, Wassee; Kajaria, Saurabh, Hydraulic surface connector.
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Lam, Tony M.; Schneider, Kevin Paul, Method and apparatus for isolating a wellhead for fracturing.
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McGuire, Bob; Dallas, L. Murray, Multi-lock adapters for independent screwed wellheads and methods of using same.
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McGuire, Bob; Dallas, L. Murray, Multi-lock adapters for independent screwed wellheads and methods of using same.
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McGuire, Bob; Dallas, L. Murray, Multi-lock adapters for independent screwed wellheads and methods of using same.
상세보기
McGuire,Bob; Dallas,L. Murray, Multi-lock adapters for independent screwed wellheads and methods of using same.
상세보기
McGuire,Bob; Dallas,L. Murray, Multi-lock adapters for independent screwed wellheads and methods of using same.
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McGuire,Bob; Dallas,L. Murray, Multi-lock adapters for independent screwed wellheads and methods of using same.
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Starr, Phillip M.; Folds, Don S.; Stepp, Lee Wayne, Screw-driven wellhead isolation tool.
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Leng, Kuo-Tsung, Threaded pipe connection with a pressure energized flex-seal.
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Albert Augustus Mullins, Tubular filling system.
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Mullins, Albert Augustus, Tubular filling system.
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Harris Monty E., Wellhead bore isolation tool.
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Hickie, Barton, Wellhead isolation tool and methods.
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Hickie, Barton, Wellsite connector apparatus and method.
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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] Well casing packers 원문보기