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Title:
DOWNHOLE PACKER
Document Type and Number:
WIPO Patent Application WO2002064942
Kind Code:
A3
Abstract:
The present invention relates to packers adapted to seal an annular space within a wellbore. The packers, for example, may be utilised to circulate or reverse circulate a fluid. In one embodiment, the present apparatus (100) comprises a first tubular subunit (102) and a second tubular subunit (103) moveably coupled together, a flexible packing element (106) disposed between the first tubular subunit and the second tubular subunit, and a temporary mechanical connection adapted to restrain the first tubular subunit and the second tubular subunit from compressing the flexible packing element, in which the temporary mechanical connection is adapted to be hydraulically disengaged. In another embodiment, the present apparatus further comprises a valve (150). In one aspect, the present apparatus further comprises a cement inflation tool.

Inventors:
GUILLORY BRETT (US)
BETIK MIKE (US)
WHANGER KEN (US)
CUFFE CHRIS (US)
DION MIKE (US)
Application Number:
PCT/GB2002/000472
Publication Date:
November 21, 2002
Filing Date:
February 01, 2002
Export Citation:
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Assignee:
WEATHERFORD LAMB (US)
HARDING RICHARD PATRICK (GB)
GUILLORY BRETT (US)
BETIK MIKE (US)
WHANGER KEN (US)
CUFFE CHRIS (US)
DION MIKE (US)
International Classes:
E21B21/10; E21B23/02; E21B23/06; E21B33/127; E21B34/10; (IPC1-7): E21B33/128; E21B21/10; E21B23/06; E21B33/129; E21B33/1295
Domestic Patent References:
WO1998036152A11998-08-20
Foreign References:
US4754814A1988-07-05
US5180010A1993-01-19
US2315921A1943-04-06
US5615741A1997-04-01
US2638168A1953-05-12
US4949792A1990-08-21
US4018274A1977-04-19
US5082062A1992-01-21
EP0618343A21994-10-05
US5692564A1997-12-02
US6148664A2000-11-21
US3503445A1970-03-31
US2815817A1957-12-10
US4378051A1983-03-29
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