Wells – Processes – Placing or shifting well part
Reexamination Certificate
2006-07-25
2006-07-25
Gay, Jennifer H. (Department: 3672)
Wells
Processes
Placing or shifting well part
C166S187000
Reexamination Certificate
active
07080693
ABSTRACT:
A releasable packer device and a method for selectively releasing a packer assembly from a set position in a wellbore. A packer assembly is described that incorporates a split body lock ring that is in ratcheting engagement with a central mandrel to secure the packer elements in a set position. In addition, there is a mechanical means for releasing the body lock ring from its locking position to an unlocked position. The body lock ring is released by radially expanding the ring by urging an axially-movable release sub with a releasing portion into contact with the body lock ring to unseat the ratcheting mechanism that retains the packer assembly in its set position.
REFERENCES:
patent: 1804619 (1931-05-01), Humason
patent: 3602305 (1971-08-01), Kisling, III
patent: 3603388 (1971-09-01), Current et al.
patent: 4289200 (1981-09-01), Fisher, Jr.
patent: 4526229 (1985-07-01), Dickerson
patent: 4573537 (1986-03-01), Hirasuna et al.
patent: 4582135 (1986-04-01), Akkerman
patent: 5069280 (1991-12-01), McKee et al.
patent: 5311938 (1994-05-01), Hendrickson et al.
patent: 5526884 (1996-06-01), Lembcke
patent: 5727632 (1998-03-01), Richards
patent: 5884699 (1999-03-01), Mullen et al.
patent: 5941306 (1999-08-01), Quinn
patent: 6629563 (2003-10-01), Doane
Norrie Bruce McAdam
Smith Robert Charles
Walker Neil
Baker Hughes Incorporated
Gay Jennifer H.
Madan Mossman & Sriram P.C.
Smith Matthew J.
LandOfFree
Retrievable packer assembly, method, and system with... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Retrievable packer assembly, method, and system with..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Retrievable packer assembly, method, and system with... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3532424