Wells – Processes – Placing or shifting well part
Patent
1997-10-31
1999-11-23
Tsay, Frank
Wells
Processes
Placing or shifting well part
1661176, E21B 2302
Patent
active
059882875
ABSTRACT:
A configuration is provided to anchor the tubing string into a polished-bore receptacle while providing the ability to disconnect the tubing string from the polished-bore receptacle in a single trip in the wellbore. The configuration of the anchor provides for metal-to-metal sealing, and the disconnection is accomplished by a penetrating tool which accesses an annular cavity to unsupport locking dogs which facilitate removal of the tubing string from the polished-bore receptacle with applied pressure. If the packer needs to come out for any reason, a retrieving tool is described which, in a single trip, allows the retrieving tool to be advanced thru-tubing into the packer itself to unlock it. The retrieving tool is pulled out of the tubing and a pick-up force is applied to the tubing string to extend the packer to allow for its ultimate removal with the tubing. The retrieving tool preferably employs jarring forces to release the packer.
REFERENCES:
patent: 4089548 (1978-05-01), Gurley
patent: 4290484 (1981-09-01), Beall et al.
patent: 4399873 (1983-08-01), Lindsey, Jr.
patent: 4971365 (1990-11-01), Schultz
Jordan, Jr. Henry Joe
Zimmerman Patrick J.
Baker Hughes Incorporated
Tsay Frank
LandOfFree
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