Downhole weight bearing apparatus and method

Details Downhole weight bearing apparatus and method Downhole weight bearing apparatus and method

2006-12-26

2006-12-26

Thompson, Kenneth (Department: 3672)

Wells

Processes

Placing or shifting well part

C166S208000, C166S212000

Reexamination Certificate

active

07152686

ABSTRACT:
A downhole tool for connection in a work string to prevent premature activation of weight set tools on the work string. The tool has moveable pads which contact the tubing wall and thereby support the weight of the work string. The pads are activated by increasing fluid pressure in the annulus between the tool and tubing wall and deactivated by increasing fluid pressure through the central bore of the tool.

REFERENCES:
patent: 2765853 (1956-10-01), Brown
patent: 2880805 (1959-04-01), Gibbs et al.
patent: 3112795 (1963-12-01), Keithahn
patent: 3211227 (1965-10-01), Mott
patent: 3412799 (1968-11-01), Ellis
patent: 3561490 (1971-02-01), Little
patent: 4285402 (1981-08-01), Brieger
patent: 5293945 (1994-03-01), Rosenhauch et al.
patent: 945321 (1956-07-01), None

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