Retrievable bridge plug

Details Retrievable bridge plug Retrievable bridge plug

2011-01-04

2011-01-04

Thompson, Kenneth (Department: 3676)

Wells

Packers or plugs

With expanding anchor

C166S135000, C166S119000, C166S118000, C175S423000

Reexamination Certificate

active

07861773

ABSTRACT:
Retrievable bridge plug used in oil and gas wells comprises a setting and anchoring mechanism, a locking and releasing mechanism and a sealing and anti-adhering mechanism. The bridge plug in which a self-lock mechanism is placed can be lowered through an coiled tubing or wireline, and provide reliable bi-directional sealing, and can be taken out by a specific tool after setting, in order to be used repeatedly after simple maintenance. By replacing its mandrel, the bridge plug can be refitted into a squeezing bridge plug, a conventional one and a hook-wall bridge plug to be used in a temporary/permanent and selective blocking operation. Also, the bridge plug can be associated with other downhole tools to perform well test, layer protection and snubbing.

REFERENCES:
patent: 5085273 (1992-02-01), Coone
patent: 5368335 (1994-11-01), Dinnes
patent: 6220348 (2001-04-01), Serafin et al.
patent: 6315041 (2001-11-01), Carlisle et al.
patent: 2276554 (1998-03-01), None
patent: 2305482 (1999-01-01), None
patent: 2425196 (2001-03-01), None
patent: 2707952 (2005-07-01), None

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