Apparatus and method for cementing a liner in a well bore

Details Apparatus and method for cementing a liner in a well bore Apparatus and method for cementing a liner in a well bore

1988-01-25

1989-06-27

Neuder, William P.

Wells

Processes

Cementing, plugging or consolidating

166291, 166155, 166156, E21B 3316

Patent

active

048420697

ABSTRACT:
An apparatus and method are shown for cementing a liner in a well bore. An operating string of smaller diameter is inserted within the internal diameter of the liner. A setting tool initially connects the operating string within the liner and includes a plug carrying body at the lowermost extent. A top plug is releasably supported from the plug carrying body and a longitudinally spaced bottom plug is releasably supported from the top plug. A collet latch secures the top plug to the plug carrying body and a collet latch secures the bottom plug to the top plug. A shiftable sleeve positively locks the top plug to the plug carrying body until the collet latch securing the bottom plug is released.

REFERENCES:
patent: Re29830 (1978-11-01), Scott
patent: 2249511 (1941-07-01), Westall
patent: 3364996 (1968-01-01), Brown
patent: 3545542 (1970-12-01), Scott
patent: 3635288 (1972-01-01), LeBourg
patent: 3730267 (1973-05-01), Scott
patent: 4624312 (1986-11-01), McMullin

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