Wells – Packers or plugs – With controllable passage between central chamber and space...
Patent
1994-01-06
1994-11-08
Buiz, Michael Powell
Wells
Packers or plugs
With controllable passage between central chamber and space...
166153, E21B 3300
Patent
active
053618351
ABSTRACT:
Cementing plugs for use in the cementing of casing in oil and gas wells. The cementing plugs are well-suited for use with a polycrystalline diamond compact drill bit.
REFERENCES:
patent: 5095980 (1992-03-01), Watson
Brown Randall C.
Buiz Michael Powell
LaFleur Petroleum Services, Inc.
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