Wells – Packers or plugs – With controllable passage between central chamber and space...
Patent
1993-03-29
1994-05-17
Bui, Thuy M.
Wells
Packers or plugs
With controllable passage between central chamber and space...
166192, E21B 3300
Patent
active
053119401
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.
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Brown Randall C.
Bui Thuy M.
LaFleur Petroleum Services, Inc.
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