Wells – Processes – Cementing – plugging or consolidating
Patent
1991-03-26
1992-03-31
Suchfield, George A.
Wells
Processes
Cementing, plugging or consolidating
106725, 106727, 106819, 523130, 166295, E21B 3314
Patent
active
050999222
ABSTRACT:
This invention involves cementing compositions for the oil industry and their use in cementing wells. More specifically, this invention involves the control of the gas migration or gas channeling phenomenon that occurs during the setting of a cement slurry. A cementing composition, capable of inhibiting gas channeling, comprised of gaseous fluid, hydraulic cement, and a gas channeling inhibiting additive comprised of a copolymer 2-acrylamido-2 methylpropane-3-sulphonic acid, N-vinylacylamide and acrylamide, is provided.
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Bielinski Peter A.
Suchfield George A.
The Western Company of North America
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