Shale stabilizer and method of use thereof

Details Shale stabilizer and method of use thereof Shale stabilizer and method of use thereof

1986-08-21

1988-07-19

Ivy, C. Warren

Wells

Processes

Cementing, plugging or consolidating

175 72, 523130, 523132, E21B 33138

Patent

active

047578629

ABSTRACT:
Water-soluble copolymers which are essentially free of cross-linking are useful as shale stabilizers. These copolymers are random copolymers of a vinyl carboxamide monomer and a hydroxy-containing vinyl carboxylic ester. These shale stabilizers are added to a drilling fluid which is then circulated through a well bore whereby the shale stabilizers come in contact with the shale formation and inhibit hydration of shale to prevent sloughing thereof.

REFERENCES:
patent: 2801984 (1957-08-01), Morgan
patent: 3011547 (1961-12-01), Holbert
patent: 4142595 (1979-03-01), Anderson
patent: 4268400 (1981-05-01), Lucas
patent: 4288582 (1981-09-01), Lucas
patent: 4323463 (1982-04-01), Morduchowitz

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