Clay stabilizing method for oil and gas well treatment

Details Clay stabilizing method for oil and gas well treatment Clay stabilizing method for oil and gas well treatment

1991-02-25

1992-03-31

Suchfield, George A.

Wells

Processes

Cementing, plugging or consolidating

1663051, 166307, 166308, 252 8551, 252 8553, 405264, E21B 4325

Patent

active

050999230

ABSTRACT:
A clay swelling inhibitor additive for oil and gas well treatment is disclosed. The additive comprises an aqueous solution of tetraalkylammonium chloride, preferably tetramethylammonium chloride and a quaternary amine-based cationic polyelectrolyte, such as methyl chloride quaternary salt of ethylene-ammonia condensation polymer. The additive composition synergistically retards water absorption by the down-hole clay formation.

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Sax, N. Irving et al, Hawley's Condensed Chemical Dictionary, eleventh edition, 1987, Van Nostrand Reinhold Comany, New York, p. 343.

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