Fluid loss control in oil field cements

Details Fluid loss control in oil field cements Fluid loss control in oil field cements

1985-06-04

1987-04-21

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

106 90, C09K 700

Patent

active

046597506

ABSTRACT:
An aqueous slurry which comprises (a) a cement; (b) about 0.05 to 5.0 wt. % of a copolymer of N-vinylpyrrolidone and a salt of styrenesulfonic acid based on the dry weight of said cement; (c) about 0.05 to 5.0 wt. % of a formaldehyde condensed naphthalene-sulfonic acid salt based on the dry weight of said cement; and (d) water, said cement, said copolymer and said dispersant being dispersed in said water to form said aqueous slurry.

REFERENCES:
patent: 3359225 (1967-12-01), Weisend
patent: 4258790 (1981-03-01), Hale
patent: 4480693 (1984-11-01), Newlove

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