Dispersant and fluid loss additives for oil field cements

Details Dispersant and fluid loss additives for oil field cements Dispersant and fluid loss additives for oil field cements

1984-05-30

1985-12-10

Dixon, Jr., William R.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106314, 166293, C04B 7354

Patent

active

045577633

ABSTRACT:
Dispersants and fluid loss additives for inclusion in oil field cements and methods of using the resultant compositions in oil, gas and water well cementing operations are disclosed. Such compositions incorporate a polymeric additive prepared by caustic-catalyzed condensation for formaldehyde with acetone, or a substance derived from acetone, wherein said polymer includes sodium sulfonate groups in an amount sufficient to render such polymer water soluble. A second fluid loss additive such as hydroxyethyl cellulose, carboxymethylhydroxyethyl cellulose, copolymers of N,N-dimethylacrylamide and 2-acrylamido, 2-methyl propane sulfonic acid or copolymers of acrylamide and 2-acrylamido, 2-methyl propane sulfonic acid may optionally be included.

REFERENCES:
patent: 4125497 (1978-11-01), Josten et al.

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