Set retarded cement compositions and methods for well cementing

Details Set retarded cement compositions and methods for well cementing Set retarded cement compositions and methods for well cementing

1989-06-27

1990-07-17

Suchfield, George A.

Wells

Processes

Cementing, plugging or consolidating

106 84, 106803, 524 5, E21B 33138, E21B 3314

Patent

active

049415360

ABSTRACT:
Set retarded cement compositions for cementing across a zone or zones in a well having enhanced compressive strength and rapid gel strength development after placement. The cement compositions are comprised of hydraulic cement, sufficient fresh water to form a pumpable slurry, a set retarder comprising a copolymer of 2-acrylamido, 2-methylpropane sulfonic acid and acrylic acid having an average molecular weight below about 5000 and any other desired additives. Methods of cementing utilizing the cement composition also are provided.

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patent: 4524828 (1985-06-01), Sagins et al.
patent: 4582139 (1986-04-01), Childs et al.
patent: 4703801 (1987-11-01), Fry et al.
patent: 6646942 (1987-02-01), Brothers

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