Low temperature set retarded well cement compositions and method

Details Low temperature set retarded well cement compositions and method Low temperature set retarded well cement compositions and method

1994-11-18

1995-12-05

Suchfield, George A.

Wells

Processes

Cementing, plugging or consolidating

106803, 106811, 524 5, F21B 33138, F21B 3314

Patent

active

054720516

ABSTRACT:
Improved set retarded cement compositions for cementing subterranean zones in wells at low temperatures having excellent short term compressive strength development and methods of using such compositions are provided. The compositions are basically comprised of a hydraulic cement, water and a copolymer containing 2-acrylamido-2-methylpropane sulfonic acid in an amount in the range of from about 65 to about 85 mole percent and acrylic acid in an amount in the range of from about 15 to about 35 mole percent having an average molecular weight below about 5000.

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patent: 5341881 (1994-08-01), Rodrigues
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