Well cementing method using an AM/AMPS fluid loss additive blend

Details Well cementing method using an AM/AMPS fluid loss additive blend Well cementing method using an AM/AMPS fluid loss additive blend

1985-12-27

1986-12-30

Novosad, Stephen J.

Wells

Processes

Cementing, plugging or consolidating

106 90, 523130, E21B 3314

Patent

active

046321861

ABSTRACT:
An additive blend for a well cementing composition is shown which comprises a copolymer of acrylamide and 2-acrylamido-2-methylpropane sulfonate, the sodium salt of naphthalene formaldehyde sulfonate, and polyvinylpyrrolidone polymer. The fluid loss additive is mixed together with a hydraulic cement and water in an amount to produce a pumpable slurry. The cement slurry is pumped to the desired location in the wellbore and allowed to harden to a solid mass.

REFERENCES:
patent: 4015991 (1977-04-01), Persinski et al.
patent: 4258790 (1981-03-01), Hale
McKenzie et al., "Acrylamide/Acrylic Acid Copolymers for Cement Fluid Loss Control", SPE paper No. 10623, Society of Petroleum Engineers of AIME, Jan. 25-27, 1982.

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