Wells – Processes – Cementing – plugging or consolidating
Patent
1984-12-19
1986-09-09
Suchfield, George A.
Wells
Processes
Cementing, plugging or consolidating
106 90, 166295, 523130, E21B 33138
Patent
active
046103066
ABSTRACT:
A well bore cementing composition and method are shown in which a hydraulic cement, water and fluid loss additive are combined to form a cementing slurry. The fluid loss additive is a copolymer of a first monomer of dimethyl-diallyl ammonium chloride and a second anionic monomer. The monomer ratio of the non-ionic, water soluble monomer to the anionic monomer is in the range from about 85:15 to 95:5, and the copolymer has a molecular weight in the range from about 200,000 to 400,000.
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McKenzie Lee F.
Pace Ray S.
Reese Dyke W.
Gunter Jr. Charles D.
Hughes Tool Company
Suchfield George A.
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