Well drilling and production fluids employing parenchymal...

Details Well drilling and production fluids employing parenchymal... Well drilling and production fluids employing parenchymal...

C - Chemistry, Metallurgy

09

K

31/26

C09K 8/20 (2006.01) C09K 8/90 (2006.01) E21B 21/00 (2006.01)

Patent

CA 1242872

ABSTRACT Circulating and non-circulating well-drilling fluids are provided comprising parenchymal cell cellulose. In accordance with a preferred embodiment, improved viscosity and fluid loss control in circulating well-drilling fluids are obtained from the inclusion of parenchymal cell cellulose in such fluids. In accordance with another preferred embodiment, certain polymers, especially anionic polymers, and polymers derived from hemicellulosic materials are admixed with parenchymal cell cellulose in well fluids to provide synergistic fluid loss control and other beneficial properties. Methods for the employment of circulating and non-circulating well fluids employing parenchymal cell cellulose are also disclosed.

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