Drilling fluid and method for drilling in coal-containing formations

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United States of America Patent

PATENT NO 10738229
APP PUB NO 20130225457A1
SERIAL NO

13776914

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Abstract

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A drilling fluid and method for drilling in a coal containing formation. The method includes: providing a mixed metal-viscosified drilling fluid including at least 1% potassium salt; circulating the drilling fluid through the well; and drilling into a coal seam.

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Patent Owner(s)

Patent OwnerAddress
CANADIAN ENERGY SERVICES L P1400 700 - 4TH AVENUE SW CALGARY T2P 2X6

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Smith, Carl Keith Calgary, CA 16 211
Stoian, Stefan Alexandru Calgary, CA 6 59

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