Compositions and methods for inhibiting lost circulation...

Details Compositions and methods for inhibiting lost circulation... Compositions and methods for inhibiting lost circulation...

C - Chemistry, Metallurgy

09

K

C09K 8/03 (2006.01) E21B 33/13 (2006.01)

Patent

CA 2696388

Drilling fluid additive compositions are provided for use with synthetic, oil based, or water based drilling fluids. The combined additive and drilling fluid are effective for reducing lost circulation, seepage loss as well as wellbore strengthening and/or wellbore lining. The method includes injecting the drilling fluid and 0.01 or more pounds per barrel of a loss control additive including ground and sized pumice, barite or dolomite.

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