Treating shale and clay in hydrocarbon producing formations...

Details Treating shale and clay in hydrocarbon producing formations... Treating shale and clay in hydrocarbon producing formations...

E - Fixed Constructions

21

B

E21B 33/138 (2006.01) C09K 8/08 (2006.01) C09K 8/514 (2006.01) C09K 8/66 (2006.01)

Patent

CA 2355025

Clay stabilized in the drilling of wells for hydrocarbon production by the addition to the drilling fluid of potassium formate together with an amount of guar effective to inhibit clay and shale swelling and sloughing.

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