Clay stabilization during oil and gas well cementing operations

Details Clay stabilization during oil and gas well cementing operations Clay stabilization during oil and gas well cementing operations

E - Fixed Constructions

21

B

31/10

E21B 33/138 (2006.01) C04B 24/00 (2006.01) C04B 24/16 (2006.01) C04B 24/24 (2006.01) C09K 8/46 (2006.01) C09K 8/60 (2006.01)

Patent

CA 1182991

ABSTRACT A process for treating a subterranean formation with an aqueous cement composition and minimizing damage to formation permeability by said composition filtrate comprising mixing with said composition at least one polycationic polymer having a molecular weight of about 400 to 6,000,000 prior to treating said formation.

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