Clay stabilizing agent preparation and use

Details Clay stabilizing agent preparation and use Clay stabilizing agent preparation and use

E - Fixed Constructions

21

B

31/22, 402/320

E21B 43/25 (2006.01) C09K 8/14 (2006.01) C09K 8/60 (2006.01)

Patent

CA 1275345

Abstract of the Disclosure Methods of preparing and using a clay stabilizing agent are provided. The agent is prepared by polymerizing dial lyldimethylammonium chloride with sulfur dioxide in the pre- sence of a polymerization reaction rate retarder to form a solid cationic copolymer having a high sulfur content. When dissolved in an aqueous carrier fluid, the copolymer is par- ticularly effective in preventing clay swelling and/or fines migration.

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