Low fluid loss cement compositions, fluid loss reducing...

E - Fixed Constructions – 21 – B

Patent

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E21B 33/13 (2006.01) C04B 24/20 (2006.01) C04B 24/28 (2006.01) C04B 28/02 (2006.01) C09K 8/46 (2006.01)

Patent

CA 2102040

Abstract of the Disclosure Improved liquid fluid loss reducing additives, well cement compositions containing the additives and methods of using the compositions are provided by this invention. The liquid fluid loss reducing additives are basically comprised of water, polyethylene imine, an alkali metal salt of alkylbenzene sulfonic acid and an alkali metal salt of naphthalene sulfonic acid condensed with formaldehyde.

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