Fluid loss additive for cement

Details Fluid loss additive for cement Fluid loss additive for cement

E - Fixed Constructions

21

B

31/22

E21B 33/14 (2006.01) C04B 24/16 (2006.01) C09K 8/46 (2006.01)

Patent

CA 1217039

PATENT APPLICATION entitled : Improved fluid loss additive for cement. ABSTRACT OF THE DISCLOSURE An aqueous solution of a terpolymer, useful as fluid loss agent for drilling muds and not for cement slurries, is treated with acid and heat. An excellent fluid loss agent for cement is obtained. Very efficient liquid additive, for all pur- poses, which does not modify either the rheology, nor substantially the setting time.

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