E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 33/13 (2006.01) C04B 24/00 (2006.01) C04B 24/16 (2006.01) C04B 24/26 (2006.01) C04B 24/28 (2006.01) C09K 8/24 (2006.01) C09K 8/42 (2006.01) C09K 8/46 (2006.01) C09K 7/00 (1990.01)
Patent
CA 2080906
A dispersant for spacer fluids, cement slurries, completion fluids and mixtures of drilling fluids and cement slurries used for drilling and cementing subterranean wells. the dispersant may be a polymer, wherein the polymer is hydroxypropyl acrylate-acrylic acid copolymer; sulfonated vinyl toluene-maleic anhydride copolymer; sulfonated vinyl toluene-maleic acid copolymer; sulfonated methyl polyacrylamide; sulfonated ethyl polyacrylamide; sulfonated phenyl polyacrylamide; a copolymer of ethylenic acids, acrylamides acid ethylenic esters of phosphoric acid; acrylic acid polymers; acrylamide polymers; sulfonated copolymers of acrylic acid and acrylamide; phosphonated copolymers of acrylic acid and acrylamide; or sulfonated and phosphonated copolymers of acrylic acid and acrylamide.
Bloys James B.
Bradshaw Roger D.
Carpenter Robert B.
Malachosky Edward
Wilson William N.
Atlantic Richfield Company
Osler Hoskin & Harcourt Llp
LandOfFree
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