Well cementing process and gasified cement useful therein

Details Well cementing process and gasified cement useful therein Well cementing process and gasified cement useful therein

C - Chemistry, Metallurgy

04

B

31/14

C04B 7/345 (2006.01) C04B 24/12 (2006.01) C04B 28/02 (2006.01) C09K 8/46 (2006.01) E21B 33/14 (2006.01)

Patent

CA 1217323

ABSTRACT A composition for a method of cementing sub- terranean formations. The cementing composition compri- ses hydraulic cement, a nitrogen gas generating material, an oxidizing agent, and a reation rate control material. The concentration of the nitrogen gas generating material is correlated with the pressure and temperature of the cement zone to be cemented so that the flow of gas from the formation into the borehole is suppressed or controlled. -38-

453007

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