Cementing casing strings in deep water offshore wells

Details Cementing casing strings in deep water offshore wells Cementing casing strings in deep water offshore wells

C - Chemistry, Metallurgy

04

B

C04B 28/04 (2006.01) C04B 28/02 (2006.01) C04B 40/00 (2006.01) C09K 8/46 (2006.01) E21B 33/138 (2006.01) E21B 33/14 (2006.01)

Patent

CA 2372876

The present invention provides improved compositions and methods for cementing casing strings in deep water offshore formations penetrated by well bores. The methods are basically comprised of the steps of preparing a cement composition comprised of hydraulic cement, water, an environmentally degradable water reducing and dispersing additive, an environmentally degradable set retarding additive and an environmentally degradable compressive strength and set accelerating additive.

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