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

E - Fixed Constructions

21

B

E21B 33/14 (2006.01) C04B 24/16 (2006.01) C04B 24/22 (2006.01) C04B 24/26 (2006.01) C04B 28/02 (2006.01) C04B 38/10 (2006.01) C09K 8/46 (2006.01) E21B 33/13 (2006.01)

Patent

CA 2334521

The present invention provides improved methods of 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 having a short transition time comprised of hydraulic cement, a water reducing additive, a dispersing additive, a compressive strength enhancing and set retarding additive, a set accelerating additive and water, placing the cement composition in the annulus between the casing string and the well bore and allowing the cement composition to set into a hard impermeable mass.

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