Method for drilling and cementing a well

Details Method for drilling and cementing a well Method for drilling and cementing a well

E - Fixed Constructions

21

B

E21B 33/14 (2006.01) C04B 28/08 (2006.01) C09K 8/46 (2006.01) E21B 33/13 (2006.01)

Patent

CA 2156856

A cementitious slurry containing blast furnace slag and a surfactant is utilized to displace an oil based drilling fluid without causing contamination by the blast furnace slag cement. In a specific embodiment, a cementitious slurry comprising blast furnace slag, a surfactant and water is used in the cementing of an annulus surrounding a casing or liner wherein a synthetic oil-containing drilling fluid is present.

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