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 33/13 (2006.01) C04B 28/08 (2006.01) C09K 8/14 (2006.01) C09K 8/20 (2006.01) C09K 8/22 (2006.01) C09K 8/24 (2006.01) C09K 8/46 (2006.01) E21B 3/00 (2006.01) E21B 7/20 (2006.01)

Patent

CA 2147487

An extended reach well such as the deviated wells typically drilled from offshore platforms is drilled using a drilling fluid comprising blast furnace slag and water which drilling fluid is circulated during the drilling to lay down a filter cake. Thereafter, an activator is added and generaly, an alkaline material and additional blast furnace slag, to produce a cementitious slurry which is passed down a casing and up into an annulus to effect primary cementing.

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