Drilling and cementing a well

Details Drilling and cementing a well 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 8/46 (2006.01) E21B 3/00 (2006.01) E21B 7/20 (2006.01) E21B 33/14 (2006.01)

Patent

CA 2147492

A slim hole well 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 generally, 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 ce- menting.

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