Wells – Processes – Cementing – plugging or consolidating
Patent
1993-02-25
1994-07-19
Suchfield, George A.
Wells
Processes
Cementing, plugging or consolidating
175 65, E21B 3314
Patent
active
053300068
ABSTRACT:
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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Cowan Kenneth M.
Nahm James J. W.
Wyant Reece E.
Shell Oil Company
Suchfield George A.
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