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US 5,058,679 AGranted
Solidification of water based muds
AssigneeShell Oil Company
InventorsArthur H. Hale, Kenneth M. Cowan
Life of this patent
Estimating the term…
Abstract
A drilling mud is converted in-situ to a cement by addition of blast furnace slag.
Claims14
A method for solidifying an aqueous drilling fluid in a borehole comprising:
- admixing blast furnace slag with the drilling fluid;
- displacing the drilling fluid to a preselected location in the borehole;
- and
- allowing the drilling fluid to solidify in-situ.
1 more element
Dependencies are inferred from the claim text.