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US 5,407,909 AGranted
Earth support fluid composition and method for its use
AssigneeKB Technologies, Ltd.
InventorsK. Gifford Goodhue, Jr., Max M. Holmes
Life of this patent
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Abstract
This invention relates to a method for preparing and earth stabilization fluid, a method for using such an earth stabilization fluid and to the earth stabilization fluid itself. This invention uses a continuous phase that has been added to a borehole and a polymer material that forms gel masses having desired functional properties when added to the continuous phase.
Claims9
A method for the preparation and use of an earth stabilization fluid comprising:
- a) adding an aqueous based continuous phase into an earth cavity;
- b) adding an anionic polyacrylamide co-polymer having a charge density functionally effective to facilitate excavation of said earth cavity, said polymer forming a plurality of transitory, deformable masses in said continuous phase;
- and
- c) excavating to enlarge said cavity while a portion of said polymer is in a transitory partially-hydrated swollen state.
1 more element
Dependencies are inferred from the claim text.