Drilling and completion fluid

Details Drilling and completion fluid Drilling and completion fluid

1987-05-26

1988-10-25

Guynn, Herbert B.

Compositions

Leather or fur treating

252 851, 252 8551, C09K 702

Patent

active

047802200

ABSTRACT:
A drilling mud comprises water, a gelling agent, a defoamer and at least 6% by volume of a glycerine selected from the group consisting of glycerine, polyglycerine and mixtures thereof. The drilling mud is normally prepared by adding to a pre-existing water based mud having therein the gelling agent, caustic soda, lignite and lignosulfonate. A completion fluid comprises water, a defoamer and at least 6% by volume of a glycerine selected from the group consisting of glycerine, polyglycerine and mixtures thereof.

REFERENCES:
patent: 2109858 (1938-03-01), Cannon
patent: 2191312 (1940-02-01), Cannon
patent: 2575276 (1951-11-01), Jacoby et al.
patent: 2589949 (1952-03-01), Meadors
patent: 2637692 (1953-05-01), Nahin
patent: 3236769 (1966-02-01), Burdyn et al.
patent: 3633689 (1972-01-01), Christman
patent: 3639233 (1972-02-01), Schultz
patent: 3728259 (1973-04-01), Christman
patent: 4033893 (1977-07-01), Mondshine
patent: 4464269 (1984-08-01), Walker
Gray et al, Composition and Properties of Oil Well Drilling Fluids, Fourth Ed., Pub. 1980, pp. 568 and 569.

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