Method of well drilling and composition therefor

Details Method of well drilling and composition therefor Method of well drilling and composition therefor

1973-06-11

1976-10-19

Guynn, Herbert B.

Compositions

Leather or fur treating

175 65, 175 72, 252 85C, C09K 702

Patent

active

039869644

ABSTRACT:
A non-damaging well drilling fluid contains a polysaccharide, a lignosulfonate, chrome sulfate, a pH modifier and, preferably, graded calcium carbonate and starch. The fluid is effective to seal off the well bore essentially immediately and is non-damaging in that it causes little permanent plugging of the formation by loss of the drilling fluid solids to the formation.

REFERENCES:
patent: 3243000 (1966-03-01), Patton et al.
patent: 3319715 (1967-05-01), Parks
patent: 3699042 (1972-10-01), Browning et al.

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