Noncorroding water base drilling fluids and additive system for

Details Noncorroding water base drilling fluids and additive system for Noncorroding water base drilling fluids and additive system for

1972-10-16

1976-05-11

Padgett, Benjamin R.

Compositions

Leather or fur treating

252 85P, 252389R, C09K 700

Patent

active

039561429

ABSTRACT:
Water base drilling fluids having superior stability characteristics and having an improved noncorroding nature utilize an additive system comprising an alkali metal lignin, lignite, quebracho, and a water soluble chromium (VI) salt capable of introducing chromate ions into the alkaline water base mud system. An additive system having these four respective ingredients in a weight proportion of about 4:2:1:1 is admixed with a clay-water mixture to formulate the drilling fluid.

REFERENCES:
patent: 1999766 (1935-04-01), Lawton et al.
patent: 2605221 (1952-07-01), Hoeppel
patent: 2773031 (1956-12-01), Tailleur
patent: 2868726 (1959-01-01), Brukner et al.
patent: 3307625 (1967-03-01), Johnson et al.
patent: 3441504 (1969-04-01), Browning

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