Process and composition for drilling shale formation in sea wate

Details Process and composition for drilling shale formation in sea wate Process and composition for drilling shale formation in sea wate

1973-10-10

1976-10-12

Guynn, Herbert B.

Compositions

Leather or fur treating

175 65, 252 85C, 260124R, C09K 702

Patent

active

039856674

ABSTRACT:
A process and composition for drilling a well through shale formation in sea water with an aqueous drilling mud comprising a clay -- sea water slurry containing a potassium salt of lignosulfonate. The lignosulfonate is prepared by reaction of potassium hydroxide or a salt of sulfurous acid with spent sulfite liquor at elevated temperatures. A particularly effective drilling composition also contains hydroxy acids and up to 4%, based on total solids content of the lignosulfonate, of an iron complex.

REFERENCES:
patent: 3007864 (1961-11-01), Adolphson et al.
patent: 3009874 (1961-11-01), Chisholm
patent: 3017351 (1962-01-01), Scott et al.
patent: 3171810 (1965-03-01), King et al.
patent: 3278425 (1966-10-01), King et al.
patent: 3318396 (1967-05-01), Tailleur
patent: 3505243 (1970-04-01), Steinberg et al.
O'Brien, Using Sea Water for Drilling Mud, Article in World Oil, May 1955, pp. 134, 138, 140, 144 and 146.

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