CLAYLESS HIGH-MINERALIZED LIQUID FOR REPAIR-RESTORATION WORK PERFORMING Russian patent published in 1995 - IPC

Abstract RU 2028362 C1

FIELD: drilling. SUBSTANCE: liquid has, wt.-%: potassium nitrate 30-46; lignosulfonate 10-18; urea 5-8, and water - the rest. Liquid shows low filtration values, its technological properties were retained. EFFECT: enhanced quality of liquid proposed. 1 tbl

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RU 2 028 362 C1

Authors

Shmel'Kov V.E.

Lipchanskaja T.A.

Ehjsmont E.A.

Dates

1995-02-09—Published

1990-08-20—Filed