METHOD OF PREPARING AQUEOUS DRILLING MUDS BASED ON CLAYS NON- AGGRESSIVE TO CLAYEY BEDS, AND TREATED CLAY Russian patent published in 1998 - IPC

Abstract RU 2111229 C1

FIELD: drilling fluids. SUBSTANCE: method consists in dispersing clay in aqueous solution containing needed amount of dispersing agent to liquefy drilling mud. Clay is then separated from aqueous solution containing non-adsorbed dispersing agent and thus treated clay is finally dispersed in water. EFFECT: improved procedure. 6 cl, 4 tbl

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RU 2 111 229 C1

Authors

Karminati Stefano[It]

Burrafato Dzhovanni[It]

Dates

1998-05-20—Published

1993-09-23—Filed