DRILLING MUD Russian patent published in 2001 - IPC

Abstract RU 2173693 C1

FIELD: drilling of wells, more particularly compositions based on aqueous drilling muds. SUBSTANCE: drilling mud comprises, wt.%: clay, 0.2; acrylic polymer as water loss reducing agent, 0.04-0.05; nitrilotrimethylphosphosphonic acid, 0.001-0.002; and water, the balance. EFFECT: more efficient, stable and cheaper resulting muds. 1 tbl

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RU 2 173 693 C1

Authors

Fomicheva G.V.

Dates

2001-09-20—Published

2000-11-28—Filed