CLAYLESS DRILLING MUD Russian patent published in 2003 - IPC

Abstract RU 2211238 C1

FIELD: oil and gas production. SUBSTANCE: clayless drilling mud for boring holes with abnormally high and abnormally low formation pressures contains, wt % polyacrylamide 0.1-0.45, sodium silicate1.0-2.0, chromium acetate (water loss regulator) 0.03-0.1, fresh water (additional component) 20-78, and mineralized water - the balance. EFFECT: improved performance characteristics and flocculation properties of drilling mud. 2 tbl

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RU 2 211 238 C1

Authors

Biljalov N.G.

Andirjakov V.F.

Mukhtarov I.F.

Dates

2003-08-27—Published

2002-10-16—Filed