DRILLING MUD FOR BORING LONG-TIME FROZEN ROCKS Russian patent published in 2002 - IPC

Abstract RU 2184756 C1

FIELD: drilling fluids. SUBSTANCE: low-cost drilling mud containing 5% bentonite clay powder, 0.005- 0.05% water-soluble polymer, and water show apparent-viscosity property, reduced permafrost-thaw ability even at positive temperatures and at low consumption of regents. EFFECT: improved working characteristics. 1 tbl

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RU 2 184 756 C1

Authors

Krylov G.V.

Kashkarov N.G.

Verkhovskaja N.N.

Konovalov E.A.

Usynin A.F.

Sokolovich A.V.

Lobanov F.I.

Minibaev V.V.

Bragina L.V.

Nasonova N.N.

Dates

2002-07-10Published

2001-02-20Filed