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2 091 420

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(51)

IPC

(21) (22)

Application

95100926/03, 1995-01-17

(22)

Actual filing date

1995-01-17

(45)

Published

1997-09-27

(72)

Inventor

Fabrichnaja A.L.Shamraj Ju.V.Shakirzjanov R.G.Sadriev Z.Kh.Koshelev V.N.Vakhrushev L.P.Tavrin A.E.

(73)

Holder

Tovarishchestvo S Ogranichennoj Otvetstvennost'Ju Tsentr

DRILLING MUD ADDITIVE Russian patent published in 1997 - IPC

Abstract RU 2091420 C1

FIELD: oil and gas production. SUBSTANCE: additive contains ethylene and propylene oxide-glycerol or ethylenediamine addition product or ethylene oxide-fatty amine or fatty alcohol adduct; methyldiethylalkoxymethylammonium methylsulfate or bis(alkylpolyoxyethylene) phosphate; and solvent. EFFECT: improved performance characteristics. 2 tbl

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RU 2 091 420 C1

Authors

Fabrichnaja A.L.

Shamraj Ju.V.

Shakirzjanov R.G.

Sadriev Z.Kh.

Koshelev V.N.

Vakhrushev L.P.

Tavrin A.E.

Dates

1997-09-27—Published

1995-01-17—Filed

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