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2 013 435

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Application

5004683/03, 1991-07-19

(22)

Actual filing date

1991-07-19

(45)

Published

1994-05-30

(72)

Inventor

Chernjakhovskij A.I.Romanov V.V.Smol'Njakova T.A.Medvedeva G.N.Tolstova N.Ju.Petrenko V.A.Titova V.V.Davydova V.I.

(73)

Holder

Severo-Kavkazskij Nauchno-Issledovatel'Skij Institut Prirodnykh Gazov

DRILLING MUD Russian patent published in 1994 - IPC

Abstract RU 2013435 C1

FIELD: drilling of oil and gas wells. SUBSTANCE: the drilling mud comprises (wt % ): 3-10 clay; 1.5-2.5 a sodium salt of modified carboxymethyl cellulose; 0.9-1.1 sodium hydroxide; and water, the balance. The drilling mud comprises as modified carboxymethyl cellulose a sodium salt of carboxymethyl cellulose modified by aluminium and laprol. Laprol is a product of polycondensation of ethylene oxide with sodium sulfate. EFFECT: improved properties of the drilling mud. 2 tbl

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RU 2 013 435 C1

Authors

Chernjakhovskij A.I.

Romanov V.V.

Smol'Njakova T.A.

Medvedeva G.N.

Tolstova N.Ju.

Petrenko V.A.

Titova V.V.

Davydova V.I.

Dates

1994-05-30—Published

1991-07-19—Filed

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