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2 013 434

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Application

4941107/03, 1991-05-31

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Actual filing date

1991-05-31

(45)

Published

1994-05-30

(72)

Inventor

Sharipov A.U.Dolganskaja S.I.Zemtsova O.A.Rudomino M.V.Krutikova N.I.Kopejko E.G.

(73)

Holder

Zapadno-Sibirskij Nauchno-Issledovatel'Skij I Proektno-Konstruktorskij Institut Tekhnologii Glubokogo Razvedochnogo Burenija

DRILLING MUD Russian patent published in 1994 - IPC

Abstract RU 2013434 C1

FIELD: drilling of oil and gas wells. SUBSTANCE: the drilling mud comprises (wt % ): 0.1-0.3 deman which is polymethylmethacrylate modified by monoethanolamine; 0.02-0.06 amiphol which includes ammonite salts of hydrochloric, phosphorus, nitrilotrimethylphosphoric and methyliminodimethylphosphonic acids; 0.4-0.5 tall oil; and water, the balance. EFFECT: improved properties of the drilling mud. 1 tbl

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RU 2 013 434 C1

Authors

Sharipov A.U.

Dolganskaja S.I.

Zemtsova O.A.

Rudomino M.V.

Krutikova N.I.

Kopejko E.G.

Dates

1994-05-30—Published

1991-05-31—Filed

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