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2 013 529

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C1

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IPC

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Application

5007752/03, 1991-09-03

(22)

Actual filing date

1991-09-03

(45)

Published

1994-05-30

(72)

Inventor

Pozdeev O.V.Glushchenko V.N.Usenko Ju.N.

(73)

Holder

Permskij Gosudarstvennyj Nauchno-Issledovatel'Skij I Proektnyj Institut Neftjanoj Promyshlennosti

COMPOSITION FOR ACID TREATMENT OF BOTTOM-HOLE REGION Russian patent published in 1994 - IPC

Abstract RU 2013529 C1

FIELD: oil producing industry. SUBSTANCE: composition contains (in % by mass): technical-grade lignosulfonates of ammonium neutralization form 10-30; glycols or glycerin 10- 15; 30-50% solution of hydrofluoric acid 2-15; 12-15% solution of hydrochloric acid 40-78. EFFECT: improved properties. 2 tbl

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RU 2 013 529 C1

Authors

Pozdeev O.V.

Glushchenko V.N.

Usenko Ju.N.

Dates

1994-05-30—Published

1991-09-03—Filed

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