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2 131 972

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IPC

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Application

98105909/03, 1998-03-25

(22)

Actual filing date

1998-03-25

(45)

Published

1999-06-20

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Inventor

(73)

Holder

Pozdnyshev Gennadij Nikolaevich

ACID SURFACTANT COMPOSITION FOR TREATMENT OF BOTTOM-HOLE ZONE Russian patent published in 1999 - IPC

Abstract RU 2131972 C1

FIELD: oil-producing industry. SUBSTANCE: acid surfactant composition contains, %: inhibited hydrochloric acid (in terms of HCl), 5.0-23.0; hydrofluoric acid, 2.0-10.0; nonionic surfactant, 1.0-5.0; solvent-resin-paraffin deposits, 5.0-25.0; water, the balance. Solvent is used in the form of fraction of aromatic hydrocarbons, for instance, toluene-xylol fraction or mixture of halogen derivative solvents. EFFECT: higher solving and detergency properties of composition with respect to asphalt-resin-paraffin and clay deposits. 2 cl, 1 tbl

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RU 2 131 972 C1

Authors

Dates

1999-06-20—Published

1998-03-25—Filed

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