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2 165 013

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C1

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Application

99119193/03, 1999-09-01

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Start date

1999-09-01

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Actual filing date

1999-09-01

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Published

2001-04-10

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Inventor

Starkova N.R.Sharifullin F.A.Brilliant L.S.Gordeev A.O.Kurakin V.I.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Innovatsionnaja Neftjanaja Korporatsija"

METHOD OF TREATING TERRIGENOUS AND CLAY OIL RESERVOIRS Russian patent published in 2001 - IPC

Abstract RU 2165013 C1

FIELD: oil and gas production. SUBSTANCE: method involves preliminarily injecting into formation light petroleum-processing fractions supplemented by 0.5-1.0% of oil-soluble surfactant, subsequently injecting acid system, forcing it into formation by crude oil, and process pause allowing interaction of reagents with formation minerals. Aqueous acid system contains 7-10% orthophosphoric acid and 1-4% hydrofluoric acid. EFFECT: extended formation treatment coverage and restored and increased natural permeability of oil reservoirs. 2 tbl

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RU 2 165 013 C1

Authors

Starkova N.R.

Sharifullin F.A.

Brilliant L.S.

Gordeev A.O.

Kurakin V.I.

Dates

2001-04-10—Published

1999-09-01—Filed

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