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2 172 388

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Application

99117621/03, 1999-08-09

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Start date

1999-08-09

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Actual filing date

1999-08-09

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Published

2001-08-20

(72)

Inventor

Tronov V.P.Shireev A.I.Savel'Eva I.V.Tronov A.V.Ismagilov I.Kh.Gus'Kova I.A.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Tatarskij Nauchno-Issledovatel'Skij I Proektnyj Institut Nefti

METHOD OF OIL RECOVERY Russian patent published in 2001 - IPC

Abstract RU 2172388 C2

FIELD: oil producing industry, particularly, processes of oil recovery and control of paraffin accumulations in tubings. SUBSTANCE: internal surface of casing string and external surface of tubing string is subjected to heat insulation by formation of paraffin depositions on them. For this purpose, fluid is lifted through annular space for formation of heat-insulating layer. After formation of dense heat-insulating layer, well is changed over for lifting of recovered fluid through tubing string. EFFECT: higher efficiency of wells, reduced material expenditures in recovery of paraffin-base oils. 1 ex

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RU 2 172 388 C2

Authors

Tronov V.P.

Shireev A.I.

Savel'Eva I.V.

Tronov A.V.

Ismagilov I.Kh.

Gus'Kova I.A.

Dates

2001-08-20—Published

1999-08-09—Filed

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