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Application

99106573/03, 1999-03-30

(24)

Start date

1999-03-30

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Actual filing date

1999-03-30

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Published

2001-05-10

(72)

Inventor

Starshov M.I.Sitnikov N.N.Krupin S.V.

(73)

Holder

Ooo

METHOD OF TREATMENT OF BOTTOM-HOLES OF WELLS PRODUCING HEAVY OILS AND NATIVE BITUMENS Russian patent published in 2001 - IPC

Abstract RU 2166624 C2

FIELD: oil producing industry industry, particularly, methods of treatment of bottom-hole zones of producing wells whose production rate drops due to colmatage with clay particles and accumulations of asphaltene-resin-paraffin components. SUBSTANCE: method includes injection of hydrocarbon fluid, forcing of this fluid into formation, leaving it in bottom-hole zone to stand for some time, and withdrawal of dissolved products. Hydrocarbon fluid is used in the form of fraction of alpha olefins treated with hydrogen peroxide in mole ratio of 0.1-0.5:1.0. Fraction of alpha-olefins has carbon molecular formula C6-C20 and with distillation temperature of 70-300 C. EFFECT: increased permeability of treated interval of formation complicated with asphaltene-resin-paraffin accumulations. 1 tbl, 1 ex

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RU 2 166 624 C2

Authors

Starshov M.I.

Sitnikov N.N.

Krupin S.V.

Dates

2001-05-10—Published

1999-03-30—Filed

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