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2 061 174

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C1

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IPC

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Application

95119992/03, 1995-12-01

(22)

Actual filing date

1995-12-01

(45)

Published

1996-05-27

(72)

Inventor

Mamedov B.A.Shakhverdiev A.Kh.Chukcheev O.A.Galeev F.Kh.Galljamov K.K.

(73)

Holder

Tovarishchestvo S Ogranichennoj Otvetstvennost'Ju Firma

METHOD FOR CLEANING WELL Russian patent published in 1996 - IPC

Abstract RU 2061174 C1

FIELD: oil production. SUBSTANCE: viscoelastic composition is pumped in well. Then it is crushed in stratum with forcing through liquid. Volume of forcing through liquid equal to well volume. Volume of viscoelastic composition is determined by the following formula: V = Kπ(R2-r2c

)mh, m3,, where k is coefficient taking into account maximum amount of capillaries in productive stratum filled with fluid (k = 0.2 - 0.5); R is radius of mud injection zone of the productive stratum (R = 1 - 2) m; rs is well radius, m; m is porosity of the productive stratum; h is depth of the productive well, m; Then depression is created in productive stratum zone. Precipitant is carried out of the productive stratum into the well and carry them onto the surface. EFFECT: high productivity of oil well. 6 cl, 1 dwg

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RU 2 061 174 C1

Authors

Mamedov B.A.

Shakhverdiev A.Kh.

Chukcheev O.A.

Galeev F.Kh.

Galljamov K.K.

Dates

1996-05-27—Published

1995-12-01—Filed

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