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2 539 058

(13)

(51)

IPC

C09K8/74(2006-01-01)

(21) (22)

Application

2013155435/03, 2013-12-12

(24)

Start date

2013-12-12

(22)

Actual filing date

2013-12-12

(45)

Published

2015-01-10

(72)

Inventor

Panikarovskij Evgenij ValentinovichKustyshev Denis AleksandrovichKustyshev Igor' AleksandrovichKustyshev Aleksandr Vasil'EvichKalimulina Larisa Borisovna

(73)

Holder

Federal'Noe Gosudarstvennoe Bjudzhetnoe Obrazovatel'Noe Uchrezhdenie Vysshego Professional'Nogo Obrazovanija Gosudarstvennyj Neftegazovyj Universitet"

COMPOSITION FOR CLAY CAKE REMOVAL FROM FACE ZONE OF LOW-PERMEABILITY TERRIGENOUS SEAM Russian patent published in 2015 - IPC C09K8/74

Abstract RU 2539058 C1

FIELD: oil-and-gas industry.

SUBSTANCE: composition for clay cake removal from face zone of low-permeability terrigenous seam contains the following elements in wt %: ammonium chloride - 20.0-60.0, mud acid - 6.0-12.0, acetic acid - 12-24, acetone-methanol solution or ethanol or isopropyl alcohol - 22-44.

EFFECT: higher efficiency of removal.

3 ex, 3 dwg

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RU 2 539 058 C1

Authors

Panikarovskij Evgenij Valentinovich

Kustyshev Denis Aleksandrovich

Kustyshev Igor' Aleksandrovich

Kustyshev Aleksandr Vasil'Evich

Kalimulina Larisa Borisovna

Dates

2015-01-10—Published

2013-12-12—Filed