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2 179 625

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IPC

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Application

2001111153/03, 2001-04-26

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Start date

2001-04-26

(22)

Actual filing date

2001-04-26

(45)

Published

2002-02-20

(72)

Inventor

Bikchantaeva N.V.Monakhova N.V.Aleshkina I.V.Khlebnikov V.N.Koltysheva T.N.Kovalenko P.V.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Institut Po Neftepromyslovoj Khimii"

COMPOSITION FOR PREVENTING CALCIUM DEPOSITS Russian patent published in 2002 - IPC

Abstract RU 2179625 C1

FIELD: petroleum-extracting industry, more particularly petroleum and gas industries. SUBSTANCE: composition comprises, wt %: oxyethylidene diphosphonic acid, 4-15; monoethanol-amine, 5-15; nitrilotrimethyl phosphonic acid, 15-25; hydroxy-containing compound, 25-30; and water, the balance. Invention makes it possible to attain high efficiency of prevention of calcium deposits at high coefficients of superrsaturation of mineralized water and retention of low solidification temperatures. EFFECT: improved properties of the composition. 1 tbl

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RU 2 179 625 C1

Authors

Bikchantaeva N.V.

Monakhova N.V.

Aleshkina I.V.

Khlebnikov V.N.

Koltysheva T.N.

Kovalenko P.V.

Dates

2002-02-20—Published

2001-04-26—Filed