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2 587 203

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IPC

E21B43/24(2006-01-01)

E21B43/22(2006-01-01)

C09K8/524(2006-01-01)

(21) (22)

Application

2015112771/03, 2015-04-07

(24)

Start date

2015-04-07

(22)

Actual filing date

2015-04-07

(45)

Published

2016-06-20

(72)

Inventor

Mamykin Anton AleksandrovichMullagalin Ilyas ZakhibovichKharisov Rinat Yamigannurovich

(73)

Holder

Ooo Nauchno-Tekhnicheskij Tsentr"

METHOD FOR THERMOCHEMICAL TREATMENT OF BOTTOMHOLE FORMATION ZONE Russian patent published in 2016 - IPC E21B43/24 E21B43/22 C09K8/524 

Abstract RU 2587203 C1

FIELD: oil and gas industry.

SUBSTANCE: method for thermochemical treatment of a bottom hole formation zone involves pumping to the well bottom of two water solutions. First solution contains, MP: ammonium nitrate NH4NO3 48-54; citric acid - C6H8O7 2.9-3.4; sodium carbonate Na2CO3 2.3-3.0; fresh water-the rest. Second solution contains, MP: sodium nitrite NaNO2 40-45; fresh water-the rest. Pumping of the above solutions is carried out in parallel or in series in volumes, providing the stoichiometric reaction of sodium nitrite with ammonium nitrate and citric acid.

EFFECT: efficient removal of asphaltene-resin and paraffin deposits due to extraction of a large amount of heat without formation during chemical conversions of hardly soluble compounds and reaction products that cause corrosion of oil field equipment; used components enter into chemical reaction under standard conditions (T=20 °C, P=101 kPa).

1 cl, 4 tbl, 1 dwg

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RU 2 587 203 C1

Authors

Mamykin Anton Aleksandrovich

Mullagalin Ilyas Zakhibovich

Kharisov Rinat Yamigannurovich

Dates

2016-06-20—Published

2015-04-07—Filed

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