RU95103352A - Method of equalization of injectivity profile of injection wells - Google Patents

Method of equalization of injectivity profile of injection wells

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Publication number
RU95103352A
RU95103352A RU95103352/03A RU95103352A RU95103352A RU 95103352 A RU95103352 A RU 95103352A RU 95103352/03 A RU95103352/03 A RU 95103352/03A RU 95103352 A RU95103352 A RU 95103352A RU 95103352 A RU95103352 A RU 95103352A
Authority
RU
Russia
Prior art keywords
water
potassium
calcium chloride
sodium
equalization
Prior art date
Application number
RU95103352/03A
Other languages
Russian (ru)
Other versions
RU2087698C1 (en
Inventor
В.С. Антипов
Л.С. Бриллиант
Н.Р. Старкова
Original Assignee
Открытое акционерное общество Нефтяная компания "ПРИОРИТЕТ"
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Открытое акционерное общество Нефтяная компания "ПРИОРИТЕТ" filed Critical Открытое акционерное общество Нефтяная компания "ПРИОРИТЕТ"
Priority to RU95103352A priority Critical patent/RU2087698C1/en
Publication of RU95103352A publication Critical patent/RU95103352A/en
Application granted granted Critical
Publication of RU2087698C1 publication Critical patent/RU2087698C1/en

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  • Soil Conditioners And Soil-Stabilizing Materials (AREA)

Abstract

FIELD: oil producing industry. SUBSTANCE: method of equalization of infectivity profile of injection wells includes successive injection into formation of two compounds of different consistences. Precipitating agent is injected in form of sodium (potassium) silicate, calcium chloride, sodium chloride and water, and gel-forming compound is injected in form of sodium (potassium) silicate, calcium chloride and water. EFFECT: higher oil recovery from formation, reduced water cutting of oil due to isolation of fractured washed zones and pivotally permeable formations and increased filtration resistance of intervals with medium permeability. 3 cl, 3 tbl

Claims (1)

Изобретение относится к нефтедобывающей промышленности и позволяет повысить нефтеотдачу пласта и снизить обводненность добываемой нефти за счет изоляции трещиноватых промытых зон и высокопроницаемых пластов и увеличения фильтрационного сопротивления интервалов со средней проницаемостью. Сущность изобретения: способ включает последовательную закачку в пласт двух составов различной консистенции, при этом в качестве осадкообразующего состава закачивают состав, содержащий силикат натрия (калия), хлорид кальция, хлорид натрия и воду, а в качестве гелеобразующего состава закачивают состав, содержащий силикат натрия (калия), хлорид кальция и воду.The invention relates to the oil industry and allows to increase oil recovery and reduce water cut of produced oil by isolating fractured washed zones and highly permeable formations and increasing the filtering resistance of intervals with medium permeability. The inventive method includes the sequential injection into the reservoir of two compositions of different consistencies, while the composition containing sodium silicate (potassium), calcium chloride, sodium chloride and water is pumped as a sediment-forming composition, and the composition containing sodium silicate is pumped as a gelling composition ( potassium), calcium chloride and water.
RU95103352A 1995-03-07 1995-03-07 Method for levelling injectivity profile of injection wells RU2087698C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU95103352A RU2087698C1 (en) 1995-03-07 1995-03-07 Method for levelling injectivity profile of injection wells

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU95103352A RU2087698C1 (en) 1995-03-07 1995-03-07 Method for levelling injectivity profile of injection wells

Publications (2)

Publication Number Publication Date
RU95103352A true RU95103352A (en) 1996-12-20
RU2087698C1 RU2087698C1 (en) 1997-08-20

Family

ID=20165463

Family Applications (1)

Application Number Title Priority Date Filing Date
RU95103352A RU2087698C1 (en) 1995-03-07 1995-03-07 Method for levelling injectivity profile of injection wells

Country Status (1)

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RU (1) RU2087698C1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2661973C2 (en) * 2016-05-05 2018-07-23 Государственное бюджетное образовательное учреждение высшего образования "Альметьевский государственный нефтяной институт" Method of leveling injectivity profile of injection wells and limiting water inflow to production wells

Also Published As

Publication number Publication date
RU2087698C1 (en) 1997-08-20

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