SU935602A1 - Method for waterproofing formation in well - Google Patents
Method for waterproofing formation in well Download PDFInfo
- Publication number
- SU935602A1 SU935602A1 SU782658693A SU2658693A SU935602A1 SU 935602 A1 SU935602 A1 SU 935602A1 SU 782658693 A SU782658693 A SU 782658693A SU 2658693 A SU2658693 A SU 2658693A SU 935602 A1 SU935602 A1 SU 935602A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- formation
- waterproofing
- well
- gelling agent
- effectiveness
- Prior art date
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Description
(S) СПОСОБ ГИДРОИЗОЛЯЦИИ ПЛАСТА В СКВАЖИНЕ(S) METHOD FOR WATER-INSULATING THE PLATE IN THE WELL
Изобретение относитс к нефтедобывающей промышленности, в частности к способам гидроизол ции водоносного пласта. Известен способ гидроизол ции плас та путем введени в пласт натриевой соли частично гидролизованногр полиакрилонитрила в виде 10-17% водного раствора, имеющего промьциленное назва ние гипан 1 . Однако данный способ не может быть применен дл гидроизол ции горизонтов содержащих пресные воды. Наиболее близким К предлагаемому вл етс способ гидроизол ции пласта в скважине путем последовательной закачки в пласт водных растворов гипана и гелеобразовател , например хлористо го кальци 2. Недостатком этого способа вл етс низка эффективность гидроизол ции пласта, обусловленного неравномерным распределением в пласте образующего осадка. Цель изобретени - повышение эффективности гидроизол ции пласта за счет обеспечени равномерного распределени образующегос в пласте осадка. Эта цель достигаетс тем, что в известном способе создани гидроизолирующего экрана, путем последовательной закачки в пласт водных растворов гипана и гелеобразовател , в качестве гелеобразовател используют сополимер метакриламида алки ированного диметилсульфатом и диэтил. миноэтилметакрилата со следующей структурной формулой: сн -с-сн сICH SO; I Х.О СН ° - 4-i4rHV имеющего техническое название амифлок. . При смешении указанных растворов в пористой среде происходит образоваThe invention relates to the oil industry, in particular to methods for hydroisolating an aquifer. A known method of hydroisolating a plate is by introducing into the formation a sodium salt of partially hydrolyzed polyacrylonitrile in the form of a 10-17% aqueous solution, which has a promiscule name Hypan 1. However, this method cannot be applied for waterproofing horizons containing fresh water. The closest K to the proposed is a method of hydroisolating the formation in the well by sequential injection into the formation of aqueous solutions of hypan and a gelling agent, such as calcium chloride 2. The disadvantage of this method is the low effectiveness of hydroisolation of the formation due to the uneven distribution of the forming sediment in the formation. The purpose of the invention is to increase the effectiveness of hydroisolation of the formation by ensuring uniform distribution of the sediment formed in the formation. This goal is achieved by the fact that in a known method of creating a waterproofing screen, by successively injecting aqueous solutions of hypane and a gelling agent into the formation, a copolymer of methacrylamide alkylated with dimethyl sulfate and diethyl is used as the gelling agent. minoethyl methacrylate with the following structural formula: cn-cn-cn IC SO; I X.O CH ° - 4-i4rHV having the technical name amiflock. . When mixing these solutions in a porous medium, the formation of
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU782658693A SU935602A1 (en) | 1978-09-04 | 1978-09-04 | Method for waterproofing formation in well |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU782658693A SU935602A1 (en) | 1978-09-04 | 1978-09-04 | Method for waterproofing formation in well |
Publications (1)
Publication Number | Publication Date |
---|---|
SU935602A1 true SU935602A1 (en) | 1982-06-15 |
Family
ID=20782960
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU782658693A SU935602A1 (en) | 1978-09-04 | 1978-09-04 | Method for waterproofing formation in well |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU935602A1 (en) |
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1978
- 1978-09-04 SU SU782658693A patent/SU935602A1/en active
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