RU2006143723A - METHOD FOR ALIGNING THE ACCESSIBILITY PROFILE IN EXPLOSIVE WELLS AND LIMITATION OF WATER SUPPLY IN EXTRACTING WELLS - Google Patents
METHOD FOR ALIGNING THE ACCESSIBILITY PROFILE IN EXPLOSIVE WELLS AND LIMITATION OF WATER SUPPLY IN EXTRACTING WELLS Download PDFInfo
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- RU2006143723A RU2006143723A RU2006143723/03A RU2006143723A RU2006143723A RU 2006143723 A RU2006143723 A RU 2006143723A RU 2006143723/03 A RU2006143723/03 A RU 2006143723/03A RU 2006143723 A RU2006143723 A RU 2006143723A RU 2006143723 A RU2006143723 A RU 2006143723A
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- rim
- water
- injection
- crosslinker
- wells
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- Compositions Of Macromolecular Compounds (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Polymerisation Methods In General (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
1. Способ выравнивания профиля приемистости в нагнетательных скважинах и ограничения водопритоков в добывающих скважинах, включающий приготовление и последовательную закачку в пласт полимерных гелеобразующих составов, отличающийся тем, что предварительно определяют объем закачки, закачивают первую оторочку полимерного состава в объеме 15% перового объема, в качестве первой оторочки используют состав на основе карбоксиметилцеллюлозы со сшивателем при следующем соотношении компонентов, мас.%: КМЦ - 0,3-5,0, ацетат хрома - 0,05-0,5, вода с минерализацией 0-290 г/л - остальное, причем для приготовления сшивателя используют воду с минерализацией 50-290 г/л, затем закачивают вторую оторочку порциями, чередующимися с закачкой воды с ПАВ и первой оторочкой, в качестве второй оторочки используют состав на основе полиакриламида со сшивателем при следующем соотношении компонентов, мас.%: ПАА - 0,01-2,0, ацетат хрома 0,05-0,5, вода с минерализацией 0-290 г/л - остальное, а затем останавливают скважину на технологическую выдержку продолжительностью от 1 до 5 сут.2. Способ по п.1, отличающийся тем, что суммарную массу концентрации второй оторочки определяют из соотношения оторочек и закачиваемой воды 1:0,5:0,5.3. Способ по п.1, отличающийся тем, что ПАА по сухому продукту составляет 0,5-40% от количества КМЦ.4. Способ по п.1, отличающийся тем, что для высокопроницаемых интервалов пласта, начиная, по крайней мере со второй оторочки, производят закачку регулируемого вязкоупругого состава, включающего полиакриламид, сшиватель, наполнитель и воду.1. The method of alignment of the injection profile in injection wells and limiting water inflows in producing wells, including the preparation and sequential injection of polymer gelling compositions into the formation, characterized in that the injection volume is preliminarily determined, the first rim of the polymer composition is pumped in a volume of 15% of the first volume, as the first rim use a composition based on carboxymethyl cellulose with a crosslinker in the following ratio of components, wt.%: CMC - 0.3-5.0, chromium acetate - 0.05-0.5, water with mineral 0–290 g / l - the rest, moreover, water with a salinity of 50–290 g / l is used to prepare the crosslinker, then the second rim is pumped in portions, alternating with the injection of water with a surfactant and the first rim, and the composition based on polyacrylamide is used as the second rim with a crosslinker in the following ratio of components, wt.%: PAA - 0.01-2.0, chromium acetate 0.05-0.5, water with a salinity of 0-290 g / l - the rest, and then stop the well for technological exposure lasting from 1 to 5 days. 2. The method according to claim 1, characterized in that the total concentration mass of the second rim is determined from the ratio of the rims and the injected water 1: 0.5: 0.5.3. The method according to claim 1, characterized in that the PAA for the dry product is 0.5-40% of the amount of CMC. 4. The method according to claim 1, characterized in that for highly permeable intervals of the formation, starting at least from the second rim, an adjustable viscoelastic composition is injected, including polyacrylamide, a crosslinker, a filler and water.
Claims (4)
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RU2006143723/03A RU2339803C2 (en) | 2006-12-08 | 2006-12-08 | Method for equalizing of intake capacity profile in pressure wells and of limiting inflow in producing wells |
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RU2006143723/03A RU2339803C2 (en) | 2006-12-08 | 2006-12-08 | Method for equalizing of intake capacity profile in pressure wells and of limiting inflow in producing wells |
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RU2006143723A true RU2006143723A (en) | 2008-06-20 |
RU2339803C2 RU2339803C2 (en) | 2008-11-27 |
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