RU2013120150A - METHOD FOR LARGE-VOLUME SELECTIVE ACID TREATMENT (BSC) OF PRODUCING WELLS IN CARBONATE COLLECTORS - Google Patents
METHOD FOR LARGE-VOLUME SELECTIVE ACID TREATMENT (BSC) OF PRODUCING WELLS IN CARBONATE COLLECTORS Download PDFInfo
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Abstract
1. Способ большеобъемной селективной кислотной обработки (БСКО) добывающих скважин в карбонатных коллекторах, включающий закачку в скважину оторочки кислотного состава с определенным расходом, отличающийся тем, что дополнительно закачивают нелинейно-вязкую отклоняющую жидкость - отклонитель перед и/или после оторочки кислотного состава; причем закачку кислотного состава осуществляют с оптимальным расходом и оптимальным соотношением объема отклонителя к объему кислотного состава, которые определяют математическим моделированием процесса БСКО с учетом изменения устьевого и забойного давления, типа кислотного состава, типа отклонителя, пористости и проницаемости породы, при этом кислотный состав закачивают с удельным объемом 1,5-3 мна 1 м нефтенасыщенного интервала, а объем отклонителя определяют в зависимости от неоднородности среды и с учетом указанного удельного объема кислотного состава.2. Способ по п.1, отличающийся тем, что кислотный состав закачивают несколькими оторочками, а отклонитель закачивают перед, и/или после, и/или между оторочками кислотного состава.1. The method of large-volume selective acid treatment (BSCF) of production wells in carbonate reservoirs, which includes injecting the rims of the acid composition at a certain flow rate into the well, characterized in that it additionally injects a nonlinearly viscous deflecting liquid — a deflector before and / or after the rim of the acid composition; moreover, the acid composition is injected with the optimal flow rate and the optimal ratio of the divergent volume to the acid composition volume, which are determined by mathematical modeling of the BSCO process taking into account changes in wellhead and bottomhole pressure, type of acid composition, type diverter, porosity and permeability of the rock, while the acid composition is pumped with specific volume of 1.5-3 mn 1 m oil-saturated interval, and the deflector volume is determined depending on the heterogeneity of the medium and taking into account the specified specific volume ma sostava.2 acid. The method according to claim 1, characterized in that the acid composition is pumped into several rims, and the diverter is pumped before, and / or after, and / or between the rims of the acid composition.
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RU2013120150/03A RU2547850C2 (en) | 2013-05-06 | 2013-05-06 | Large-volume selective acid treatment (lvsat) for producers in carbonate reservoirs |
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RU2013120150/03A RU2547850C2 (en) | 2013-05-06 | 2013-05-06 | Large-volume selective acid treatment (lvsat) for producers in carbonate reservoirs |
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RU2013120150A true RU2013120150A (en) | 2014-11-20 |
RU2547850C2 RU2547850C2 (en) | 2015-04-10 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN117054284A (en) * | 2023-10-12 | 2023-11-14 | 西南石油大学 | Acid rock reaction rate prediction device and method |
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CN104975840B (en) * | 2015-06-18 | 2018-02-23 | 中国石油化工股份有限公司 | A kind of spontaneous compound acid fracturing method of acid for high temperature deep well carbonate reservoir |
RU2600137C1 (en) * | 2015-07-13 | 2016-10-20 | Публичное акционерное общество "Татнефть" имени В.Д. Шашина (ПАО "Татнефть" им. В.Д. Шашина) | Method of process well treatment |
RU2750776C1 (en) * | 2020-08-18 | 2021-07-02 | Общество с ограниченной ответственностью Сервисная Компания "Карат" | Method for large-volume selective acid treatment of bottomhole formation zone in carbonate reservoirs |
RU2750171C1 (en) * | 2020-08-18 | 2021-06-22 | Общество с ограниченной ответственностью Сервисная Компания "Карат" | Method for large-volume selective acid treatment of bottomhole formation zone in carbonate reservoirs |
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SU1309645A1 (en) * | 1985-03-05 | 1995-03-27 | Татарский Государственный Научно-Исследовательский И Проектный Институт Нефтяной Промышленности | Method of oil stratum critical zone treatment |
US4807703A (en) * | 1987-08-19 | 1989-02-28 | Mobil Oil Corporation | Fracture acidizing sandstone formations |
SU1624134A1 (en) * | 1989-02-27 | 1991-01-30 | Татарский Государственный Научно-Исследовательский И Проектный Институт Нефтяной Промышленности | Method for treatment of carbonate producing formation |
RU2084621C1 (en) * | 1995-09-08 | 1997-07-20 | Акционерное общество открытого типа "Удмуртнефть" | Method for treating bottom-hole zone of injection well |
RU2151855C1 (en) * | 1999-12-29 | 2000-06-27 | Чикин Андрей Егорович | Well operation method |
RU2208150C1 (en) * | 2002-10-24 | 2003-07-10 | Общество с ограниченной ответственностью "Конструкторское бюро буровых технологий" | Method of bottomhole zone treatment |
US7148184B2 (en) * | 2003-07-22 | 2006-12-12 | Schlumberger Technology Corporation | Self-diverting foamed system |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN117054284A (en) * | 2023-10-12 | 2023-11-14 | 西南石油大学 | Acid rock reaction rate prediction device and method |
CN117054284B (en) * | 2023-10-12 | 2023-12-22 | 西南石油大学 | Acid rock reaction rate prediction device and method |
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