RU2008135478A - METHOD FOR GAS-ACID INTENSIFICATION OF OIL FLUID FROM RESERVOIR AND EXPLOSIVE OIL WELLS - Google Patents
METHOD FOR GAS-ACID INTENSIFICATION OF OIL FLUID FROM RESERVOIR AND EXPLOSIVE OIL WELLS Download PDFInfo
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- RU2008135478A RU2008135478A RU2008135478/03A RU2008135478A RU2008135478A RU 2008135478 A RU2008135478 A RU 2008135478A RU 2008135478/03 A RU2008135478/03 A RU 2008135478/03A RU 2008135478 A RU2008135478 A RU 2008135478A RU 2008135478 A RU2008135478 A RU 2008135478A
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Gas Separation By Absorption (AREA)
Abstract
1. Способ газо-кислотной интенсификации притока нефти из пласта добывающих и нагнетательных нефтяных скважин, включающий закачку химреагента через скважину в зону продуктивного пласта, проведение технологической выдержки, удаление отработанного раствора химреагентов, отличающийся тем, что при открытой затрубной задвижке в объем насосно-компрессорной трубы скважины подают в режиме циркуляции кислотный пенообразующий состав в расчете 0,3-2,5 м3 на метр перфорированной мощности пласта, затем через 20-60 с начинают подачу газообразного нейтрального газа под давлением 100-650 кгс/см2 и производительностью подачи нейтрального газа 100-1200 м3/ч, причем пусковое давление нейтрального газа предварительно рассчитывают по формуле: ! ! где h - глубина погружения труб под статический уровень, м, ! p - плотность жидкости, т/м3, ! g - ускорение силы тяжести, м/сек2, ! D - внутренний диаметр эксплуатационной колонны, мм, ! d - внутренний диаметр подъемных труб, мм, ! расстояние от устья скважины до места установки первого клапана рассчитывают по формуле: !! где L - расстояние от устья скважины до места установки первого клапана, м, ! h ст - расстояние от устья скважины до статического уровня, м, ! Pmax - максимальное давление нейтрального газа, МПа, ! ρ - плотность жидкости, т/м3, ! максимальное давление нейтрального газа рассчитывают с учетом глубины установки пускового клапана по формуле: ! ! где Рmax - максимальное давление нейтрального газа, МПа, ! ρ - плотность жидкости, т/м3, ! g - ускорение силы тяжести, м\сек2, ! D - внутренний диаметр эксплуатационной колонны, мм, ! d - внутренний диаметр подъемных труб, мм, ! L - расстояние от устья скважины до места установки перво1. The method of gas-acid intensification of oil flow from the reservoir of producing and injection oil wells, including the injection of a chemical reagent through a well into a zone of a productive formation, technological exposure, removal of the spent chemical solution, characterized in that when the annular valve is open into the volume of the tubing wells feed an acidic foaming composition in a circulation mode, calculated at 0.3-2.5 m3 per meter of perforated reservoir power, then after 20-60 s the flow of gaseous neutron pressurized gas ceiling elements 100-650 kgf / cm2 and the output of feed neutral gas 100-1200 m3 / h, the starting pressure of the neutral gas pre-calculated according to the formula: ! where h is the immersion depth of the pipes under the static level, m,! p - fluid density, t / m3,! g - acceleration of gravity, m / s2,! D is the inner diameter of the production string, mm,! d is the inner diameter of the lifting pipes, mm,! the distance from the wellhead to the installation site of the first valve is calculated by the formula: !! where L is the distance from the wellhead to the installation location of the first valve, m,! h article - the distance from the wellhead to the static level, m,! Pmax - maximum pressure of a neutral gas, MPa,! ρ is the fluid density, t / m3,! the maximum neutral gas pressure is calculated taking into account the installation depth of the start valve according to the formula:! ! where Рmax is the maximum pressure of a neutral gas, MPa,! ρ is the fluid density, t / m3,! g is the acceleration of gravity, m \ sec2,! D is the inner diameter of the production string, mm,! d is the inner diameter of the lifting pipes, mm,! L is the distance from the wellhead to the installation site first
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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RU2008135478/03A RU2391499C2 (en) | 2008-09-03 | 2008-09-03 | Method of gas-acidic oil inflow stimulation in oil extraction and injection well bed |
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RU2008135478/03A RU2391499C2 (en) | 2008-09-03 | 2008-09-03 | Method of gas-acidic oil inflow stimulation in oil extraction and injection well bed |
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RU2008135478A true RU2008135478A (en) | 2010-03-10 |
RU2391499C2 RU2391499C2 (en) | 2010-06-10 |
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RU2008135478/03A RU2391499C2 (en) | 2008-09-03 | 2008-09-03 | Method of gas-acidic oil inflow stimulation in oil extraction and injection well bed |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113898303A (en) * | 2020-07-06 | 2022-01-07 | 中国石油化工股份有限公司 | Oil well acidification flowback negative pressure hollowing process method |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102587865B (en) * | 2012-02-29 | 2013-09-25 | 西南石油大学 | Foam drainage gas recovery method for natural gas horizontal well |
DK2841525T3 (en) | 2012-04-27 | 2018-12-03 | Akzo Nobel Chemicals Int Bv | FOAM OR VISCOSIFIED COMPOSITION CONTAINING A CHELING AGENT |
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2008
- 2008-09-03 RU RU2008135478/03A patent/RU2391499C2/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113898303A (en) * | 2020-07-06 | 2022-01-07 | 中国石油化工股份有限公司 | Oil well acidification flowback negative pressure hollowing process method |
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RU2391499C2 (en) | 2010-06-10 |
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Effective date: 20140904 |