Oil deposit development method involves drilling production and injection wells, pumping a displacement agent through injection wells
	DANILOV D S; HABIPOV R M; MIRONOVA L M
	2024-07-09
专利权人	TATNEFT STOCK CO (TATN-Non-standard)
申请日期	2024-07-09
专利号	RU2832416-C1
成果简介	NOVELTY - Invention relates to oil industry and can be used in development of oil deposit of formation type in terrigenous and/or carbonate reservoirs with low-permeability reservoir and/or high viscosity of oil. Disclosed is a method of developing an oil deposit, which involves drilling production and injection wells, pumping a displacement agent through injection wells and production through production wells. Structural maps and oil-saturated thicknesses are plotted, zones with low- and/or low-permeability reservoir and/or high viscosity of oil are identified, hydrodynamic investigations are carried out, flow rate, initial formation pressure Pinit and oil viscosity are measured in the selected zones. At reduction of formation pressure in production wells in these zones to 70% of initial pressure in injection wells in lower parts of structure, drilled at average depth of productive formation, in which oil production is controlled, injection of carbon dioxide gas – CO2 is performed. CO2 injection is continued until reaching pressure of 1.1⋅Pinit. After that CO2 injection is stopped, process exposure is performed for uniform CO2 distribution along the front and reduction of viscosity of displaced fluid by 20-25% from the value at the beginning of development. Then, production is carried out from production wells located according to the approved grid at least by 100 m of injection wells at bottomhole pressure not lower than saturation pressure in the formation. Oil production and viscosity are measured, oil recovery factor is calculated in the first row of production wells, and at reduction of formation pressure in them to the initial one, the CO2 injection cycle is repeated. USE - Oil industry. ADVANTAGE - Increased oil recovery from low-permeability reservoir. 1 cl
IPC 分类号	E21B-043/16
国家	俄罗斯
专业领域	化学化工
语种	英语
成果类型	专利
文献类型	科技成果
条目标识符	http://119.78.100.226:8889/handle/3KE4DYBR/15897
专题	中国科学院新疆生态与地理研究所
作者单位	TATNEFT STOCK CO (TATN-Non-standard)
推荐引用方式 GB/T 7714	DANILOV D S,HABIPOV R M,MIRONOVA L M. Oil deposit development method involves drilling production and injection wells, pumping a displacement agent through injection wells. RU2832416-C1[P]. 2024.

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