渤海湾盆地大陆性页岩油藏生产性能分析

IF 4.2 Q2 ENERGY & FUELS
Quansheng Guan , Changwei Chen , Xiugang Pu , Yonggang Wan , Jing Xu , Haiwei Zeng , Chen Jia , Huanhuan Gao , Wei Yang , Zesen Peng
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引用次数: 0

摘要

由于页岩地层的渗透率极低,水平井与体积压裂相结合是提高大港大陆页岩油藏产量的有效技术。基于流动物质平衡法(FMB)和直线分析法(SLA),确定了激发储层体积(SRV)和排水体积,从而确定了页岩油藏渗流机制的流动制度。为解决页岩油井多尺度流动机制和抽油前后井底压力(BHP)变化的难题,建立了多线性分析流动模型,在拟合历史生产动态后预测未来产量和最终预期最终可采油量(EURo)。根据研究结果,可以得出结论:页岩油井在生产过程中的流动机制可分为两个阶段,包括 SRV 内部的线性流动和未受刺激区域至 SRV 的复合流动。分析了压裂液量、砂液比等压裂操作参数对页岩油生产率的影响,并对这一付油区的未来开发提出了独到的建议。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Production performance analysis of a continental shale oil reservoir in Bohai Bay basin

Due to the extremely low permeability of shale formations, the combination of horizontal well and volume fracturing has been proposed as an effective technique to improve the production of Dagang continental shale oil reservoirs. Based on the flow material balance method (FMB) and straight-line analysis (SLA) method, the stimulated reservoir volume (SRV) and drainage volume are determined to identify the flow regimes of the seepage mechanism of shale oil reservoirs. To resolve the challenges of multi-scaled flow regimes and bottom hole pressure (BHP) variation before and after pumping in shale oil wells, a multi-linear analytical flow model was established to predict the future production and the final expected ultimate recoverable oil (EURo) after fitting the historical production dynamics. Based on the results, it can be concluded that the flow regime of a shale oil well in production can be divided into two stages consisting of linear flow within SRV and composite flow from the un-stimulated area to SRV. The effects of fracturing operation parameters, such as fracturing fluid volume and sand/liquid ratio, on shale oil productivity, are analyzed, and insightful suggestions are drawn for the future development of this pay zone.

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来源期刊
Petroleum
Petroleum Earth and Planetary Sciences-Geology
CiteScore
9.20
自引率
0.00%
发文量
76
审稿时长
124 days
期刊介绍: Examples of appropriate topical areas that will be considered include the following: 1.comprehensive research on oil and gas reservoir (reservoir geology): -geological basis of oil and gas reservoirs -reservoir geochemistry -reservoir formation mechanism -reservoir identification methods and techniques 2.kinetics of oil and gas basins and analyses of potential oil and gas resources: -fine description factors of hydrocarbon accumulation -mechanism analysis on recovery and dynamic accumulation process -relationship between accumulation factors and the accumulation process -analysis of oil and gas potential resource 3.theories and methods for complex reservoir geophysical prospecting: -geophysical basis of deep geologic structures and background of hydrocarbon occurrence -geophysical prediction of deep and complex reservoirs -physical test analyses and numerical simulations of reservoir rocks -anisotropic medium seismic imaging theory and new technology for multiwave seismic exploration -o theories and methods for reservoir fluid geophysical identification and prediction 4.theories, methods, technology, and design for complex reservoir development: -reservoir percolation theory and application technology -field development theories and methods -theory and technology for enhancing recovery efficiency 5.working liquid for oil and gas wells and reservoir protection technology: -working chemicals and mechanics for oil and gas wells -reservoir protection technology 6.new techniques and technologies for oil and gas drilling and production: -under-balanced drilling/gas drilling -special-track well drilling -cementing and completion of oil and gas wells -engineering safety applications for oil and gas wells -new technology of fracture acidizing
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