葡南扶余低渗透油藏注采技术政策研究

发布时间：2018-05-23 12:53

本文选题：低渗透油藏 + 注水开发　；参考：《中国石油大学(华东)》2015年硕士论文

【摘要】：目前我国中高渗透率油藏的开采已普遍进入后期阶段,储量丰富的低渗透油藏其重要性日趋突显。由于低渗透油藏注水井吸水能力低,生产井见注效果差,为了改善低渗透油藏注水开发效果,研究适用于低渗透油藏的注采技术政策及开发相关的应用软件具有重要意义。本文通过对低渗透油藏开发机理和特征进行分析,明确了目前低渗透油藏注采技术政策存在的问题,在生产实践中注采系统不完善,需要进行注采技术政策的合理优化。之后,分析了大庆低渗透典型区块的地质特征、开发特征,明确了注采优化指标。以大庆七厂葡南扶余为研究区块,综合运用油藏工程方法和数值模拟方法进行了低渗透区块的技术政策研究,包含井网适应性评价、压力系统评价和注采参数三个方面。其中,井网适应性研究对井网形式和井网密度进行了评价与分析,压力系统评价包含对注入端压力、采出端压力、地层压力和生产压差的评价和分析,注采参数包含对注入量和注采比的评价与分析,最终给出了合理的技术政策指标。通过对技术政策的综合分析,建立了低渗透油藏注采技术政策分析软件。软件核心为改进的黑油模型,模型考虑了低渗透油藏的非线性渗流机制,能够对三维三相数值模拟模型进行有效的模拟;同时,编制的技术政策优化分析算法能够与软件实现较好的耦合,对低渗透油藏的生产制度能够进行有效的分析和评价,实现了前处理、后处理功能的可视化;优化了软件界面,能够在现场实际应用中推广。最后,以葡南扶余为例进行了软件的适应性评价,同时给出了其合理的注采技术政策。最终,形成了一套油藏工程方法和数值模拟相结合的、适应于现场应用的软件分析平台,为低渗透注采技术政策制定提供了有力的支持。
[Abstract]:At present, the exploitation of medium and high permeability reservoirs in China has generally entered the late stage, and the importance of low permeability reservoirs with abundant reserves is becoming more and more important. Due to the low water absorption capacity of water injection wells in low permeability reservoirs and the poor injection effect in production wells, it is of great significance to study the injection-production technology policy and related application software for low permeability reservoirs in order to improve the water injection development effect in low permeability reservoirs. Based on the analysis of the development mechanism and characteristics of low permeability reservoirs, the problems existing in the policy of injection-production technology in low permeability reservoirs are clarified in this paper. The injection-production system is not perfect in production practice, and the rational optimization of injection-production technology policy is needed. After that, the geological characteristics and development characteristics of typical low permeability blocks in Daqing are analyzed, and the optimization indexes of injection and production are defined. The technical policy of low permeability block is studied by using reservoir engineering method and numerical simulation method, which includes well pattern adaptability evaluation, pressure system evaluation and injection-production parameters. Among them, the adaptability study of well pattern evaluates and analyzes the pattern form and density of well pattern. The evaluation of pressure system includes the evaluation and analysis of injection end pressure, production end pressure, formation pressure and production pressure difference. The injection-production parameters include the evaluation and analysis of injection rate and injection-production ratio, and the reasonable technical policy index is given. Based on the comprehensive analysis of technical policy, a software for technical policy analysis of injection and production in low permeability reservoir is established. The core of the software is the improved black oil model, which considers the nonlinear percolation mechanism of the low permeability reservoir, and can effectively simulate the three-dimensional three-phase numerical simulation model. The optimized analysis algorithm of technical policy can be well coupled with the software, the production system of low permeability reservoir can be analyzed and evaluated effectively, the function of pre-processing and post-processing can be visualized, and the software interface is optimized. It can be popularized in practical application. Finally, the software adaptability evaluation is carried out by taking Fuyu in Punan as an example, and its reasonable policy of injection-production technology is also given. Finally, a software analysis platform combining reservoir engineering method and numerical simulation is formed, which is suitable for field application, and provides a strong support for the formulation of low permeability injection-production technology policy.
【学位授予单位】：中国石油大学(华东)
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE355

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