【作者】 曹学良；

【导师】 陈开远；

【作者基本信息】 中国地质大学（北京） ， 能源地质工程， 2009， 博士

【摘要】 中渗复杂断块油藏在中国陆上已开发油田中占有重要地位,但目前开发水平比较低,同时也意味着开发潜力较大。为了能够进一步认识该类油藏开发中存在的问题、以及后期的科学开发,本文石油地质、油藏工程和经济评价等理论,运用渗流力学理论、数理统计、模糊数学、灰色系统等多种理论和方法相结合,深入研究这类复杂断块油藏开发后期开发技术政策和剩余油分布的特征,总结了开发以来各阶段技术政策,在研究宏观剩余油分布特征的基础上,进行了复杂断块油藏开发中后期的开发技术政策研究,以期达到改善开发效果,提高最终采收率的目的。本文的研究,取得了如下研究成果:1.总结了中渗复杂断块油藏的开发技术政策、开发特征和存在的问题,得到了中渗复杂断块油藏具有稳产期短、见水快、断层发育、构造复杂的特点;2.总结分析了中渗复杂断块油藏的剩余油分布规律和潜力所在。得出剩余油分布潜力主要在二三储层、大断层边角附近和井网控制不了的地方等;3.应用数学方法计算油藏开发过程中的合理井网密度、压力系统、油水井数比、合理的注采速度,优选了合理的相关指标,并计算了相应的合理界限;4.确定了开发技术政策适应性评价方法:根据储层和流体本身的特性、结合研究得到的指标体系,从理论上研究了开发技术政策适应性的评价方法,研究得到的理论体系运用到实际油田中,得出这类油藏在目前经济技术条件下所能够达到的开发效果,从而得出实际油藏的开发潜力。5.建立开发技术政策适应性评价指标体系:这方面采用多学科交叉进行研究,主要运用渗流力学理论、数理统计、模糊数学、灰色系统等多种理论和方法相结合,得出适应性评价体系。以上研究成果对中原油田中渗复杂断块油藏高效开发调整具有重要的现实意义,同时给相似油田制定各阶段开发技术政策提供借鉴,对中原油田的持续发展提供有力的技术支撑。在此基础上,形成了中渗复杂断块油藏中后期高效开发的技术政策。更多还原

【Abstract】 Complex fault block reservoirs with moderate permeability have an important position in the developed onshore oilfield in China. But the development level is too low, which means that the potential is still high. In order to further understand the problems existed in the development as well as scientific development in later time, further research on later development technological policy and characteristics of remaining oil distribution of this complex fault block reservoir is needed by using percolation mechanics theory and mathematical statistics, the fuzzy mathematics and grey system theory and the combining method. It summarizes the development stages and technical policies. Based on the research of the characteristics of macro distribution of the remaining oil, the development technique and policy in the middle and late production periods of complex fault block reservoirs have been studied in order to reach the target of improving the development effect and increasing final recovery rate. Based on the study, following results have been obtained.1) The technique and policy, development characteristics and existing problems of complex fault block reservoirs with moderate permeability have been summarized. It is recognized that complex fault block reservoirs with moderate permeability has the characteristics of short period of stable production, fast water through, faults development and complex structure.2)It summarized and analyzed the potential and distribution rules of remaining oil. It is recognized that the potential distribution of remaining oil is mainly in the areas of secondary and third class reservoirs, the edge and corner of large faults and the area where the well pattern con not controlled.3) The adaptability evaluation method for development technology and policy has been determined. According to the characteristics of reservoir and fluid, combined with the index system obtained from the research, the adaptability evaluation method for development technology and policy is studied theoretically. When the theoretical system is applied to oilfield development, the effect of development in this kind of reservoir at the current economic and technological conditions are able to achieved, thus the real development potential of the reservoir can be obtained.4) Evaluation index system for the adaptability of development technique and policy has been set up. In this area, interdisciplinary research has been adopted, mainly including percolation mechanics theory, mathematical statistics, the fuzzy mathematics and grey system theory, and finally adaptability evaluation system has been obtained.5) Set up adaptability evaluation index system of development technical policies, in which interdisciplinary research has been used. Adaptability evaluation system has been obtained by using percolation mechanics theory and mathematical statistics, the fuzzy mathematics and grey system theory and the combining method.This has great significance in the effectively development adjustment for the complex fault block reservoirs with moderate permeability. At the same tine, it can also give a guidance to determine the technique and policy in various development periods of the similar oilfield and provide technical support to continuous development of Zhongyuan Oilfield. Through the analysis to technique and policy of various development stages, the existing problems in the development have been further recognized.更多还原