青平川采油厂东西沟采区开发潜力及对策研究

发布时间：2018-06-22 20:39

本文选题：青平川油田 + 长2油层组　；参考：《西安石油大学》2015年硕士论文

【摘要】：青平川油田长2油层组主要发育主要为岩性油藏和构造-岩性油藏,研究区长2油层组构造简单。青平川长2地层孔隙度主要为10~15%;渗透率大部分小于5×10-3μm2。根据储层物性分级标准,青平川长2储层为中低孔低渗、特低渗砂岩储层。本研究采用的用岩性控制为基础的协同建模方法,可以有效地避免在储层物性参数模型中出现与实际地质认识不相符合的参数分布情况,如高的孔、渗带出现在非砂体发育区域中。研究区长2油藏注水初步受效,水驱储量动用程度较好,但开发中存在诸多问题:低产井比例高,影响区块稳产;地层能量保持水平较低,储层及流体性质变差;高含水比例增高,影响注水开发等;剩余油分布不清楚,挖潜方向不明确。利用动态法对研究区长2油藏油井的最大累积产量和剩余可采储量进行了计算,并对研究区开发潜力进行了分析。研究区下一步稳产技术政策为:分区调整注水强度,提高注水效果;优化注水工艺,提高注水利用率;完善注采井网,提高地层压力保持水平;挖潜剩余油,减缓产量递减。
[Abstract]:The main development of Chang 2 oil formation in Qingpingchuan Oilfield is lithologic reservoir and structure-lithologic reservoir. The structure of Chang 2 reservoir in Qingpingchuan Oilfield is simple. The porosity of Qingpingchuan Chang2 formation is mainly 10 ~ (15) and the permeability is less than 5 脳 10 ~ (-3) 渭 m ~ (2). According to the classification standard of reservoir physical properties, Qingpingchuan Chang2 reservoir is a low porosity and low permeability sandstone reservoir. The collaborative modeling method based on lithology control in this study can effectively avoid the occurrence of parameter distribution, such as high porosity, which does not accord with the actual geological knowledge in the reservoir physical property parameter model. The seepage zone appears in the area of non-sand body development. In Chang2 reservoir, water flooding is effective initially, and water drive reserves are produced well, but there are many problems in development: high proportion of low production wells, affecting stable production in block, low level of formation energy maintenance, and poor reservoir and fluid properties; The increase of high water cut ratio affects water injection development, and the distribution of remaining oil is not clear, and the direction of tapping potential is not clear. The maximum cumulative production and remaining recoverable reserves of oil wells in Chang2 reservoir are calculated by using dynamic method, and the development potential of the study area is analyzed. The next technical policy of stable production in the research area is as follows: adjust the water injection intensity and improve the water injection effect; optimize the water injection technology to improve the water injection utilization ratio; improve the injection-production well pattern and raise the level of formation pressure maintenance; tap the potential remaining oil and slow down the decline of production.
【学位授予单位】：西安石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE34

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