渤海M油田整体加密效果评价方法研究及应用

发布时间：2018-05-27 13:03

本文选题：加密调整 + 开发效果评价　；参考：《西南石油大学》2015年硕士论文

【摘要】：对需要采用大井距开发策略的海上油田而言,随着油田开发程度与开发水平的提高,加密调整已成为大多数油田提高采收率的一种重要措施。如何在正确认识影响油田高效开发关键因素的基础上,建立健全油田整体加密效果评价响应指标体系,形成一套完善的海上油田整体加密效果评价方法,对油田高效开发具有长足的意义。基于当前油田整体加密效果评价方法的现状及存在的问题,以渤海M油田为例,主要开展了如下几方面的工作,并取得了相应的成果： (1)分析了包括井网驱替压力梯度分布、极限注采井距、注水有效影响范围等随井距、压差等因素的变化情况,研究了影响M油田高效开发的几个关键因素； (2)选取采收率响应指标、产量及储采状况类响应指标、井网完善状况类响应指标、含水状况类响应指标、水驱状况类响应指标等五大类指标,建立了整体加密效果响应指标评价体系,并分析了响应指标的计算方法,确定了各响应指标的评价标准； (3)以Buckley-leverett方程为基础,遵循物质平衡原理,建立微分流管理论,研究了水驱采收率与产水率理论变化关系； (4)以渤海M油田为研究对象,利用所建立的整体加密效果响应指标评价体系,对M油田加密调整前后开发效果的改善情况进行了分析,并针对分析结果提出了M油田整体加密调整开发优化建议；
[Abstract]:For offshore oil fields which need to adopt large well spacing development strategy, with the improvement of oilfield development degree and development level, infilling adjustment has become an important measure to improve oil recovery in most oilfields. On the basis of correctly understanding the key factors that affect the high efficiency of oilfield development, the paper establishes and perfects the response index system of integral infilling effect evaluation of oil field, and forms a set of perfect evaluation methods for integral infilling effect of offshore oil field. It has great significance for high efficiency development of oil field. Based on the present situation and existing problems of the whole infilling effect evaluation method in oil field, taking Bohai M oilfield as an example, the following aspects are mainly carried out, and the corresponding results are obtained. 1) the variation of well displacement pressure gradient distribution, limit injection-production interval and effective range of water injection with well spacing and pressure difference are analyzed, and several key factors affecting the high efficiency development of M oil field are studied. 2) selecting five kinds of indexes, such as the response index of oil recovery, the response index of production and storage and production condition, the response index of perfect well pattern, the response index of water cut condition, the response index of water drive condition, etc. The evaluation system of the response index of the whole encryption effect is established, and the calculation method of the response index is analyzed, and the evaluation standard of each response index is determined. (3) based on Buckley-leverett equation and following the principle of material balance, the differential flow tube theory is established, and the relationship between water drive recovery factor and water yield is studied. Taking Bohai M oilfield as the research object, the improvement of development effect before and after infilling adjustment in M oilfield is analyzed by using the evaluation system of integral infilling effect response index. According to the analysis result, the paper puts forward the optimized suggestion of integral infilling adjustment and development in M oilfield.
【学位授予单位】：西南石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE357.6

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