华北油田复杂断块油藏高含水期改善水驱技术研究与应用

发布时间：2018-02-09 22:06

本文关键词： 复杂断块水驱剩余油采收率　出处：《中国石油大学(华东)》2015年硕士论文　论文类型：学位论文

【摘要】：华北油田受区域构造和沉积环境的影响,开发砂岩油藏以复杂断块为主,构造破碎复杂,埋藏深,物性差,非均质性强,而且大多数已进入高含水期,有效开发难度大。因此,针对这类油藏的地质及开发特征,分析剩余油分布规律,优化注采井网,对控制含水上升率,提高水驱波及范围,从而提高油藏水驱采收率具有重要意义。根据华北复杂断块油藏的地质特点与开发规律,借鉴国内外同类型油藏改善水驱技术经验,充分应用新的监测技术和丰富的开发动态资料,分析了典型区块剩余油分布规律,对剩余油进行了量化研究。在此基础上,通过开展室内试验,进行影响水驱采收率影响因素分析。开展了层系、井网、注采关系等开发技术政策优化研究,并制定了适合华北油田复杂断块油藏的技术政策优化流程。综合分析试验区目前开采特征及开发中存在的问题,有针对性的分步实施,筛选出了适合华北油田复杂断块油藏的配套挖潜技术。选择典型区块进行实例应用,共在51个区块实施了整体调整,优化了井网,优化了注采关系。实施后,28个区块日产油量增加,40个区块综合递减减缓,35个区块实现了含水上升减缓,所有实施区块开发效果均得到改善。本论文研究成果对改善高含水期复杂断块油藏开发效果具有重要的指导意义。
[Abstract]:Under the influence of regional structure and sedimentary environment, the development of sandstone reservoirs in Huabei Oilfield is dominated by complex fault blocks, complicated structure fragmentation, deep burial, poor physical properties, strong heterogeneity, and most of them have entered into high water-cut period and are difficult to develop effectively. According to the geological and development characteristics of this kind of reservoir, the distribution law of remaining oil is analyzed, the injection-production pattern is optimized, the water cut rise rate is controlled and the water drive sweep area is improved. According to the geological characteristics and development rules of complex fault block reservoirs in North China, the experience of improving water flooding technology in the same type of reservoirs at home and abroad is used for reference. Based on the new monitoring technology and abundant development dynamic data, the distribution law of residual oil in typical blocks is analyzed, and the remaining oil is quantitatively studied. On this basis, the laboratory tests are carried out. The influencing factors of water drive oil recovery are analyzed. The research on the optimization of development technology policy, such as the series of layers, well pattern and injection-production relationship, is carried out. The technical policy optimization process suitable for complex fault-block reservoirs in Huabei Oilfield is worked out. The current production characteristics and problems existing in the development of the test area are comprehensively analyzed and implemented step by step. The matching potential tapping technology suitable for complex fault block reservoirs in Huabei Oilfield has been screened out. Typical blocks have been selected for practical application. A total of 51 blocks have been adjusted as a whole and the well pattern has been optimized. The injection-production relationship has been optimized. After implementation, the daily oil production in 28 blocks has increased, the comprehensive decline in 40 blocks has slowed down, and the increase in water cut has been slowed down in 35 blocks. The research results of this paper have important guiding significance for improving the development effect of complex fault-block reservoirs in high water-cut period.
【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】：TE357.6

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