复杂断块油藏分区井网调控技术研究

发布时间：2018-04-23 17:54

  本文选题：复杂断块油藏 + 高含水期　； 参考：《中国石油大学(华东)》2015年硕士论文

【摘要】：复杂断块油藏与常规油藏相比,具有特有的地质和开发特点:含油面积小、断层发育、形状不规则、油水关系复杂、开发难度较大等。目前我国大部分油田均已进入高含水期,复杂断块油藏剩余油挖潜难度随之增大,因此,根据复杂断块油藏的构造特征和剩余油富集规律,开展复杂断块油藏分区井网调控技术方法研究,对提高该类油藏采收率具有重要意义。本文通过调研整理、统计分析,总结了复杂断块油藏典型分类,综合不同类型复杂断块油藏构造特征、断层分布和渗流特征确定了油藏I级分区方法。结合高含水期剩余油富集规律和规模,确定了油藏Ⅱ级分区表征指标和政策界限。在分区划分的基础上,针对不同类型复杂断块油藏开展了不同分区井网优化研究。结合不同分区井网调控原则,开展了不同类型断块油藏综合井网调控方法研究。应用油藏数值模拟技术,通过水驱流线和压力梯度分布对不同分区高含水期剩余油分布规律以及富集成因进行了分析。应用油藏工程方法,建立了单井加密经济政策界限,建立了扇形开启型断块油藏单井加密应用图版。针对不同类型断块油藏,开展了不同分区采油井加密方案优选和油水井对应优化研究。从注采井数、井型、井位等方面,形成了不同类型断块油藏开发初期井网部署最优方案和高含水期综合井网调控方法。以均衡驱替为优化目标,应用油藏工程方法,编制了一注两采典型井组高含水期注采井距优化程序,分析了地层倾角、储层平均渗透率和油井含水率等因素对合理注采井距的影响。
[Abstract]:Compared with conventional reservoirs, complex fault-block reservoirs have special geological and development characteristics, such as small oil-bearing area, fault development, irregular shape, complex oil-water relationship, and great difficulty in development, etc. At present, most oil fields in China have entered high water-cut period, and the difficulty of tapping remaining oil potential in complex fault-block reservoirs has increased. Therefore, according to the structural characteristics of complex fault-block reservoirs and the law of remaining oil enrichment, It is of great significance to improve the oil recovery of complex fault block reservoirs by studying the technique of well pattern control in complex fault block reservoirs. In this paper, the typical classification of complex fault-block reservoirs is summarized through investigation and arrangement, and the structural characteristics, fault distribution and percolation characteristics of different types of complex fault-block reservoirs are summarized. Combined with the enrichment law and scale of remaining oil in high water cut period, the index and policy limit of class 鈪，

本文编号：1792995