断块油藏高含水期分区井网调控技术
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杨勇(1971—),男,河南遂平人,教授级高级工程师,博士,从事油气田开发技术研究及管理工作。联系电话:13963375606,Email: yangyong.slyt@sinopec.com。

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国家科技重大专项“胜利油田特高含水期提高水驱采收率技术”(2016ZX05011002-003)。


Partitioned control technique of well pattern for fault-block reservoirs at high water cut stage
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    摘要:

    针对断块油藏不同区域开发对策不同的特点,提出分区井网调控技术。综合考虑断块油藏的构造、渗流等特征进行Ⅰ级分区,划分为夹角控制区、断层(断棱)控制区和井网控制区共3类8种区域;根据各分区剩余油富集程度对断块油藏进行Ⅱ级分区,分为剩余油富集区、剩余油弱富集区、水淹区和强水淹区。在对不同分区剩余油富集特征及控制因素分析的基础上,确定各分区井网调控方式。将不同类型的断块油藏看作是由不同类型的分区组合而成,进一步确定各分区的组合开发方式为:采油井部署在构造高部位、临近断层、靠近2条断层夹角的顶点,注水井采用边外注水,油、水井部署宜采用交错井网。将分区井网调控技术应用于辛10断块,采用油藏数值模拟方法预测,10 a累积增油量为2.53×104 t,提高采收率4.6%。

    Abstract:

    Based on the feature that the development methods of the fault-block reservoir vary in different parts,a partitioned control technique of well pattern was put forward. Considering the structural and flowing characteristics of the fault block reservoirs,the first level of reservoir partitioning technique was established,and the reservoir can be divided into 8 parts generally which can be summarize into 3 patterns:angle controlled region,fault controlled region and well controlled region. According to the distribution of remaining oil,the second level of reservoir partitioning was divided into enriched area of remaining oil,weak enriched area of remaining oil,water-flooded area and strong water-flooded area. Then the well pattern partitioned control method for different regions was determined based on analyzing remaining oil characteristics and control factors. Different kinds of fault block reservoir can be seen as a combination of different types of regions,and the combined development method can be further determined:the production well should be deployed in structure high site near the fault and close to the vertex of the angle between two faults,and the injection well ought to inject outside the edge using staggered line-drive pattern. This technique was applied to Xin10 fault block with good results,and the 10-year cumulative increased oil will be 2.53×104 t and EOR will be 4.6% after it was predicted by numerical simulation.

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杨勇,许鹏,王建,刘维霞,吴义志,崔传智.断块油藏高含水期分区井网调控技术[J].油气地质与采收率,2016,23(6):52~56

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  • 在线发布日期: 2016-10-20