气顶边水窄油环油藏开采中后期开发方式

doi:10.7657/XJPG20220115

摘要/Abstract

摘要：

具大气顶、窄油环、强边水特征的锦州X砂岩油藏,进入开发中—后期后,面临着地层压力下降快、气窜严重、挖潜难度大等难题,亟待优化其开发方式。以几何相似、物性相似和生产动态相似为原则,对锦州X油藏进行剖面模型化,通过可视化二维物理模拟实验,验证了屏障注水方案的可行性。在此基础上,结合数值模拟,推荐水平井平行井网屏障注水方案并确定实施技术要求。考虑到油藏的复杂性与开发风险,以气窜严重、纵向驱替不均衡、增产效果显著为原则,优选1个井组开展先导试验,提高对屏障注水的动态认识,为油藏开发提供借鉴。

关键词: 气顶, 边水, 窄油环, 屏障注水, 水障井, 物理模拟实验, 气窜, 提高采收率

Abstract:

The X sandstone reservoir in Jinzhou has a large gas cap, narrow oil ring and strong edge water. After entering its middle to late development stage, the reservoir faces the problems such as rapid formation pressure drop, severe gas channeling and difficult potential tapping, so it is urgent to optimize the development methods. Following the principles of geometric similarity, physical property similarity and production performance similarity, we optimized the profile model of the reservoir, and validated the feasibility of a barrier water injection scheme through 2D visualized physical simulation experiments. Then we proposed a barrier water injection scheme with horizontal wells in a parallel well pattern by combining with numerical simulation, and demonstrated the technical requirements for implementing the scheme. Considering the reservoir complexity, development risks, severe gas channeling, uneven vertical displacement and the ultimate goal for significant stimulation effects, a well group was selected for pilot test to improve the understanding of barrier water injection performance. The result provides a reference to the development of similar reservoirs.

Key words: gas cap, edge water, narrow oil ring, barrier water injection, water barrier well, physical simulation experiment, gas channeling, enhanced oil recovery

中图分类号:

TE341

岳宝林, 祝晓林, 刘斌, 陈存良, 王双龙. 气顶边水窄油环油藏开采中后期开发方式[J]. 新疆石油地质, 2022, 43(1): 102-106.

YUE Baolin, ZHU Xiaolin, LIU Bin, CHEN Cunliang, WANG Shuanglong. Mid-Late Development of Reservoirs With Narrow Oil Ring, Gas Cap and Edge Water[J]. Xinjiang Petroleum Geology, 2022, 43(1): 102-106.

图/表 4

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