双河油田强边水小断块普通稠油油藏聚合物驱开发实践与认识

双河油田核二段油层层数多、单层含油面积小、非均质性严重、边水活跃,属于典型的强边水小断块油藏,综合含水高,开发效果逐年变差,为此,开展小断块油藏聚合物驱边水控制技术、井网调整技术、注采参数优化技术、前缘段塞优化技术以及合理配产配注技术等研究和初步应用,应用结果表明,聚合物驱可有效提高强边水小断块油藏最终采收率。

Polymer flooding development practice and understandings of heavy oil reservoirs with strong edge water in fault-blocks of Shuanghe oilfield

Oil reservoirs of He 2 member in Shuanghe oilfield was characterized by multiple layers,small oil-bearing area in single layer,severe heterogeneity and active edge water,which belonged to typical small fault-block oil reservoir with strong edge water,with high comprehensive water cut and worse development effect year by year.Therefore,a series of techniques such as edge water control technique,well pattern adjustment technique,injection-production parameters optimization technique,frontal slug optimization technique and reasonable proration and injection allocation technique.Practice indicated the polymer flooding could effectively improve the ultimate recovery of small fault-block oil reservoirs with strong edge water.