泡沫辅助蒸汽驱矿场试验及效果

发布时间：2018-04-24 11:22

  本文选题：稠油 + 泡沫　； 参考：《油气地质与采收率》2017年05期

【摘要】：蒸汽驱易发生汽窜,且蒸汽波及效率低,开发效果不理想,为探索稠油油藏提高采收率的新途径,在胜利油区孤岛中二北Ng5稠油单元开展泡沫辅助蒸汽驱矿场试验。针对蒸汽驱高温特点,研发适用于蒸汽驱的耐高温泡沫剂DHF-1,该泡沫剂具有良好的耐温和封堵性能,300℃以下阻力因子始终大于20;室内驱替实验结果表明,泡沫辅助蒸汽驱可有效改善蒸汽波及状况,提高驱油效率。2010年10月开始泡沫辅助蒸汽驱矿场试验,注汽井注汽压力平均上升1.6 MPa,油井全部见效,示踪剂监测平面驱替更均衡,密闭取心井岩心分析平均驱油效率达62.4%,说明泡沫辅助蒸汽驱可提高蒸汽前缘的稳定性,抑制蒸汽突进,明显改善开发效果;截至2016年6月,试验区已累积产油23.6×10~4t,采出程度为52.1%,较蒸汽吞吐已提高采收率16.8%。
[Abstract]:Steam channeling is easy to occur in steam drive, and the steam sweep efficiency is low, and the development effect is not ideal. In order to explore a new way to improve oil recovery in heavy oil reservoir, foam auxiliary steam drive field test was carried out in the Ng5 heavy oil unit in Gudao, Shengli oil area. In view of the high temperature characteristics of steam flooding, the foam agent DHF-1, which is suitable for steam flooding, is developed. The foam agent has good temperature resistance and plugging performance, and the resistance factor below 300 鈩，

本文编号：1796419