新疆石油地质 ›› 2021, Vol. 42 ›› Issue (4): 495-505.doi: 10.7657/XJPG20210415
魏兵1(), 张翔1, 刘江1, 蒲万芬1, 李一波1, 王晓超2
收稿日期:
2020-06-09
修回日期:
2020-12-09
出版日期:
2021-08-01
发布日期:
2021-08-09
作者简介:
魏兵(1983-),男,山东济宁人,教授,博士生导师,(Tel)13668281923(E-mail) 基金资助:
WEI Bing1(), ZHANG Xiang1, LIU Jiang1, PU Wanfen1, LI Yibo1, WANG Xiaochao2
Received:
2020-06-09
Revised:
2020-12-09
Online:
2021-08-01
Published:
2021-08-09
摘要:
通过详细梳理近年来国内外致密油藏提高采收率现场实施案例,分析了各类开发方式的效果,总结了现场试验中发现的问题及得到的启示。从国内外现场试验的结果来看:注气(CO2和天然气)是目前主流的开发方式;多数先导性试验取得了成功,原油采收率可提高3%~30%;实验室模型过于理想化,与现场试验效果差异较大甚至相悖;裂缝干扰和窜流导致能量波及不均衡,是部分先导性试验失败的根本原因。因此,如何协调裂缝“利用和治理”的矛盾,明确致密基质与裂缝间的“质”换机制,通过现场经验指导并优化实验室研究等是中国致密油藏开发亟待解决的关键问题。此外,应进一步优化致密油藏资源评价方法,加大对油气行业政策的扶持力度,促进致密油藏提高采收率理论与技术的跨越式发展。
中图分类号:
魏兵, 张翔, 刘江, 蒲万芬, 李一波, 王晓超. 致密油藏提高采收率现场试验进展和启示[J]. 新疆石油地质, 2021, 42(4): 495-505.
WEI Bing, ZHANG Xiang, LIU Jiang, PU Wanfen, LI Yibo, WANG Xiaochao. Progress and Enlightenment of EOR Field Tests in Tight Oil Reservoirs[J]. Xinjiang Petroleum Geology, 2021, 42(4): 495-505.
表2
中国致密油藏提高采收率现场试验情况"
地区 | 提高采收率方法 | 试验结果 | 现场经验 |
---|---|---|---|
鄂尔多斯盆地 鄂尔多斯盆地 | 注CO2 | 产油量大幅度提高 | CO2驱具有可行性和经济性 |
注水吞吐 | 吞吐有效井组约为70% | 需根据人工裂缝破裂压力大小选择注入方式 | |
大庆榆树林油田 | 注CO2 | 试验取得显著效果 | 注入性问题得到解决,CO2驱具有较高的应用前景 |
长庆油田 | 注空气泡沫 | 裂缝侧向井见效明显,主向井效果不明显 | 空气泡沫驱可有效提高采收率,但气窜风险依然较大 |
渭北油田 渭北油田 | 注表面活性剂 注微生物 | 累计增油量为47.00 t,增油效果明显 累计增油量为44.47 t,增产效果较为明显 | 注表面活性剂具有良好的改善水驱效果 |
微生物采油技术在致密油藏具有可行性 |
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