地球物理学进展 ›› 2017, Vol. 32 ›› Issue (5): 2071-2077.doi: 10.6038/pg20170529

• 应用地球物理学Ⅰ • 上一篇    下一篇

断裂-砂体耦合侧向分流油气研究进展

孙同文1, 王伟1, 高华娟2, 吕延防1, 付广1   

  1. 1. 东北石油大学地球科学学院, 大庆 163318;
    2. 大庆油田勘探开发研究院, 大庆 163712
  • 收稿日期:2017-04-13 修回日期:2017-07-18 出版日期:2017-10-20 发布日期:2017-10-20
  • 作者简介:孙同文,男,1984年生,甘肃省武威市人,副教授,主要从事油气运移与保存条件研究.(E-mail:stwpetrolchina@126.com)
  • 基金资助:

    东北石油大学校青年基金项目(NEPUQN2015-1-02)、黑龙江省科学基金项目(QC2016048)和中国博士后科学基金项目(2016M591509)联合资助.

Research progress of fault-sandbody coupling lateral shunt oil and gas

SUN Tong-wen1, WANG Wei1, GAO Hua-juan2, LÜ Yan-fang1, Fu Guang1   

  1. 1. Northeast Petroleum University, Daqing 163318, China;
    2. Exploration and Development Research Institute of Daqing Oilfield Company Ltd, Daqing 163712, China
  • Received:2017-04-13 Revised:2017-07-18 Online:2017-10-20 Published:2017-10-20

摘要:

断裂本身不能作为好的油气圈闭,沿断裂带垂向运移的烃类流体必须要向两盘砂体侧向分流,进入合适的储集空间才能够最终聚集成藏.但目前对于断裂-砂体耦合的复式输导体系研究相对较少,无法合理解释油田勘探中断裂两盘或断裂同一盘不同砂层之间油气富集程度差异较大的原因,成为制约目前断陷盆地油气精细勘探的“瓶颈”.本文在断裂-砂体平面、剖面配置类型系统分析的基础上,阐述了断裂-砂体耦合运移油气的机理,并系统总结了7方面影响油气侧向分流的因素:盖层、断裂及砂体优势运移通道、断裂带诱导裂缝的发育程度、断裂-砂体接触面积、断裂和砂体间渗透率差异、砂体层间非均质性和砂体是否存在泄水通道.最后指出了目前断裂-砂体耦合侧向分流油气研究中存在的3方面主要问题和发展趋势.

Abstract:

The faults themselves can not be trapped as good oil and gas traps. Hydrocarbon fluids that migrate vertically along the fault zone must be diverted to the sand bodies of the two fault walls to enter the appropriate reservoir space to eventually accumulate. However, there are relatively few studies on the complex transport system of fault-sandbody coupling, which can not reasonably explain the reasons for the difference of oil and gas enrichment between the two fault walls or different sand bodies in the same fault wall, it had become "Bottleneck" of fine exploration of oil and gas in the rifted basin. Based on the analysis of the plane and profile configuration of the fault-sandbody, the mechanism of the coupling of the fault-sandbody is described, and seven factors influencing the lateral shunt of oil and gas are summarized systematically:cover, the advantage migration channel of fault and sandbody, The developmental degree of induced fractures in fault zone, the fault-sand body contact area, the difference permeability between the fault and the sandbody, the heterogeneity of the sand bodies and the existence of the discharge channel in the sand body. Finally, three main problems and development trend of the current fault-sandbody coupling lateral shunt oil and gas are pointed out.

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