断裂-砂体耦合侧向分流油气研究进展

发布时间：2018-03-29 10:36

本文选题：断裂-砂体耦合　切入点：侧向分流　出处：《地球物理学进展》2017年05期

【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 fault itself cannot be used as a good oil and gas trap. The hydrocarbon fluids that migrate vertically along the fault zone must be separated sideways to the two plates of sand. It is only by entering the proper reservoir space that the reservoir can eventually be accumulated into a reservoir. However, at present, there are relatively few studies on the fault-sand coupling complex transport system. It is impossible to reasonably explain the reason why the oil and gas enrichment degree of oil and gas is different between two fault plates or the same plate of fault in oilfield exploration, which has become the "bottleneck" of oil and gas fine exploration in faulted basin at present. This paper is based on the fault-sand body plane. On the basis of systematic analysis of profile configuration types, the mechanism of coupled migration of oil and gas from fault to sand body is expounded, and the factors affecting lateral distribution of oil and gas in seven aspects are summarized systematically: caprock, fault and dominant migration channel of sand body. The development degree of fracture induced by fault zone, the contact area of fault-sand body, the difference of permeability between fault and sand body, The heterogeneity between sand layers and the existence of drainage channels in sand bodies are discussed. Finally, three main problems and development trends in the study of fracture-sand body coupling lateral distributary oil and gas are pointed out.
【作者单位】：东北石油大学地球科学学院;大庆油田勘探开发研究院;
【基金】：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) 中国博士后科学基金项目(2016M591509)联合资助
【分类号】：P618.13

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