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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.
Fracture itself can not be regarded as a good oil and gas trap. The hydrocarbon fluid migrating vertically along the fault zone must be shunted laterally to the two sands, and can enter the proper reservoir space to accumulate finally. However, There are relatively few studies on the complex conductivity system of sandbody coupling, which can not reasonably explain the reason that oil and gas enrichment varies greatly between the two disks or the same disk and different sand layers in oilfield exploration. Based on the systematic analysis of fracture-sandbody plane and profile configuration types, the mechanism of oil and gas migration and fracture coupling between the fracture and sand body is expounded and the factors influencing lateral shunting of oil and gas are summarized. : The dominant migration channels of caprock, fault and sand body, the degree of development of fracture induced zone, the contact area between fault and sand body, the difference of permeability between fault and sand body, the interlayer heterogeneity of sand body and the existence of sand body Finally, the main problems and development trends in the study of lateral shunting oil and gas coupling between fracture and sand body are pointed out.