【摘要】 大庆长垣以东地区深层天然气输导通道主要由断裂、不整合面和砂体构成。该区砂体横向分布不稳定,物性差,不是天然气侧向长距离运移的输导通道,但可以起到衔接输导作用。输导通道对该区天然气成藏与分布起到了重要控制作用,主要表现在断裂将天然气输导致上覆不同储集层中聚集成藏。不整合面和砂体将天然气输导到四周古隆起上聚集成藏。沿断裂输导的天然气形成以断层为主的构造气藏,沿不整合面和砂体输导的天然气形成以地层及岩性为主的气藏。沿断裂输导运移聚集的天然气在剖面上呈串多层分布,沿不整合面和砂体输导运移聚集的天然气在平面上呈环状分布。更多还原

【Abstract】 Deep gas transporting pathways in the area to the east of Daqing Placanticline are constituted of fault, unconformity surface and sandbody. The lateral distribution of sandbody in this region is not stable, physical property is poor, sands are not main lateral long distance migration pathways of gas, but they can join unconformity surface. Transporting pathways played an important role in gas accumulation and distribution in this region. Fault transported gas into overlying reservoirs and formed gas reservoirs. Unconformity surface and sandbody transported gas to surrounding ancient uplifts and formed gas reservoirs. Gas transported by faults can form structure gas reservoirs. Gas transported by unconformity surface and sandbody can form formation or lithology gas reservoirs. Gas transported by faults distributed in a string on section. Gas transported by unconformity surface and sandbody distributed in a ring on plane.更多还原