徐家围子地区深层运移输导系统及对天然气成藏与分布的控制

<title>gration translocationsystem and its controlling to reservoir forming and distribution of natural gas in deep strata of Xujia weizi region.

在研究徐家围子地区深层天然气运移输导系统构成要素及特征的基础上,将其连接烃源岩和圈闭的运移输导系统划分为四种类型,即源内砂体输导系统、源内断层输导系统、源外不整合面-断层输导系统和源外不整合面-断层-砂体输导系统,它们分别控制地层超覆、火山岩、基岩风化壳和各种与断层有关的构造气藏的形成。源内砂体输导系统发育干安达-肇州古隆起的西侧和肇东古隆起的南侧,是寻找火山岩气藏的有利地区。源内断层输导系统主要发育在沙河子组-营城组烃源岩区内的火山岩体内,是寻找火山岩气藏的有利地区。源外不整合面-断层输导系统发育在安达-肇州和肇东古隆起上,是寻找基岩风化壳气藏的有利地区。源外不整合面-断层-砂体输导系统发育于安达-肇州和肇东古隆起的上方或斜上方,是寻找与断层有关的构造气藏的有利地区。

<abstract>sed on studying the forming factors and characteristic of migration translocation systems of natural gas in deep strata of Xujiaweizi region, four types of migration translocation systems connecting source rocks and traps are divided. They are sandbody translocation system in source rocks, fault translocation system in source rocks, unconformity surface -fault translocation system outside source rocks and unconformity surface-fault-sandbody translocation system outside source rocks. They separately control stratigraphic overlap, volcanic rocks, weathering crust of base rocks and every structure gas reservoir that are related with fault. Sandbody translocation system in source rocks mainly developed in the west of Anda-Zhaozhou ancient upb'ft and the south of Zhaodong ancient uplift is the favorable area of seeking igneous rock gas reservoirs. Unconformity surface-fault translocation system outside source rocks mainly developed on Anda-Zhaozhou and Zhaodong ancient uplift is the favorable area of seeking base rocks weathering crust gas reservoirs. Unconformity surface-fault-sandbody translocation system outside source rock mainly developed above or slant above Anda-Zhaozhou and Zhaodong ancient uplift is the favorable area of seeking structural gas reservoir that is related with faults.