【摘要】 通过对鄂尔多斯盆地杭锦旗地区古生界断裂特征、埋藏历史、包裹体特征、生烃历史、砂岩致密化过程进行分析,认为该地区天然气成藏存在2个成藏期。第1成藏期发生在侏罗纪以前,在泊尔江海子断裂以北形成常规气藏;第2成藏期发生在早白垩世以后,在泊尔江海子断裂以南地区形成深盆气藏。杭锦旗地区储层致密化是由沉积相、岩矿成分、成岩作用等因素共同作用的结果。更多还原

【Abstract】 Based on the analysis of Paleozoic fault characteristics, burial history, characteristics of fluid inclusions, hydrocarbon-generation history, sandstone densification process, it was considered that there were two accumulation stages in this area. The first accumulation occurred before Jurassic period and normal gas reservoirs formed in the area to the north Boerjianghaizi fault. The second accumulation occurred after Cretaceous period and gas reservoirs formed in the area to the south of Boerjianghaizi fault. The results show that the densification in Hangjinqi Area is the outcome of the joint action of sedimentary facies, mineral composition and diagenesis.更多还原