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古地形地貌岩溶储层与古地貌圈闭密切相关,对后期油气藏形成具有控制意义。鄂尔多斯盆地于加里东运动晚期整体抬升,使得奥陶系下古生界岩层暴露地表,进而遭受严重剥蚀。因此开展前石炭系奥陶系古地貌恢复研究工作对寻找油气田具有指导意义。作者从沉积学角度出发,主要利用残余厚度法、印模法等,对靖边气田高桥地区马五1+2顶面进行了古地貌的恢复研究。
Paleogeomorphology Karst reservoirs are closely related to the paleogeomorphic traps, which have a controlling significance on the formation of later reservoirs. The Ordos Basin was generally uplifted in the late Caledonian motion, leaving the Ordovician Lower Paleozoic strata exposed to the surface and subsequently severely denuded. Therefore, carrying out research on the restoration of the paleolithography of the Ordovician Carboniferous in the former stage is instructive for finding oil and gas fields. From the perspective of sedimentology, the author mainly studies the restoration of palaeogeomorphology on the top of Ma5 1 +2 in Takahashi area in Jingbian Gas Field by means of residual thickness method and impression method.