草湖凹陷属塔北下古生界满加尔坳陷北延部分，主力生油岩为腐泥型的寒武－ 奥陶系碳酸盐岩。寒武系主生油期为加里东中期－ 海西晚期，奥陶系为海西期－ 燕山期。这两套生油岩曾生成并排出过大量油气，主运移期分别为晚古代晚期－ 早侏罗世和早中新世－ 第四纪，主要沿寒武－ 奥陶系由南向西、北、东侧向运移。凹陷北部及东部晚海西期强烈抬升，剥蚀作用长达４０ Ｍａ，不仅将二叠系剥蚀殆尽，而且已生成的油气沿断裂全部逸散，这是近年来十余口钻井全部落空的原因，但是在草湖凹陷与阿克库勒凸起之间的斜坡上的石炭系和三叠系圈闭形成早，后期破坏小，油气逸散少，成藏条件好，应是下一步勘探布井的有利场所 Caohu sag belongs to the northern extension of the Mangeer Depression in the Lower Paleozoic of the Tabei, and the main source rock is the sapropel type Cambrian-Ordovician carbonate rock. The main oil period of Cambrian was Caledonian-Late Hercynian, and Ordovician was Hercynian-Yanshanian. These two sets of source rocks have generated and expelled large amounts of oil and gas, and the main migration periods are Late Late Paleo-Early Jurassic and Early Miocene-Quaternary, respectively, mainly along the Cambrian-Ordovician from south to west , North, east of the migration. During the Late Hercynian period in the northern and eastern part of the sag, the uplift of the Late Hercynian was strong with up to 40 Ma denudation, which not only denuded the Permian completely but also generated all the hydrocarbons that have escaped along the fault. This is the reason that more than 10 wells have been emptied in recent years However, the Carboniferous and Triassic traps on the slope between Caochu Sag and Akekule Bulge formed earlier and later have less damage, less oil and gas emission and good reservoir forming conditions, and should be the next exploration cloth Well location