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鄂尔多斯盆地上三叠系延长统,作为油气勘探的对象,已有近八十年的历史,但长期以来人们始终未能摆脱“井井有油,井井不流”的思想束缚。七十年代末期,随着现代沉积学理论的引进,地质工作者重新认识和评价了延长统。确认延长统为地台型的大型内陆湖盆沉积,其有利成油范围达5万平方公里,总资源量有14—17亿吨,油气主要富
Yanchang Formation of the Upper Triassic in the Ordos Basin, as the object of oil and gas exploration, has been in the history of nearly 80 years. However, for a long time, people have not been able to get rid of the shackles of “well being and no oil”. In the late seventies, with the introduction of modern sedimentology theory, geologists re-recognized and evaluated the extension system. Confirmed to extend the platform for the large-scale inland lake basin sediment deposition, its favorable oil range of 50,000 square kilometers, the total resources of 1.4-17 billion tons, the main oil and gas rich