The Middle-Lower Jurassic to the west of Ejin Qi-Alxa Youqi, and the Lower Cretaceous in the northwest part of the corridor, Zongnan and Zongbei De-pressions have better oil potential.
额济纳旗-阿拉善右旗一线以西的中下侏罗统、走廊坳陷北段及宗南、宗北诸坳陷的下白垩统含油气远景较好。
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