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这个地区在古生代沉积了4000—8000米以海相为主的地台型沉积建造(局部有地槽型沉积),形成了几套可能生油的岩系。其中石炭系(局部包括下二迭统下部)生油条件较好,被视为本区的区域性生油岩。
This area was deposited in the Paleozoic 4000-8000 meters of marine-dominated platform type sedimentation (partial trough-type sedimentation), the formation of several sets of oil may rock. Among them, Carboniferous (partially including the lower part of the Lower Second Permian) has good oil production conditions and is considered as a regional oil source rock in this area.