Pingliang series in southern and western margins of Ordos Basin was provided to be the main source for oil-type gas in Jingbian Gas Field.

• 这一过程包含了油藏、油气共存和气藏3个成藏演化阶段，也证实了盆地西、南缘平凉组烃源岩是靖边气田油型气的主要来源。