Xihu Sag is a giant depression basin with coal beds of Pinghu Formation as its main hydrocarbon source rocks.

西湖凹陷为一大型坳陷盆地，其主要烃源岩为平湖组煤系地层。

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The compaction is the main force that expels the hydrocarbon from source rocks in Fulin subsag.

富林洼陷油气从烃源岩中排出的主要动力是压实作用。

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For Dongying depression, the main factors to control hydrocarbon accumulation in lithologic reservoirs are good source rocks, special carriers and pathways and adequate accumulation dynamic.

良好的油源条件、独特的输导体系和成藏动力是控制东营凹陷岩性油气藏成藏的主要因素。

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