Dawangbei area of Chezhen Sag had rich oil and gas, complex geologic framework and structural evolution caused the multiple trap types.

车镇凹陷大王北地区油气十分富集，复杂的地质结构和构造演化过程导致了该区圈闭类型十分丰富。

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Complex subtle trap further falls into structural lithology, structural unconformity and lithology unconformity reservoirs.

复合油气藏可细分为构造—岩性油气藏、构造—不整合油气藏及岩性不整合油气藏三类。

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