在综合分析盆地类型、天然气成因和富气凹陷形成条件的基础上，认为渤海海域是一个相对以油为主的油气区，天然气以油型气和陆源有机气为主，天然气藏可能以中、小型为主。

Based on a synthetical analysis of basin type, gas origins and gas prone sag evolution, Bohai Sea is considered as an oil dominant basin, where most gas is from oil type and terrigenous source rocks.

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东濮凹陷文南油田是我国东部典型的复杂断块油气田，其油藏类型多样，成因复杂。

Wennan oilfield of Dongpu depression is the typical complicated fault-block oilfield in east china. It has more style, more complex forming causation type.

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摘要：海拉尔盆地乌尔逊凹陷北部断裂复杂，沉积成因类型多，油藏类型认识不清。

Abstract: the reservoir types are unclear in the northern Wuerxun Sag, the Hailar Basin, due to the complex fractures and various sedimentary genetic types.

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