下第三系发现的油气藏以构造油气藏和地层油气藏为主。
The reservoirs found in the Lower Tertiary are mainly structural and stratigraphic type.
因此，压实排烃不是东营凹陷下第三系烃源岩排烃的主要机制。
So compaction is not the main mechanism of hydrocarbon expulsion of the Low Tertiary source rocks in the Dongying Depression.
江汉盆地下第三系潜江组和新沟嘴组是主要油气勘探目的层，水化学资料较多。
The Paleogene Qianjiang and Xinggouzui Formations with abundant hydrochemical data are main objective intervals targets for hydrocarbon exploration in Jianghan Basin.
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