侏罗系烃源岩地表处于低成熟油气生成阶段，覆盖区在生油窗之内，为现实烃源岩。

They are at mature to highly mature stage in Kekeya and Pusha-Keliyang areas, as practical hydrocarbon source rocks.

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在生油窗内同一套烃源岩样品的ETR随深度（成熟度）增加无明显变化，具有很好的热稳定性；

There was no change in ETR of each source rock interval with the increase of depth in the oil window, which indicated ETR had excellent thermic stability.

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下古生界烃源岩在西部坡折带及南北隆起区现今仍处于有效生油窗内（镜质组反射率小于1.3 % ）。

Nowadays, at the western slope and the northern and southern uplifts the Lower Paleozoic source formations are still in the active oil generation Rold ( R o< 1.3%).

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下古生界烃源岩在西部坡折带及南北隆起区现今仍处于有效生油窗内（镜质组反射率小于1.3 % ）。

Nowadays, at the western slope and the northern and southern uplifts the Lower Paleozoic source formations are still in the active oil generation Rold ( R o< 1.3%).

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