In the early subsiding region, both the Kongdian Formation (E k) and the Shahejie Formation fall into oil window, but preservation of the expulsed oil and gas is a problem.
早期沉降型埋藏区地层埋藏较深,孔店组和沙三段均具有生排烃能力,但早期排出的烃存在一个保存问题;
3
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