渤海湾盆地东濮凹陷古生界煤成烃特征模拟实验研究

发布时间：2018-05-17 13:37

  本文选题：热模拟 + 生排烃模式　； 参考：《石油实验地质》2017年04期

【摘要】：通过渤海湾盆地东濮凹陷石炭—二叠系煤系地层实际地质条件下煤的半开放体系加水热模拟实验研究,刻画了该区煤岩不同温压介质条件下生排烃特征及潜力。研究表明:(1)东濮凹陷石炭—二叠系煤具有极高的生烃潜力,最高产烃量达254 mg/g,其中气态烃总产率220 m L/g,液态烃最高产率为145.8 mg/g;(2)煤成油的演化呈峰形尖锐的单峰特征,生油高峰在325℃(Ro=1.08%),生成的液态烃类近40%排出煤体;(3)煤成气的演化呈多阶段性逐渐增大的特征,其中325~450℃和500~550℃2个区间气态烃类快速增加,前者主要缘于液态烃的大量裂解,后者是煤芳香结构进一步稠合生烃演化产生;(4)东濮凹陷石炭—二叠系煤既生油又生气,其煤成油潜力与吐哈盆地侏罗系煤相当,煤成气潜力与鄂尔多斯石炭—二叠系煤相当。
[Abstract]:The characteristics and potential of hydrocarbon generation and expulsion in different temperature and pressure medium of coal rocks in Dongpu sag of Bohai Bay Basin are described through the experimental study on the semi-open system of coal under the actual geological conditions of Carboniferous and Permian coal measures in Bohai Bay Basin. The results show that the Carboniferous and Permian coals in Dongpu sag have extremely high hydrocarbon generation potential, with the highest hydrocarbon yield of 254mg / g, in which the total yield of gaseous hydrocarbon is 220ml / g, and the highest yield of liquid hydrocarbon is 145.8 mg / g / g). The peak of oil generation is at 325 鈩，

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