碳氢化合物
油页岩
成熟度(心理)
烃源岩
地质学
有机质
石油工程
总有机碳
碳纤维
吸附
构造盆地
环境化学
化学
有机化学
地貌学
材料科学
古生物学
心理学
发展心理学
复合数
复合材料
作者
Yuchen Zhang,Min Wang,Jinbu Li,Chen Zhao,Yongtao Yu,Liang Xu,Zixiao Deng
标识
DOI:10.1111/1755-6724.15102
摘要
Abstract Because of the influence of hydrocarbons, especially adsorbed hydrocarbons, on the detection of cracked hydrocarbon (S2) and total organic carbon (TOC), the hydrogen index (HI)‐based hydrocarbon generation model deviates from actual practice. In this study, the shale in the first member of the Qingshankou Formation in the central depression of the Songliao Basin, where in northeastern China, was taken as the research object and a correction method for S2 and TOC was established. By correcting the experimental results of different maturity samples, the actual hydrocarbon generation model has been revealed, the differences before and after correction compared, and the evolutionary characteristics of the adsorbed hydrocarbon content were clarified. The results show that the organic matter enters the hydrocarbon generation threshold at R o –0.5% and reaches the hydrocarbon generation peak at R o –1.0% and that the hydrocarbon generation process ends at R o –1.3%. The hydrocarbon generation model established based on the measured values has a ‘lag effect’ compared to actual values, and this extends the hydrocarbon generation window of organic matter and delays the hydrocarbon generation peak. With the increase of maturity, adsorbed hydrocarbon content shows the characteristics of ‘first increasing, then stabilizing, and then decreasing’, and reaches the most abundant stage at R o of 0.9%–1.3%.
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