Interpreting Rock-Eval pyrolysis data using graphs of pyrolizable hydrocarbons vs. total organic carbon
Interpreting Rock-Eval pyrolysis data using graphs of pyrolizable hydrocarbons vs. total organic carbon
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DOI：
10.1306/0c9b238f-1710-11d7-8645000102c1865d
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发表时间：
1990-06
期刊：
影响因子：
3.5
通讯作者：
F. F. Langford-F.;M. Blanc-Valleron
中科院分区：
文献类型：
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作者：
F. F. Langford-F.;M. Blanc-Valleron
干酪根是沉积岩的主要有机成分，通常采用岩溶热解方法进行分析。将数据绘制在S[2]与总有机碳(TOC)的关系图上，并确定回归方程，是确定真平均氢指数和测量烃类在岩石基质上吸附的最佳方法。这样的图还指示了存在的干酪根类型，避免了氢指数随总有机碳含量增加的问题。利用S[2]与总有机碳的图解，可以比较不同样品组的有机成分，建立它们的生油潜力。以法国阿尔萨斯穆尔豪斯盆地古近纪蒸发沉积为例，利用图解评价了古近纪蒸发沉积的沉积环境和含油气潜力。
Kerogen, the major organic component of sedimentary rocks, is commonly analyzed by Rock-Eval pyrolysis. Plotting the data on a graph of S[2] vs. total organic carbon (TOC) and determining the regression equation is the best method for determining the true average hydrogen index and measuring the adsorption of hydrocarbon by the rock matrix. Such a plot also indicates the type of kerogen present and avoids the problem of increasing hydrogen index with total organic carbon content. With the S[2] vs. TOC diagram, the organic component of different suites of samples may be compared and their petroleum-generation potentials established. As an example, the diagrams are used to evaluate the sedimentary environments and petroleum potential of the Paleogene evaporitic sediments of the Mulhouse basin, Alsace, France.