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本文对云南楚雄中生代盆地上三叠统煤成烃源层进行了原始有机质丰度和原始产烃潜力恢复的尝试。该烃源层在盆地中具有不均衡热变的特点，南北之间的Ｒ０可由０．８％变化到４．５％不等，东西向的差异也很明显。在各区因排烃量不同而造成有机质残余率不等的情况下，如何恢复其原始有机质丰度和原始产烃潜力，以便进行合理的油气资源评价成为该盆地勘探工作的重要课题。作者通过对生源相近、成煤环境类似而成熟度极低的本区晚第三纪煤系和上三叠统变质最低的华坪煤系样品，按不同温阶进行系统的外加温、外加压生烃排烃模拟实验，从而分别编制出热演化程度与其排烃率（Ｒ０－ＨＣ排）和有机碳损耗率（Ｒ０－Ｃ损）的关系曲线。利用楚雄盆地上三叠统煤成烃源层相同比例尺的残余有机碳平均含量等值线图和平均Ｒ０等值线图叠合，获得两种曲线的若干交汇点。基于各交汇点的Ｒ０值和经过换算的有机碳损耗率，分别从Ｒ０－Ｃ报和Ｒ０－ＨＣ排曲线上求出各交汇点已损失的有机碳百分率和已排出烃类的百分率，从而恢复了各点所在烃源层的原始有机碳丰度和原始产烃潜力。
This paper attempts to recover the original organic matter abundance and hydrocarbon potential of the Upper Triassic coal-forming hydrocarbon source rocks in the Mesozoic basin of Chuxiong, Yunnan Province. The hydrocarbon source is characterized by an imbalanced thermal change in the basin. The R0 varies from 0.8% to 4.5% between north and south, and the difference between east and west is obvious. How to restore the original organic matter abundance and the original hydrocarbon potential in order to make rational evaluation of oil and gas resources become an important issue in the exploration work of the basin under the conditions of different residual hydrocarbon rates caused by different hydrocarbon expulsion. By comparing the samples of the Huaping coal series with the lowest maturity and the lowest maturity in the Upper Triassic and the Upper Triassic in this area, the samples with similar provenances and similar coal-forming environments are systematically heated at different temperatures The simulation experiment of pressurized hydrocarbon generation and expulsion is carried out, and the relationship curves between the degree of thermal evolution and the ratio of hydrocarbon expulsion (R0-HC) and the loss of organic carbon (R0-C) are respectively prepared. Several rendezvous points of the two curves were obtained by overlaying the contours of average residual organic carbon in the same scale of the upper Triassic coal-forming source rocks in the Chuxiong Basin with the average R0 contour map. Based on the R0 values of the junctions and the converted organic carbon loss rates, the percentages of organic carbon lost and hydrocarbons discharged at each juncture were calculated from the R0-C and R0-HC emission curves, respectively, to recover The original organic carbon abundance and primary hydrocarbon potential of hydrocarbon source where each point is located.