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本文据煤层中所测的镜质体反射率(R_o)代表煤系热演化地温指数的论点、煤热模拟试验过程中热演化指标(R_o)随温度成函数递变的规律,研究煤系地层在不同地史过程中的R_o值与其影响因素的内在联系。 陕甘宁盆地上古生界煤系地层分布面积达二十三万平方公里。据现有资料,笔者整理了井下及地面123个煤样的R_o数据及二十一口井R_o值纵向变化资料,利用四口深井井温曲线及部分中、深试油井井温曲线作参照对比,结合区域构造及地质发展历史对上古生界煤系地层中R_o值及主要影响因素之间的关系、用数学地质的方法进行了赏试性的联系。从而应用于油气勘探。
Based on the fact that vitrinite reflectance (R_o) measured in the coal seam represents the thermal evolution geothermal index of coal measures and the law of thermal evolution index (R_o) changes with the temperature as a function of the coal thermal simulation test, The Inherent Relationship Between R_o Value and Its Influencing Factors in Different Historical Processes. Upper Paleozoic coal measures strata in the Gansu-Ningxia Basin cover an area of 230,000 square kilometers. According to the available data, the author sorted out the R_o data of 123 coal samples and the R_o values of 21 wells. Based on the comparison of well temperature curves of four deep wells and some well logs of deep well test wells , Combined with the regional structure and geological history of the relationship between the R_o value and the main influencing factors in the Upper Paleozoic coal measures strata, using the method of mathematical geology for the appreciation of the relationship. Thus applied to oil and gas exploration.