期刊文献+

石炭—二叠纪煤系烃源岩二次生烃模拟实验结果探讨 被引量:7

Discussion on Simulation Experiment Results of Secondary Hydrocarbon Gen eration from Carboniferous—Permian Coal-measure Source Rock
下载PDF
导出
摘要 模拟实验表明,煤系烃源岩在二次生烃模拟达到一次生烃终点温度时,已有新的烃类生成、排出,同时Ro值变大。分析认为,产生此结果的原因除了有模拟实验本身的因素外,很可能是由于煤系烃源岩对已生成的烃类具有较大的吸附作用,同时二次生烃又经历了一次热加载过程,一次生烃后烃类的排出使参与二次生烃的烃源岩的热动力学体系发生了变化,使得烃源岩中的有机质在达到一次生烃的温度时,变质程度已升高而再次生烃。上述结果解释了义155井中新生界不整合面上下Ro值的拟合曲线呈不连续的两段式现象,为孤北地区石炭—二叠纪煤系烃源岩晚期二次生烃提供了依据。 The simulation experiment results shows new hydrocarbons would be gene rated and expelled along with an increase in R0 values during the simulation of secondary hydrocarbon generation from coal-measure Source Rock, when a final tem perature of primary hydrocarbon generation is reached. The reasons, besides the affects of simulations themselves, mostly should be that coal-measure source roc k has much absorption to newly-generated hydrocarbons; and secondary hydrocarbon generation would experience another thermal loading, and changes in thermokinem atic system of the source rocks involved in secondary hydrocarbon generation wou ld occur because of hydrocarbon expulsion following primary hydrocarbon generati on. These would cause an advanced degeneration of organic matters in source rock s on due temperature of primary hydrocarbon generation, resulted in more hydroca rbons. These results may give an good explanation for the discontinuous dual-seg ment pattern with the fitting curve of R0 values from the strata above and below the Mesozoic--Cenozoic unconformity in Well Yi-155, Gubei area, furthermore, th ey provide an evidence for late secondary hydrocarbon generation from source roc ks in Carboniferous—Permian coal series.
出处 《天然气技术》 2007年第3期25-29,93-94,共5页 NATURAL GAS TECHNOLOGY
关键词 煤系烃源岩 二次生烃 模拟实验 Coal-measure source rock Secondary hydrocarbon generation Simulatio n experiment
  • 引文网络
  • 相关文献

参考文献4

二级参考文献22

共引文献71

同被引文献100

引证文献7

二级引证文献33

;
使用帮助 返回顶部