煤排烃史系统动力学模拟

煤成烃研究的最新成果表明，反馈控制作用是影响煤排烃的一个重要因素。据此在常规排烃史模拟方法的基础上引入“系统论”和“系统动力学”的方法，建立了煤排烃史系统的系统动力学模型。模型包括古压力史、烃饱和度发育史和排烃量史等三个主要的子系统模型。该模型不仅较好地解决了煤排烃系统中存在的反馈控制作用问题， 而且较好地解决了系统中存在的参数的非线性特征问题。最后，将模型应用于辽河盆地东部坳陷荣兴屯地区煤排烃史研究，其结果表明，该区煤岩进入生、排烃高峰是在东营组三段沉积末以后，东营组一段沉积末以前，目前仍处于生、排烃高峰，且有近80%的油保留在深部地层中没有排出来。

Simulation of System Dynamics in the Hydrocarbon Expulsion of Coal

Recent studies have indicated that the feedback control is an important factor influencing the results of hydrocarbon expulsion of coal. Based on the principle of system theory and simulation methods, a model for the system dynamics of hydrocarbon expulsion of coal is built, which includes three subsystems of paleo-pressure, saturation of hydrocarbon and process of hydrocarbon expulsion. A program based on the new model is designed and used to study the characteristics of hydrocarbon expulsion of coal in the Rongxintun region of the East Liaohe basin. Results of this study proved that the model could be applied to solve many problems, such as feedback control and non-linear features of hydrocarbon expulsion.