采用全岩开放体系程序升温热模拟实验装置,对哈2井三叠系灰黑色泥岩样品进行了不同升温速率对产气率影响的模拟实验研究,结果表明:在350~500℃期间,升温速率快时(20℃/m in)测得的产气量与升温速率慢时(5℃/min)测得的产气量比较接近;在500℃以上,升温速率快时(20℃/m in)测得的产气量大于升温速率慢时(5℃/min)测得的产气量。这一结果与前人所做的封闭体系下升温速率越慢产气量越高的结论正好相反,认为这主要是因为本次实验采用的是开放体系,其与封闭体系下的实验反应环境和反应过程不同,升温速率对产气率的影响可能与实验体系有一定关系。

By means of whole rock thermal simulating experiment in the open system,the authors have studied the effect of different heating-rate to the hydrocarbon generation of source rock(grey-black mudstone of Trias from well Ha 2 in Tarim basin).The result of experiment indicate the hydrocarbon generation of high heating-rate is near to that of low heating-rate between 350℃~500℃,while after 500℃,the hydrocarbon generation of high heating-rate is more than that of low heating-rate.In the course of heating-rate enhancing,the secondary react ion in molecules of organic matter will increase,so the hydrocarbon generation i s higher than that of low heating-rate. The result of this experiment is in op position to that of the predecessor, because the environment and course of react ion in the open system are different from that in close system. The effect of h eating-rate to the hydrocarbon generation have  relation to the system of expe riment.