学术新闻
Real-time monitoring of methane carbon isotope changes during shale gas release
页岩释气过程中甲烷碳同位素变化的实时监测
The shale samples are usually buried at a depth of several thousand meters underground. The regular changes in the whole process of gas release from shale cores are significant to reflect the development status of shale gas. However, a lot of shale gas has escaped when the samples are taken out of the wells and sent to the laboratories for testing, which makes it impossible to obtain the methane isotope variation of the lost gas.
由于页岩样品埋藏在地下数千米深度，当被钻取出井口并送到实验室检测的时候，页岩已经散失掉很多的页岩气，导致无法得到损失气部分甲烷同位素的变化特征。而页岩岩芯气体释放的全过程规律性变化对于反映页岩气开发状态具有重要意义。
TAO Cheng, ZHAI Changbo, YU Lingjie, SHEN Baojian, WANG Jie, YANG Huamin (Wuxi Research Institute of Petroleum Geology, PEPRIS, SINOPEC) published a paper titled “Carbon isotope fractionation characteristics during shale gas release” in “Petroleum Geology & Experiment”. A high pressure methane saturation and desorption device was developed and connected to the chromatographic-isotope mass spectrometry system to monitor the carbon isotope change of released CH4 on-line. A forward simulation of isotope variation during shale gas release was carried out. The problems of gas release and the following isotope data loss were solved, which provides an effective means for tracing the shale gas development process.
The research results show that the online detection device realizes real-time monitoring of methane carbon isotope under continuous flow, and the analysis accuracy is far better than the industry standard. At the same time, it realizes process automation control and can meet the needs of long-term detection.
研究结果表明，该套在线检测装置实现了连续流下甲烷碳同位素实时监测，分析精度远优于行业标准，同时实现过程自动化控制，可满足长周期检测的需求。
The results of the study were published in “Petroleum Geology & Experiment”, Volume 42, Issue 1, 2020.
研究结果发表于《石油实验地质》2020年第42卷第1期。
The relevant research paper is titled Carbon isotope fractionation characteristics during shale gas release and published in Petroleum Geology & Experiment, Jan. 28, 2020.
章出处和链接：
陶成 页岩释气过程中碳同位素的分馏特征
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