Data Report: Molecular and Isotopic Compositions of the Extracted Gas from China's First Offshore Natural Gas Hydrate Production Test in South China Sea

作     者：Ye, Jianliang Qin, Xuwen Qiu, Haijun Xie, Wenwei Lu, Hongfeng Lu, Cheng Zhou, Jianhou Liu, Jiyong Yang, Tianbang Cao, Jun Sa, Rina 

作者机构：China Geol Survey Guangzhou Marine Geol Survey Guangzhou 510760 Guangdong Peoples R China 

出 版 物：《ENERGIES》 (能源)

年 卷 期：2018年第11卷第10期

页      面：2793-2793页

核心收录：

学科分类：0820[工学-石油与天然气工程] 08[工学] 0807[工学-动力工程及工程热物理] 

基　　金：GH Programs of China Geological Survey [DD20189320  DD20160221] 

主　　题：isotopic composition methane gas hydrate South China Sea 

摘      要：Three hundred gas samples recovered from SHSC-4 during China s first gas hydrate production test in the South China Sea were examined for gas component and isotopic composition. According to the gas chromatography analysis, all the gas samples from SHSC-4 are predominated by CH4, with minor N-2 + O-2, as well as trace amounts of CO2, C2H6, and C3H8. No H2S was detected. The molecular and isotopic data of the gas samples fall into the region of mixed origin on the plot of C-1/(C-2 + C-3) - C-13(1), which is close to the microbial origin. The discrimination diagram of C-13(1) - D-CH4 shows that the methane in all of the samples is of microbial origin, and is derived from the CO2 reduction.