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Article Navigation >  PETROLEUM GEOLOGY & EXPERIMENT  > 2018  >  40(3): 418-423
ZHANG Min, HE Yu, CHEN Zulin, GONG Jianming. Analysis method and geological significance of C5-C7 light hydrocarbons in natural gas hydrate in permafrost, Qilian Mountain[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2018, 40(3): 418-423. doi: 10.11781/sysydz201803418
Citation: ZHANG Min, HE Yu, CHEN Zulin, GONG Jianming. Analysis method and geological significance of C5-C7 light hydrocarbons in natural gas hydrate in permafrost, Qilian Mountain[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2018, 40(3): 418-423. doi: 10.11781/sysydz201803418
shu

Analysis method and geological significance of C5-C7 light hydrocarbons in natural gas hydrate in permafrost, Qilian Mountain

doi: 10.11781/sysydz201803418
  • 1.

    School of Earth Environment and Water Resources, Yangtze University, Wuhan, Hubei 430100, China

  • 2. Key Laboratory of Exploration Technology for Oil and Gas Research of Ministry of Education, Yangtze University, Wuhan, Hubei 430100, China

  • 3. Qingdao Institute of Marine Geology, Qingdao, Shandong 266071 China

  • Received Date: 2017-09-08
  • Rev Recd Date: 2018-03-20
  • Publish Date: 2018-05-28
    Abstract
  • A sample introduction device of vacuum thermal desorption, cold on-column and zero-pressure was built for the identification of C5-C7 light hydrocarbons in gas hydrate. On the basis of previous Kováts index research, 27 compounds of C5-C7 light hydrocarbons were identified, which provided a foundation for the geochemical study on light hydrocarbons in gas hydrate in the Juhugeng mining area, Muli coal field, Qilian Mountain. Two genetic types of gas hydrate in the Muli permafrost were divided into three types, including oil-type, coal-type and mixed-type gas based on the methylcyclohexane index. The mixed-type gas predominates in the Muli permafrost, while the other two types are in the minority.

     

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