Zhao Jing, Liang Qianyong, Xiong Yongqiang, Li Yun, Fang Chenchen. Application of headspace single-drop microextraction (HS-SDME) technique in geochemical exploration for petroleum[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2015, 37(2): 220-225. doi: 10.11781/sysydz201502220
Citation: Zhao Jing, Liang Qianyong, Xiong Yongqiang, Li Yun, Fang Chenchen. Application of headspace single-drop microextraction (HS-SDME) technique in geochemical exploration for petroleum[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2015, 37(2): 220-225. doi: 10.11781/sysydz201502220

Application of headspace single-drop microextraction (HS-SDME) technique in geochemical exploration for petroleum

doi: 10.11781/sysydz201502220
  • Received Date: 2013-12-04
  • Rev Recd Date: 2015-01-06
  • Publish Date: 2015-03-28
  • All surface geochemical exploration methods for oil and gas are based on the theory that hydrocarbons generated and trapped at depth seep in varying but detectable quantities to the surface, and the main components detected are usually C1-C5 hydrocarbons. The C1-C4 hydrocarbons could come from degradation of organic matter by microbial organisms, while the gasoline range hydrocarbons are totally sourced from thermogenic processes. Therefore, the detection of gasoline range hydrocarbons in soils or sediments could be the most direct evidence for hydrocarbon seepage and the method used to detect the C6-C12 range hydrocarbons could be a useful technique for surface geochemical exploration method for petroleum. However, because the concentration of gasoline range hydrocarbons in the soils or sediments are usually very low, and the present techniques for detecting those hydrocarbons are not adequate, the gasoline range hydrocarbons have seldom been used in surface geochemical exploration for oil and gas. In this study, the headspace single-drop microextraction (HS-SDME) technique coupled with gas chromatography-flame ionization detection (GC-FID) was employed to determine C6-C12 gasoline range hydrocarbons in well drilling mud sample. The results show that the C6-C12 hydrocarbons in the samples could be detected by HS-SDME, and the reservoir depth determined by the concentration of C6-C12 hydrocarbons was the same with the actual petroleum reservoir depth, which indicated further that the HS-SDME method could be used in geochemical exploration for petroleum.

     

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