| Hydrocarbon test in lower-layer atmosphere to predict deep-sea petroleum or hydrate in the Okinawa Trough: an example |
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| 作者姓名： | Gong Jianming Chen Jianwen Li Gang Zhang Xunhu Li Jipeng Huang Fulin |
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| 作者单位： | Gong Jianming1，Chen Jianwen 1，2，Li Gang1，Zhang Xunhua1，Li Jipeng3，Huang Fulin1 1. Qingdao Institute of Marine Geology，Qingdao 266071，China. 2. Ocean University of China，Qingdao 266003，China 3. Hefei Institute of Petroleum Chemical Exploration，China Petroleum Exploration and Development Research Institute，Hefei 230022，China |
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| 基金项目： | ThisstudywassupportedbyNationalFundamentalResearchandDevelopmentPlanningProjectundercontractNo .G2 0 0 0 0 4 6 7 |
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| 摘 要： | INTRODUCTIONItisaverypossiblenewmethodforustopredictdeep seapetroleumorhydratebymeansoftestinglighthydrocarbonandanalyzingCisotopicoflower layeratmosphericsamplesnearseasurface Thismethodisbasedonthetheoryofoilandgasmicro seepages,whichsuggeststhatsomegasessuchasCH4,CO2 etc .(Cheng ,1 999;Daietal.,1 994 ;Daietal.,1 995;Teder,1 985;Jonesetal.,1 985;Fangetal.,2 0 0 0 ;Guo ,1 995;Gongetal.,2 0 0 2 ;Huangetal.,1 998) ,willcontinuallymigrateupwardsintofracturesandporosityofrocks ,seabedse…
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| 关 键 词： | Lower-layer atmosphere hydrocarbon test C isotopic analysis deep-sea petroleum gas hydrate |
| 收稿时间： | 2003/5/15 0:00:00 |
| 修稿时间： | 2003/8/24 0:00:00 |
Hydrocarbon test in lower-layer atmosphere to predict deep-sea petroleum or hydrate in the Okinawa Trough: an example |
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| Gong Jianming,Chen Jianwen,Li Gang,Zhang Xunhu,Li Jipeng,Huang Fulin.Hydrocarbon test in lower-layer atmosphere to predict deep-sea petroleum or hydrate in the Okinawa Trough: an example[J].Acta Oceanologica Sinica,2003,22(4):569-576. |
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| Authors: | Gong Jianming Chen Jianwen Li Gang Zhang Xunhu Li Jipeng and Huang Fulin |
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| Institution: | 1.Qingdao Institute of Marine Geology, Qingdao 266071, China2.Qingdao Institute of Marine Geology, Qingdao 266071, China;Ocean University of China, Qingdao 266003, China3.Hefei Institute of Petroleum Chemical Exploration, China Petroleum Exploration and Development Research Institute, Hefei 230022, China |
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| Abstract: | Light hydrocarbon (methane, ethane, propane, butane and CO2) test and C isotopic analysis of CO2 are conducted for over 100 lower-layer atmospheric samples from the East China Sea slope and the Okinawa Trough. The results show that the lower-layer atmosphere mainly consists of CO2 and then of CH4, and the CO2 concentrations are calculated to have a high average value of 0.87 ω/10-2 ,about three times that of the regional background (0.3 ω/10-2). The result also shows that the average value of C isotope - 20.8 × 10 -3 is given to the CO2, inferring that it is inorganic gas.Thus, for the future ' s work in the Okinawa Trough, special attention should be paid to CO2 hydrate,which is very possibly an important hydrate type. |
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| Keywords: | Lower-layer atmosphere hydrocarbon test C isotopic analysis deep-sea petroleum gas hydrate |
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