Academician Dai Jinxing has long been engaged in natural gas geology and geochemical researches,and has made prominent contributions to the establishment and development of China’s theory of coal-derived gas.He has o...Academician Dai Jinxing has long been engaged in natural gas geology and geochemical researches,and has made prominent contributions to the establishment and development of China’s theory of coal-derived gas.He has opened up new areas of coal-derived gas exploration,natural gas formation theory and formation“ control conditions of large ” medium gas fields.展开更多
Concerns about China’s energy security have escalated because of the country’s high dependency on oil and gas imports, so it is necessary to calculate the availability of domestic oil and gas resources and China’s ...Concerns about China’s energy security have escalated because of the country’s high dependency on oil and gas imports, so it is necessary to calculate the availability of domestic oil and gas resources and China’s ability to obtain foreign energy through trade. In this work,the calculation was done by using the energy return on investment（EROI） method. The results showed that the EROIstnd（i.e., standard EROI） of China’s oil and gas extraction decreased from approximately 17.3：1 in 1986 to 8.4：1 in 2003, but it increased to 12.2：1 in 2013. From a company-level perspective, the EROIstnddiffered for different companies and was in the range of（8–12）：1. The EROI2,d（EROI considering energy outputs after processed and direct energy inputs） for different companies was in the range of（3–7）：1. The EROI of imported oil（EROIIO）declined from 14.8：1 in 1998 to approximately 4.8：1 in 2014, and the EROI of imported natural gas（EROIING）declined from 16.7：1 in 2009 to 8.6：1 in 2014. In 2015, the EROIIO and EROIING showed a slight increase due to decreasing import prices. In general, this paper suggests that from a net energy perspective, it has become more difficult for China to obtain oil and gas from both domestic production and imports. China is experiencing an EROI decline, which demonstrates the risk in the use of unsustainable fossil resources.展开更多
文摘Academician Dai Jinxing has long been engaged in natural gas geology and geochemical researches,and has made prominent contributions to the establishment and development of China’s theory of coal-derived gas.He has opened up new areas of coal-derived gas exploration,natural gas formation theory and formation“ control conditions of large ” medium gas fields.
基金supported by the National Natural Science Foundation of China(No.71273277)the Philosophy and Social Sciences Major Research Project of the Ministry of Education(No.11JZD048)
文摘Concerns about China’s energy security have escalated because of the country’s high dependency on oil and gas imports, so it is necessary to calculate the availability of domestic oil and gas resources and China’s ability to obtain foreign energy through trade. In this work,the calculation was done by using the energy return on investment（EROI） method. The results showed that the EROIstnd（i.e., standard EROI） of China’s oil and gas extraction decreased from approximately 17.3：1 in 1986 to 8.4：1 in 2003, but it increased to 12.2：1 in 2013. From a company-level perspective, the EROIstnddiffered for different companies and was in the range of（8–12）：1. The EROI2,d（EROI considering energy outputs after processed and direct energy inputs） for different companies was in the range of（3–7）：1. The EROI of imported oil（EROIIO）declined from 14.8：1 in 1998 to approximately 4.8：1 in 2014, and the EROI of imported natural gas（EROIING）declined from 16.7：1 in 2009 to 8.6：1 in 2014. In 2015, the EROIIO and EROIING showed a slight increase due to decreasing import prices. In general, this paper suggests that from a net energy perspective, it has become more difficult for China to obtain oil and gas from both domestic production and imports. China is experiencing an EROI decline, which demonstrates the risk in the use of unsustainable fossil resources.
