Abstract
Natural gas is composed largely of hydrocarbon gas, especially wet gas in the Bozhong sag. The carbon isotopic composition shows that the gas is of organic origin. The carbon isotopic values of ethane indicate that the natural gas is dominated by mixed gas with minor coal-generated gas and oil-type gas. A gas-source correlation study showed that the source rocks of natural gas are those of the Lower Dongying Formation, the Shahejie Formation and the pre-Tertiary. The natural gas is characterized by multi-source and continuous generation in the study area, indicating that gas exploration potential is good in the Bozhong sag.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Dai Jinxing (1992) Identification and distinction of various alkane gases [J]. Science in China (Series B). 2, 187–193 (in Chinese with English abstract).
Dai Jinxing (1985) Discussion on the identification indicators for coal-formed and oil-associated gases [J]. Acta Petrolei Sinica. 16, 31–38 (in Chinese with English abstract).
Dai Jinxing, Xia Xinyu, Qin Shengfei et al. (2003) Causation of partly reversed orders of δ13C in biogenic alkane gas in China [J]. Oil & Gas Geology. 24, 1–6 (in Chinese with English abstract).
Gang Wenzhe, Gao Gang, Ha Shisheng, and Zhu Lei (1997) Carbon isotope of ethane applied in the analyses of genetic types of natural gas [J]. Petroleum & Geology Experiment. 19, 164–167 (in Chinese with English abstract).
Ge Jiandang and Zu Weilin (2001) An analysis of offshore gas exploration potential in terms of comparison between offshore and onshore areas in Bohai Bay Basin [J]. China Offshore Oil and Gas (Geology). 15, 93–98 (in Chinese with English abstract).
Huang Zhengji and Li Xiufen (2001) Geochemical characteristics and natural gas sources of Bozhong depression, Bohai Bay Basin [J]. Petroleum Exploration and Development. 28, 17–21 (in Chinese with English abstract).
Li Fuping, Wen Zhigang, Tang Youjun, and Song Huanxin (2006) The valuation of the efficacy of the gas source rock the lower Tertiary stratum in Bozhong sag [J]. Journal of Oil and Gas Technology. 28, 16–18 (in Chinese with English abstract).
Li Jian, Hu Guoyi, Xie Zengye, Luo Xia, Li Zhisheng, Zhang Ying, and Zhu Huayin (2001) The Study on Physical and Chemical Simulation in Natural Gas Migration of Large-to-Medium-Size Gas Fields in China [M]. Petroleum Industry Press, Beijing (in Chinese).
Liu Wenhui and Xu Yongchang (1993) The type of mixed gases and their identification [J]. Acta Sedimentologica Sinica. 11, 44–51 (in Chinese with English abstract).
Song Yan and Xu Yongchang (2005) Origin and identification of natural gases [J]. Petroleum Exploration and Development. 32, 24–29 (in Chinese with English abstract).
Wen Zhigang, Mi Lijun, and Tang Youjun (2004) Geochemistry of the Natural Gas in the Central-Western of the Bohai Sea Area [M]. China University of Geosciences Press, Wuhan (in Chinese).
Wen Zhigang, Tang Youjun, Song Huanxin, Xu Yaohui, and Li Fuping (2005a) Composition and origin of natural gases in central Bohai Sea area, China [J]. Petroleum Exploration and Development. 32, 111–113 (in Chinese with English abstract).
Wen Zhigang, Tang Youjun, Li Fuping, Xu Yaohui, and Chen Dan (2005b) The study on geochemical characteristics and sources of condensate oil of Bozhong sag [J]. Journal of Oil and Gas Technology. 27, 293–295 (in Chinese with English abstract).
Xie Zengye, Li Jian, and Lu Xinwei (1999) An approach to the changing origin and classification of ethane carbon isotope in marine gas of Tarim Basin [J]. Petroleum Exploration and Development. 26, 27–29 (in Chinese with English abstract).
Zhou Xingxi and Wang Houjun (2000) Relationship between gas carbon isotope and maturity in the Craton Basin, Tarim Basin [J]. Chinese Journal of Geochemistry. 19, 349–357.
Zhu Weilin and Ge Jiandang (2001) Gas exploration potential in offshore Bohai Bay Basin [J]. Acta Petrolei Sinica. 22, 8–13 (in Chinese with English abstract).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Wen, Z., Tang, Y., Li, F. et al. A study on the geochemical characteristics of natural gas and gas sources in the Bozhong sag. Chin. J. of Geochem. 26, 402–406 (2007). https://doi.org/10.1007/s11631-007-0402-2
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/s11631-007-0402-2