Oil and gas exploration potential in Beikang Basin, Nansha sea area

doi:10.3969/j.issn.1672-7703.2017.03.005

Abstract

Abstract: Based on the extensive investigation of related literatures in China and abroad, the latest seismic data reprocessing and interpretation results, and the latest collections of foreign geological studies, systemic summarization and analysis were completed on the tectonic evolution, sedimentary characteristics, and petroleum geological conditions in the Beikang Basin. The results show that the Beikang Basin generally experienced three tectonic evolution stages, i.e. fault depression, depression and regional subsidence, giving rise to delta facies, littoral neritic facies, and bathyal-abyssal facies, or carbonate platform in local paleo-uplifts. Three sets of source rocks are developed in the Middle Eocene, the Upper Eocene-Lower Oligocene, and the Upper Oligocene-Lower Miocene, respectively. Oil and gas reservoirs have been identified within the Paleogene sandstone and the Middle Miocene limestone/reef limestone. The Pliocene-Quaternary mudstone acts as the regional caprock. In conclusion, the Beikang Basin has huge potentials of oil and gas resources, with geological resources of oil and gas of 8.86×10⁸t and 14855×10⁸m³, respectively.

Key words: Beikang Basin, tectonic evolution, sedimentary characteristics, petroleum geological conditions, exploration potential

CLC Number:

TE21

Zhang Houhe, Liu Peng, Liao Zongbao, He Shuanzhu, Zhu Xiaomin. Oil and gas exploration potential in Beikang Basin, Nansha sea area[J]. China Petroleum Exploration, 2017, 22(3): 40-48.

References

[1] 张莉,王嘹亮,易海. 北康盆地的形成与演化[J]. 中国海上油气(地质),2003,17(4):245-248. Zhang Li, Wang Liaoliang, Yi Hai. Forming and evolution of Beikang Basin[J]. China Offshore Oil and Gas(Geology), 2003,17(4):245-248.
[2] 刘世翔,张功成,赵志刚,谢晓军,王龙,宋双,等. 南海构造旋回对曾母盆地油气成藏的控制作用[J]. 中国石油勘探,2016,21(2):37-44. Liu Shixiang, Zhang Gongcheng, Zhao Zhigang, Xie Xiaojun, Wang Long, Song Shuang, et al. Control of tectonic cycle in South China Sea over hydrocarbon accumulation in the Zengmu Basin[J]. China Petroleum Exploration, 2016,21(2):37-44.
[3] 夏斌. 南沙海域盆地构造演化与有利勘探区带研究[R]."十一五"课题研究报告,2010. Xia Bin. Tectonic evolution and favorable exploration zone research of Nansha sea area[R]. The 11^th five-year research report, 2010.
[4] 郭佳,谢晓军,刘世翔,王一博,宋双,胡文博,等. 南海曾母盆地新生代沉积体系特征[J]. 中国石油勘探,2016,21(4):99-107. Guo Jia, Xie Xiaojun, Liu Shixiang, Wang Yibo, Song Shuang, Hu Wenbo, et al. Cenozoic sedimentary systems in Zengmu Basin, South China Sea[J]. China Petroleum Exploration, 2016,21(4):99-107.
[5] 姚永坚,夏斌,徐行. 南海南部海域主要沉积盆地构造演化特征[J]. 南海地质研究,2005:1-11. Yao Yongjian, Xia Bin, Xu Xing. The sedimentary basin tectonic evolution characteristics of major basins in southern south China sea[J]. Gresearch of Eological South China Sea, 2005:1-11.
[6] 金庆焕,李唐根. 南沙海域区域地质构造[J]. 海洋地质与第四纪地质, 2000,20(1):1-8. Jin Qinghuan, Li Tanggen. Geological tectonic of Nansha sea area[J]. Marine Geology and Quaternary Geology, 2000, 20(1):1-8.
[7] 栾锡武,张亮. 南海构造演化模式:综合作用下的被动扩张[J]. 海洋地质与第四纪地质,2009,29(6):59-74. Luan Xiwu, Zhang Liang. Tectonic evolution model of Nansha sea area:under the combined action of passive expansion[J]. Marine Geology and Quaternary Geology, 2009,29(6):59-74.
[8] 魏喜. 南沙海域断裂系统对含油气盆地的控制[J]. 海洋科学, 2005,29(6):66-68. Wei Xi. Nansha sea area fracture systems control of the petroliferous basin[J]. Marine Science, 2005,29(6):66-68.
[9] 刘振湖,郭丽华. 北康盆地沉降作用与构造运动[J]. 海洋地质与第四纪地质,2003,23(2):51-57. Liu Zhenhu, Guo Lihua. Subsidence and tectonic movement of Beikang Basin[J]. Marine Geology and Quaternary Geology, 2003,23(2):51-57.
[10] 王嘹亮,梁金强,曾繁彩. 北康盆地新生代沉积特征[J]. 南海地质研究,2000:58-72. Wang Liaoliang, Liang Jinqiang, Zeng Fancai, Cenozoic sedimentary characteristics of Beikang Basin[J]. Gresearch of Eological South China Sea, 2000:58-72.
[11] 冯杨伟,张功成,屈红军. 南海新生代生物礁发育规律与油气勘探潜力[J]. 中国石油勘探,2016,21(6):18-25. Feng Yangwei, Zhang Gongcheng, Qu Hongjun. Development regularity and hydrocarbon exploration potential of Cenozoic reef reservoir, South China Sea[J]. China Petroleum Exploration, 2016,21(6):18-25.
[12] 刘振湖. 南海南沙海域沉积盆地与油气分布[J]. 大地构造与成矿学, 2005,29(3):410-417. Liu Zhenhu. Sedimentary basin and hydrocarbon distribution of Nansha sea area in South China sea[J]. Geoteconica Et Metallogenia, 2005,29(3):410-417.
[13] 刘振湖. 南沙海域沉积盆地与油气地质条件[J]. 大地构造与成矿学, 2005,15(3):35-45. Liu Zhenhu. Sedimentary basin and hydrocarbon geological condition of Nansha sea area[J]. Geoteconica Et Metallogenia, 2005,15(3):35-45.
[14] 姚伯初,刘振湖. 南沙海域沉积盆地及油气资源分布[J]. 中国海上油气,2006,18(3):150-160. Yao Bochu, Liu Zhenhu. Sedimentary basin and oil and gas resources distribution of Nansha sea area[J]. China Offshore Oil and Gas, 2006,18(3):150-160.
[15] 杨木壮,陈强. 南沙海域石油地质概况[J]. 海洋地质动态,1995(11):5-7. Yang Muzhuang, Chen Qiang. Petroleum geology of Nansha sea area[J]. Marine Geology Letters, 1995(11):5-7.
[16] 张功成,谢晓军,王万银,刘世翔,王一博,董伟,等. 中国南海含油气盆地构造类型及勘探潜力[J]. 石油学报,2013,34(4):611-627. Zhang Gongcheng, Xie Xiaojun, Wang Wanyin, Liu Shixiang, Wang Yibo, Dong Wei, et al. The petroliferous basin tectonic styles and exploration potential of south China sea[J]. Acta Petrolei Sinica, 2013,34(4):611-627.
[17] 李宗飞. 中国南沙海域的油气资源及地质特征综述[J]. 特种油气藏, 2004,11(5):1-4. Li Zongfei. The hydrocarbon resources and overview of geology characteristics in China Nansha sea area[J]. Special oil & Gas Reservoirs, 2004,11(5):1-4.
[18] 李金有,郑丽辉. 南海沉积盆地石油地质条件研究[J]. 特种油气藏, 2007,14(2):22-26. Li Jinyou, Zheng Lihui. Sedimentary basins hydrocarbon geological conditions research of south China sea[J]. Special Oil & Gas Reservoirs, 2007,14(2):22-26.
[19] 张智武,吴世敏,樊开意. 南沙海区沉积盆地油气资源评价及重点勘探地区[J]. 大地构造与成矿学,2005,29(3):418-424. Zhang Zhiwu, Wu Shimin, Fan Kaiyi. The sedimentary basin petroleum resources assessment and important exploration areas of Nansha sea area[J]. Geotectonica et Metallogenia, 2005,29(3):418-424.
[20] 吴炳伟. 南沙海域主要沉积盆地资源潜力分析[J]. 海洋石油, 2007,6(3):30-35. Wu Bingwei. The major sedimentary basins resource potential analyses of Nansha sea area[J]. Offshore Oil,2007,6(3):30-35.
[21] 梁金强,张光学,张莉,徐向华. 南海西南部潜山披覆构造油气成藏条件分析[J]. 南海地质研究,1998:56-70. Liang Jinqiang, Zhang Guangxue, Zhang Li, Xu Xianghua. Southwestern south China sea drape structure over buried hill hydrocarbon accumulation conditions analysis[J]. Gresearch of Eological South China Sea, 1998:56-70.
[22] 刘宝明. 南海西南部含油气区圈闭类型与成因分析[J]. 石油实验地质, 1999,21(4):302-306. Liu Baoming. Southwestern south China sea petroliferous area trap type and cause analysis[J]. Petroleum Geology & Experiment, 1999,21(4):302-306.
[23] 刘宝明,夏斌,刘振湖,王衍棠. 南海西南部海区油气富集成藏类型分析[J]. 石油实验地质,2002,24(4):322-333. Liu Baoming, Xia Bin, Liu Zhenhu, Wang Yantang, et al. Oil and gas reservoir rich integration type analysis of southwestern south China sea area[J]. Petroleum Geology & Experiment, 2002,24(4):322-333.