Geology and hydrocarbon accumulations in the deepwater of the northwestern South China Sea—with focus on natural gas

WANG Zhenfeng; SUN Zhipeng; ZHANG Daojun; ZHU Jitian; LI Xushen; HUANG Baojia; GUO Minggang; JIANG Rufeng

doi:10.1007/s13131-015-0715-7

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Article Navigation > Acta Oceanologica Sinica > 2015 > 34(10): 57-70

WANG Zhenfeng, SUN Zhipeng, ZHANG Daojun, ZHU Jitian, LI Xushen, HUANG Baojia, GUO Minggang, JIANG Rufeng. Geology and hydrocarbon accumulations in the deepwater of the northwestern South China Sea—with focus on natural gas[J]. Acta Oceanologica Sinica, 2015, 34(10): 57-70. doi: 10.1007/s13131-015-0715-7

Citation:

WANG Zhenfeng, SUN Zhipeng, ZHANG Daojun, ZHU Jitian, LI Xushen, HUANG Baojia, GUO Minggang, JIANG Rufeng. Geology and hydrocarbon accumulations in the deepwater of the northwestern South China Sea—with focus on natural gas[J]. Acta Oceanologica Sinica, 2015, 34(10): 57-70. doi: 10.1007/s13131-015-0715-7

Citation:

WANG Zhenfeng, SUN Zhipeng, ZHANG Daojun, ZHU Jitian, LI Xushen, HUANG Baojia, GUO Minggang, JIANG Rufeng. Geology and hydrocarbon accumulations in the deepwater of the northwestern South China Sea—with focus on natural gas[J]. Acta Oceanologica Sinica, 2015, 34(10): 57-70. doi: 10.1007/s13131-015-0715-7

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Geology and hydrocarbon accumulations in the deepwater of the northwestern South China Sea—with focus on natural gas

doi: 10.1007/s13131-015-0715-7

Zhanjiang Branch of China National Offshore Oil Corporation (CNOOC) Limited, Zhanjiang 524057, China

Received Date: 2014-06-20
Rev Recd Date: 2014-09-28

Abstract

Abstract

vThe deepwater of the northwestern South China Sea is located in the central to southern parts of the Qiongdongnan Basin (QDN Basin), which is a key site for hydrocarbon exploration in recent years. In this study, the authors did a comprehensive analysis of gravity-magnetic data, extensive 3D seismic survey, cores and cuttings, paleontology and geochemical indexes, proposed the mechanism of natural gas origin, identified different oil and gas systems, and established the model of hydrocarbon accumulations in the deep-water region. Our basin tectonic simulation indicates that the evolution of QDN Basin was controlled by multiple-phased tectonic movements, such as Indochina-Eurasian Plate collision, Tibetan Uplift, Red River faulting and the expansion of the South China Sea which is characterized by Paleogene rifting, Neogene depression, and Eocene intensive faulting and lacustrine deposits. The drilling results show that this region is dominated by marine-terrestrial transitional and neritic-bathyal facies from the early Oligocene. The Yacheng Formation of the early Oligocene is rich in organic matter and a main gas-source rock. According to the geological-geochemical data from the latest drilling wells, Lingshui, Baodao, Changchang Sags have good hydrocarbon-generating potentials, where two plays from the Paleogene and Neogene reservoirs were developed. Those reservoirs occur in central canyon structural-lithologic trap zone, Changchang marginal trap zone and southern fault terrace of Baodao Sag. Among them, the central canyon trap zone has a great potential for exploration because the various reservoir-forming elements are well developed, i.e., good coal-measure source rocks, sufficient reservoirs from the Neogene turbidity sandstone and submarine fan, faults connecting source rock and reservoirs, effective vertical migration, late stage aggregation and favorable structural-lithological composite trapping. These study results provide an important scientific basis for hydrocarbon exploration in this region, evidenced by the recent discovery of the significant commercial LS-A gas field in the central canyon of the Lingshui Sag.
- South China Sea,
- deepwater,
- natural gas,
- petroleum system,
- central canyon,
- reservoir-forming conditions,
- Qiongdongnan Basin

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References(24)

References

Beck R A, Burbank D W, Sercombe W J, et al. 1995. Stratigraphic evid- ence for an early collision between northwest India and Asia.

Nature, 373(65089): 55-58 Bird S, Geno K, Enciso G. 2001. Potential deep water petroleum sys- tems, Ivory Coast, West Africa. In: Fillon R H, Rosen N C, Weimer P, et al., eds. Petroleum Systems of Deep-water Basins: Global and Gulf and Mexico Experience. Houston: GCS, 561-571

Blow W H. 1979. The Cenozoic Globigerinida. Leiden: E J Brill, 3: 1-1413

Chapin M A, Davies P, Gibson J L, et al. 1994. Reservoir architecture of turbidite sheet sandstones in laterally extensive outcrops, Ross formation, western Ireland. In: Weimer P, Bouma A H, Perkins B F, eds. Submarine Fans and Turbidite Systems. Gulf Coast Section SEPM Foundation 15th Annual Research Confer-ence. Austin: Gulf Coast Association of Geological Societies Transactions, 53-68

Demaison G, Huizinga B J. 1991. Genetic classification of petroleum systems. AAPG Bulletin, 75(10): 1626-1643

Dolson J C, Boucher P J, Siok S, et al. 2005. Key challenges to realizing full potential in an emerging giant gas province: Nile Delta/Mediterranean offshore, deep water, Egypt. In: Dore A G, Vining B, eds. Petroleum Geology: Northwest Europe and Glob-al Perspective—Proceedings of the 6th Petroleum Geology Conference. London: Geological Society of London, 607-624

Gong Zaisheng, Li Sitian. 2004. Dynamic Research of Oil and Gas Ac-cumulation in Northern Marginal Basins of South China Sea (in Chinese). Beijing: Science Press, 339

Gradstein F M, Ogg J G, Smith A G. 2005. A Geologic Time Scale 2004. Cambridge: Cambridge University Press, 1-589

Haack R C, Sundararaman J, Diedjomahor O, et al. 2000. Niger Delta petroleum systems, Nigeria. In: Mello M R, Katz B J, eds. Petro-leum Systems of South Atlantic Margins. AAPG Memoir, 73: 213-231

Klootwijk C T, Conaghan P J, Powell C McA. 1985. The Himalayan Arc: Large scale continental subduction, oroclinal bending and backarc spreading. Earth Planet Sci Lett, 75(2-3): 167-183

Li Xuxuan, Zhong Zhihong, Dong Weiliang, et al. 2006. Paleogene rift structure and its dynamics of Qiongdongnan Basin. Petroleum Exploration and Development (in Chinese), 33(6): 713-721

Liu Jianbao, Sun Zhen, Liu Yanbin, et al. 2012. Progress of Cenozoic tectonic studies in Qiongdongnan Basin. Marine Geology Fron-tier (in Chinese), 28(4): 1-9

Magoon L B, Beaumont E A. 1999. Petroleum systems. In: Beaumont E A, Foster N H, eds. Exploring for Oil and Gas Traps: Treatise of Petroleum Geology, Handbook of Petroleum Geology. Tulsa: The American Association of Petroleum Geologists, 1-34

Magoon L B, Dow W G. 1994. The petroleum system. In: Magoon L B, Dow W G, eds. The Petroleum System from Source to Trap. AAPG Memoir, 60: 3-24

Martini E. 1971. Standard tertiary and quaternary calcareous Nanno-plankton Zonation. In: Farinaccil A, ed. Proceedings of the First Planktonic Conference. Roma: Tecnoscienza Roma, 739-785

Pang Xiong, Chen Changmin, Peng Dajun, et al. 2007. The Pearl River Deepwater Fan Systems and Petroleum in South China Sea. Beijing: Science Press, 361

Pettingill H S. 2001. Giant field discoveries of the 1990s. The Leading Edge, 20(7): 698-704

Pettingill H S, Weimer P. 2002. Worldwide deepwater exploration and production: past, present, and future. The Leading Edge, 21(4): 371-376

Wang Zhenfeng. 2012. Important deepwater hydrocarbon reservoirs: the central canyon system in the Qiongdongnan basin. Acta Sedimentologica Sinica (in Chinese), 30(4): 646-653

Wang Zhenfeng, Li Xushen, Sun Zhipeng, et al. 2011. Hydrocarbon accumulation conditions and exploration potential in the deep-water region, Qiongdongnan basin. China Offshore Oil and Gas (in Chinese), 23(1): 7-13

Weimer P, Pettingill H S. 2007. Deep-water exploration and produc-tion: A global overview. In: Nilsen T H, Shew R D, Steffens G S, et al., eds. Atlas of Deep-Water Outcrops: AAPG Studies in Geo-logy. No. 56. Tulsa: The American Association of Petroleum Geologists, 1-29

Weimer P, Slatt R M. 2007. Introduction to the Petroleum Geology of Deepwater Settings: AAPG Studies in Geology. No. 57. Tulsa: The American Association of Petroleum Geologists, 1-241

Zhang Cuimei, Wang Zhenfeng, Sun Zhipeng, et al. 2013. Structural differences between the western and eastern Qiongdongnan Basin: evidence of Indochina block extrusion and South China Sea seafloor spreading. Marine Geophysical Research, 34(3-4):309-323

Zhu Weilin, Zhang Gongcheng, Yang Shaokun, et al. 2007. Gas Geology in the Continental Margin of the Northern South China Sea (in Chinese). Beijing: Petroleum Industry Publishing Press, 391

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