超伸展陆缘盆地深部结构及油气勘探意义

doi:10.11743/ogg20230310

Abstract

Abstract:

The passive continental margin basin in the northern South China Sea is an important oil and gas base in China’s offshore area. This paper reveals depositional filling characteristics and stratigraphic patterns of hyperextended continental margin rift basins based on coupling analysis of the deformation of deep crust and basin filling in the passive continental margin through comprehensive analyses of massive seismic and drilling data from the Qiongdongnan Basin of South China Sea. The results show that the Qiongdongnan Basin， located on the western tip of the northwest sub-basin of the South China Sea， is once a failed continental margin rift basin and presents now as a neck and distal zone along the central depression belt after lithospheric detachment and thinning. The rifting period contains three stretching stages. During the early stage， the formation of isolated rifted basin is characterized by high-angle positive faults. During the detachment active stage， the formation of detachment rifted basin is characterized by low-angle detachment faults with their active time obviously characterized by an east-west migration. And during the late rifting-depression stage， the depocenter is located in the center of the depression. The migration characteristics of differential deformation tectonic movement define the unique deep structure pattern of the Qiongdongnan Basin and lead to obvious differences in depositional fillings and stratigraphic patterns in different tectonic units， especially in depositional systems， where fan delta deposits dominate the main detachment fault side and braided delta deposits occupy the opposite rolling anticline. These factors restricted the distribution of source rocks and deep reservoirs during the rifting period， which in turn constrained geological conditions of hydrocarbon generation and accumulation. Therefore， the deep architecture of hyperextended continental marginal rift basins established based on non-transient breaking-up process of the lithosphere and depositional filling characteristics have important guiding significance for hydrocarbon exploration in the Qiongdongnan Basin， and may serve as reference for the study of deep stratigraphic pattern and depositional filling in passive continental margin basins.

Key words: stratigraphic pattern, detachment basin, failed passive marginal rift, Qiongdongnan Basin, South China Sea

CLC Number:

TE121.1

Keqiang WU, Xinong XIE, Jianxiang PEI, Jianye REN, Li YOU, Tao JIANG, Yongbin QUAN. Deep architecture of hyperextended marginal basin and implications for hydrocarbon exploration：A case study of Qiongdongnan Basin[J]. Oil & Gas Geology, 2023, 44(3): 651-661.

Figures/Tables 8

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References 35

1	PÉRON-PINVIDIC G， MANATSCHAL G. The final rifting evolution at deep magma-poor passive margins from Iberia-Newfoundland： a new point of view［J］. International Journal of Earth Sciences， 2009， 98（7）： 1581-1597.
2	GEOFFROY L， BUROV E B， WERNER P. Volcanic passive margins： another way to break up continents［J］. Scientific Reports， 2015， 5（1）： 14828.
3	MANATSCHAL G. New models for evolution of magma-poor rifted margins based on a review of data and concepts from West Iberia and the Alps［J］. International Journal of Earth Sciences， 2004， 93（3）： 432-466.
4	MOHN G， MANATSCHAL G， BELTRANDO M， et al. The role of rift-inherited hyper-extension in Alpine-type orogens［J］. Terra Nova， 2014， 26（5）： 347-353.
5	HAUPERT I， MANATSCHAL G， DECARLIS A， et al. Upper-plate magma-poor rifted margins： Stratigraphic architecture and structural evolution［J］. Marine and Petroleum Geology， 2016， 69： 241-261.
6	REN Jianye， ZHANG Daojun， TONG Dianjun， et al. Characterising the nature， evolution and origin of detachment fault in central depression belt， Qiongdongnan Basin of South China Sea： Evidence from seismic reflection data［J］. Acta Oceanologica Sinica， 2014， 33（12）： 118-126.
7	XIE Xinong， REN Jianye， PANG Xiong， et al. Stratigraphic architectures and associated unconformities of Pearl River Mouth Basin during rifting and lithospheric breakup of the South China Sea［J］. Marine Geophysical Research， 2019， 40（2）： 129-144.
8	孙珍，李付成，林间，等. 被动大陆边缘张-破裂过程与岩浆活动：南海的归属［J］. 地球科学， 2021， 46（3）： 770-789.
	SUN Zhen， LI Fucheng， LIN Jian， et al. The rifting-breakup process of the passive continental margin and its relationship with magmatism： The attribution of the South China Sea［J］. Earth Science， 2021， 46（3）： 770-789.
9	LEI Chao， ALVES T M， REN Jianye， et al. Rift structure and sediment infill of hyperextended continental crust： Insights from 3D seismic and well data （Xisha Trough， South China Sea）［J］. Journal of Geophysical Research： Solid Earth， 2020， 125（5）： e2019JB018610.
10	雷超，任建业，裴健翔，等. 琼东南盆地深水区构造格局和幕式演化过程［J］. 地球科学（中国地质大学学报）， 2011， 36（1）： 151-162.
	LEI Chao， REN Jianye， PEI Jianxiang， et al. Tectonic framework and multiple episode tectonic evolution in deepwater area of Qiongdongnan Basin， northern continental margin of South China Sea［J］. Earth Science（Journal of China University of Geosciences）， 2011， 36（1）： 151-162.
11	解习农，任建业，王振峰，等. 南海大陆边缘盆地构造演化差异性及其与南海扩张耦合关系［J］. 地学前缘， 2015， 22（1）： 77-87.
	XIE Xinong， REN Jianye， WANG Zhenfeng， et al. Difference of tectonic evolution of continental marginal basins of South China Sea and relationship with SCS spreading［J］. Earth Science Frontiers， 2015， 22（1）： 77-87.
12	解习农，赵帅，任建业，等. 南海后扩张期大陆边缘闭合过程及成因机制［J］. 地球科学， 2022， 47（10）： 3524-3542.
	XIE Xinong， ZHAO Shuai， REN Jianye， et al. Marginal sea closure process and genetic mechanism of South China Sea during post-spreading period［J］. Earth Science， 2022， 47（10）： 3524-3542.
13	LYMER G， CRESSWELL D J F， RESTON T J， et al. 3D development of detachment faulting during continental breakup［J］. Earth and Planetary Science Letters， 2019， 515： 90-99.
14	CONTRUCCI I， MATIAS L， MOULIN M， et al. Deep structure of the West African continental margin （Congo， Zaïre， Angola）， between 5°S and 8°S， from reflection/refraction seismics and gravity data［J］. Geophysical Journal International， 2004， 158（2）： 529-553.
15	任建业，雷超. 莺歌海—琼东南盆地构造-地层格架及南海动力变形分区［J］. 地球物理学报， 2011， 54（12）： 3303-3314.
	REN Jianye， LEI Chao. Tectonic stratigraphic framework of Yinggehai-Qiongdongnan basins and its implication for tectonic province division in South China Sea［J］. Chinese Journal of Geophysics， 2011， 54（12）： 3303-3314.
16	赵民，张晓宝，吉利明，等. 琼东南盆地构造演化特征及其对油气藏的控制浅析［J］. 天然气地球科学， 2010， 21（3）： 494-502.
	ZHAO Min， ZHANG Xiaobao， JI Liming， et al. Characteristics of tectonic evolution in the Qiongdongnan Basin and brief discussion about its controlling on reservoirs［J］. Natural Gas Geoscience， 2010， 21（3）： 494-502.
17	任建业，庞雄，雷超，等. 被动陆缘洋陆转换带和岩石圈伸展破裂过程分析及其对南海陆缘深水盆地研究的启示［J］. 地学前缘， 2015， 22（1）： 102-114.
	REN Jianye， PANG Xiong， LEI Chao， et al. Ocean and continent transition in passive continental margins and analysis of lithospheric extension and breakup process： Implication for research of the deepwater basins in the continental margins of South China Sea［J］. Earth Science Frontiers， 2015， 22（1）： 102-114.
18	谢玉洪，童传新，范彩伟，等. 琼东南盆地断裂系统特征与演化［J］. 大地构造与成矿学， 2015， 39（5）： 795-807.
	XIE Yuhong， TONG Chuanxin， FAN Caiwei， et al. Characteristics and evolution of fault system in Qiongdongnan Basin［J］. Geotectonica et Metallogenia， 2015， 39（5）： 795-807.
19	谢玉洪，张功成，唐武，等. 南海北部深水区油气成藏理论技术创新与勘探重大突破［J］. 天然气工业， 2020， 40（12）： 1-11.
	XIE Yuhong， ZHANG Gongcheng， TANG Wu， et al. Theoretical and technological innovation of oil and gas accumulation and major exploration breakthroughs in deep-water areas， northern South China Sea［J］. Natural Gas Industry， 2020， 40（12）： 1-11.
20	QIU Ning， WANG Zhenfeng， XIE Hui， et al. Geophysical investigations of crust-scale structural model of the Qiongdongnan Basin， Northern South China Sea［J］. Marine Geophysical Research， 2013， 34（3）： 259-279.
21	徐长贵，尤丽. 琼东南盆地松南—宝岛凹陷北坡转换带特征及其对大中型气田的控制［J］. 石油勘探与开发， 2022， 49（6）： 1061-1072.
	XU Changgui， YOU Li. North slope transition zone of Songnan-Baodao sag in Qiongdongnan Basin and its control on medium and large gas fields， South China Sea［J］. Petroleum Exploration and Development， 2022， 49（6）： 1061-1072.
22	李增学，刘莹，李晓静，等. 琼东南盆地古近纪泥炭沼泽破坏与重建作用对煤型源岩物质形成的控制［J］. 石油与天然气地质， 2022， 43（6）： 1309-1320.
	LI Zengxue， LIU Ying， LI Xiaojing， et al. The control of Paleogene peat swamp destruction and reconstruction on the formation of coal-type source material in the Qiongdongnan Basin［J］. Oil & Gas Geology， 2022， 43（6）： 1309-1320.
23	张功成，陈莹，李增学，等. 中国海域煤型油气成因理论［J］. 石油与天然气地质， 2022， 43（3）： 553-565.
	ZHANG Gongcheng， CHEN Ying， LI Zengxue， et al. Theory on genesis of coaliferous petroleum in the China Sea［J］. Oil & Gas Geology， 2022， 43（3）： 553-565.
24	ZHU Weilin， HUANG Baojia， MI Lijun， et al. Geochemistry， origin， and deep-water exploration potential of natural gases in the Pearl River Mouth and Qiongdongnan basins， South China Sea［J］. AAPG Bulletin， 2009， 93（6）： 741-761.
25	HUANG Baojia， TIAN Hui， LI Xushen， et al. Geochemistry， origin and accumulation of natural gases in the deepwater area of the Qiongdongnan Basin， South China Sea［J］. Marine and Petroleum Geology， 2016， 72： 254-267.
26	HUANG Baojia， XIAO Xianming， LI Xuxuan. Geochemistry and origins of natural gases in the Yinggehai and Qiongdongnan basins， offshore South China Sea［J］. Organic Geochemistry， 2003， 34（7）： 1009-1025.
27	XIE Yuhong， WANG Zhenfeng， TONG Chuanxin. Petroleum geology of Yacheng 13-1， the largest gas field in China’s offshore region［J］. Marine and Petroleum Geology， 2008， 25（4/5）： 433-444.
28	傅恒，匡明志，何小胡，等. 琼东南盆地南部隆起带渐新统崖城组层序沉积模式［J］. 天然气工业， 2020， 40（12）： 18-28.
	FU Heng， KUANG Mingzhi， HE Xiaohu， et al. Sequence sedimentary models of Oligocene Yacheng Formation in the southern uplift belt of the Qiongdongnan Basin［J］. Natural Gas Industry， 2020， 40（12）： 18-28.
29	黄保家，李绪深，王振峰，等. 琼东南盆地深水区烃源岩地球化学特征与天然气潜力［J］. 中国海上油气， 2012， 24（4）： 1-7.
	HUANG Baojia， LI Xushen， WANG Zhenfeng， et al. Source rock geochemistry and gas potential in the deep water area， Qiongdongnan Basin［J］. China Offshore Oil and Gas， 2012， 24（4）： 1-7.
30	HAO Fang， LI Sitian， SUN Yongchuan， et al. Geology， compositional heterogeneities， and geochemical origin of the Yacheng gas field， Qiongdongnan Basin， South China Sea［J］. AAPG Bulletin， 1998， 82（7）： 1372-1384.
31	谢玉洪，童传新. 崖城13-1气田天然气富集条件及成藏模式［J］. 天然气工业， 2011， 31（8）： 1-5， 127.
	XIE Yuhong， TONG Chuanxin. Conditions and gas pooling modes of natural gas accumulation in the Yacheng-13-1 gas field［J］. Natural Gas Industry， 2011， 31（8）： 1-5， 127.
32	朱扬明，孙林婷，谢建明，等. 崖城地区渐新统不同沉积相带烃源岩生物标志物组合特征及其烃源意义［J］. 地质科学， 2016， 51（1）： 204-219.
	ZHU Yangming， SUN Linting， XIE Jianming， et al. Biomarker compositions and hydrocarbon source significances of different facies Oligocene source rocks in Yacheng region， Qiongdongnan Basin［J］. Chinese Journal of Geology， 2016， 51（1）： 204-219.
33	甘军，张迎朝，杨希冰，等. 琼东南盆地深水区源—储共控的天然气成藏模式［J］. 高校地质学报， 2022， 28（5）： 635-643.
	GAN Jun， ZHANG Yingzhao， YANG Xibing， et al. Natural gas accumulation model controlled jointly by source and reservoir in deep water area of Qiongdongnan Basin［J］. Geological Journal of China Universities， 2022， 28（5）： 635-643.
34	张功成，曾清波，苏龙，等. 琼东南盆地深水区陵水17-2大气田成藏机理［J］. 石油学报， 2016， 37（S1）： 34-46.
	ZHANG Gongcheng， ZENG Qingbo， SU Long， et al. Accumulation mechanism of LS 17-2 deep water giant gas field in Qiongdongnan Basin［J］. Acta Petrolei Sinica， 2016， 37（S1）： 34-46.
35	邓勇，裴健翔，胡林，等. 南海西部海域宝岛21-1气田的发现与成藏模式［J］. 中国海上油气， 2022， 34（5）： 13-22.
	DENG Yong， PEI Jianxiang， HU Lin， et al. Discovery and hydrocarbon accumulation models of Baodao 21-1 gas field in the western South China Sea［J］. China Offshore Oil and Gas， 2022， 34（5）： 13-22.

分类		源岩类型	源岩层位	天然气碳同位素值	干燥系数	成熟度及类型	主要气藏
A	A₁ 松东凹陷	海相陆源、湖相源岩	崖城组陵水组梅山组	δ¹³C₁：-51.0 ‰ ～ -45.0 ‰ δ¹³C₂：-31.0 ‰ ～ -29.0 ‰ δ¹³C₃：-31.0 ‰ ～ -28.0 ‰	0.88～0.92（均值0.90）	低熟-成熟油型气	BD13-1/3， ST34-3
A	A₂ 松南-宝岛	海相陆源源岩	陵水组三亚组	δ¹³C₁：-47.0 ‰ ～ -42.0 ‰ δ¹³C₂：-28.0 ‰ ～ -25.5 ‰ δ¹³C₃：-28.0 ‰ ～ -25.5 ‰	0.87～0.98（均值0.94）	低熟-成熟煤型气	ST36-1/2， LS18-2， YL8-1/3
B	B₁ 宝岛北坡	海相陆源源岩	崖城组陵水组三亚组	δ¹³C₁：-40.0 ‰ ～ -34.0 ‰ δ¹³C₂：-27.0 ‰ ～ -23.0 ‰ δ¹³C₃：-24.0 ‰ ～ -23.0 ‰		成熟煤型气	BD21-1， BD19-2， WN1-1
B	B₂ 中央峡谷	海相陆源源岩	崖城组陵水组	δ¹³C₁：-42.0 ‰ ～ -36.0 ‰ δ¹³C₂：-27.0 ‰ ～ -23.0 ‰ δ¹³C₃：-24.0 ‰ ～ -23.0 ‰	0.91～0.96（均值0.94）	成熟煤型气	LS17-2/18-1， LS22-1/25-1， YC24-1， LS13-2W
C		海-陆过渡相煤系	崖城组	δ¹³C₁：-40.0 ‰ ～ -35.0 ‰ δ¹³C₂：-28.0 ‰ ～ -24.0 ‰ δ¹³C₃：-28.0 ‰ ～ -22.0 ‰	0.91～0.98（均值0.95）	成熟-高熟煤型气	YC13-1， YC13-4/6， LS13-2N

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Deep architecture of hyperextended marginal basin and implications for hydrocarbon exploration：A case study of Qiongdongnan Basin

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