Development and evolution of the Structure JX1-1 in Liaodong Bay Depression and its significance in petroleum exploration
Teng Changyu1, Hao Fang1,2, Zou Huayao2, Xu Changgui3
1. Key Laboratory of Tectonics and Petroleum Resources, Ministry of Education, China University of Geosciences (Wuhan), Wuhan, Hubei 430074, China;
2. State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum (Beijing), Beijing 102249, China;
3. Tianjin Branch, CNOOC Limited, Tianjin 300452, China
Abstract:The Structure JX1-1 developed on the west branch of Tan-Lu fault belt in Liaodong Bay Depression. It has a complex structural pattern and evolution history,which is very important for petroleum accumulation. In this paper 3D seismic data is used to characterize its pattern and fault distribution characteristics,to discuss its tectonic evolution,and to reveal its significance in petroleum exploration. The study indicates that the Structure JX1-1 developed only in the sedimentary cover and did not extend downward into the basement. The characteristics of the Structure JX1-1 are very similar to those of a symmetrically releasing bend strike-slip duplex structure,but some obvious differences also exist between them. The development of the Structure JX1-1 began with the formation of some en-echelon-arranged fractures T,a few right-stepping fractures P,and the fractures Y to the north and south ends. During the strike-slip deformation,two tips of each fracture propagate laterally,and the central fractures T links with its nearby fractures P to define a releasing bend. Then,the fractures T on the opposite sides of the bend sequentially link with fractures P or propagate laterally toward the earlier-developed faults to produce a serious of horses that are arranged in a piggy-back fashion,forming the present structural pattern. A large oil field formation of the Structure JX1-1 is not only related to sufficient petroleum source supply,but also associated with the transformation from strike-slip displacement to vertical displacement. As a result,effective fault traps developed,which provided favorable space for petroleum accumulation.
滕长宇, 郝芳, 邹华耀, 徐长贵. 辽东湾坳陷JX1-1构造发育演化及油气勘探意义[J]. 石油地球物理勘探, 2017, 52(3): 599-611.
Teng Changyu, Hao Fang, Zou Huayao, Xu Changgui. Development and evolution of the Structure JX1-1 in Liaodong Bay Depression and its significance in petroleum exploration. OGP, 2017, 52(3): 599-611.
Hsiao L,Graham S A,Tilander N. Seismic reflection imaging of a major strike-slip fault zone in a rift system:Paleogene structure and evolution of the Tan-Lu fault system,Liaodong Bay,Bohai,offshore China. AAPG Bulletin,2004,88(1):71-97.
Cao Zhongxiang,Ren Fenglou,Song Guoqi et al. Formation and segmentation of the East Rise,Liaodong Bay Depression controlled by the Yingkou-Weifang fault zone:Evidence from physical modeling and structural geometry. Chinese Journal of Geology,2008,43(2):238-250.
Deng Jinhui,Zhou Xinhuai,Wei Gang et al. Strike-slip faulting activities in the Tanlu fault zone and their relationship with hydrocarbon accumulation-an example from Jinxian area. Oil & Gas Geology,2008,29(1):102-106.
Peng Jingsong,Xu Changgui,Wu Kui et al. Formation of Liaodong uplift and collapse of the ancient Liaozhong sag in Tan-Lu fault zone. Acta Petrolei Sinica,2015,36(3):274-285.
[5]
Teng C Y,Hao F,Zou H Y et al. Tan-Lu fault system and its significance in oil accumulation in the central Liaodong Bay subbasin,Bohai Bay Basin,China. AAPG Bulletin,2016,100(2):289-314.
[6]
朱伟林,米立军,龚再升. 渤海海域油气成藏与勘探. 北京:科学出版社,2009.
Zhu Weilin,Mi Lijun,Gong Zaisheng. Petroleum accumulation and exploration in the Bohai Bay.Science Press,Beijing,2009.
Zhang You,Yang Bo,Huang Xiaobo et al. Tectonic characteristics and accumulation study in oil and gas reservoirs in steep slope belt-with LD6 structure in Bohai oil field as an example. Offshore Oil,2014,34(3):22-26.
[8]
朱伟林,葛建党. 渤海海域天然气勘探前景分析. 石油学报,2001,22(2):8-13.
Zhu Weilin,Ge Jiandang. Gas exploration potential in offshore Bohai Bay Basin. Acta Petrolei Sinica,2001,22(2):8-13.
[9]
Ye H,Shedlock K M,Hellinger S J et al. The North China Basin:An example of a Cenozoic rifted intraplate basin. Tectonics,1985,4(2):153-169.
Li Sanzhong,Suo Yanhui,Dai Liming et al. Development of the Bohai Bay Basin and destruction of the North China Craton. Earth Science Frontiers,2010,17(4):64-89.
Qi Jiafu. Two tectonic systems in the Cenozoic Bohai Bay basin and their genetic interpretation. Geology in China,2004,31(1):15-22.
[12]
Hao F,Zhou X H,Zhu Y M et al. Lacustrine source rock deposition in response to co-evolution of environments and organisms controlled by tectonic subsi-dence and climate,Bohai Bay Basin,China. Organic Geochemistry,2011,42(4):323-339.
[13]
Xu S,Hao F,Xu C G et al. Tracing migration pathways by integrated geological,geophysical,and geochemical data:A case study from the JX1-1 oil field,Bohai Bay Basin,China. AAPG Bulletin,2014,98(10):2109-2129.
[14]
Yang Y,Xu T. Hydrocarbon habitat of the offshore Bohai Basin,China. Marine and Petroleum Geology,2004,21(6):691-708.
[15]
Gong Z S,Zhu W L,Chen P P. Revitalization of a mature oil-bearing basin by a paradigm shift in the exploration concept. A case history of Bohai Bay,Offshore China. Marine and Petroleum Geology,2010,27(5):1011-1027.
Deng Yunhua. Practical effect of the "transfer station" model for oil-gas migration in rift basin:A case study on the Tertiary in the Bohai oil province. Acta Petrolei Sinica,2012,33(1):18-24.
[17]
Molnar P,Tapponnier P. Relation of the tectonics of eastern China to the India-Eurasia collision:Application of slip-line field theory to large-scale continental tectonics. Geology,1977,5(4):212-216.
Li Wenyong,Zhou Jianxin,Xiong Shengqing et al. Tectonic geometry of Tan-lu Faults in the Bohai Sea and its adjacent areas viewed from airborne gravity. Acta Geoscientica Sinica,2010,31(4):549-556.
Zhu Guang,Wang Daoxuan,Liu Guosheng et al. Evolution of the Tan-Lu fault zone and its responses to plate movements in West Pacific Basin. Chinese Journal of Geology,2004,39(1):36-49.
[20]
Mercier J L,Vergely P,Zhang Y Q et al. Structural records of the Late Cretaceous-Cenozoic extension in Eastern China and the kinematics of the Southern Tan-Lu and Qinling Fault Zone (Anhui and Shaanxi provinces,PR China). Tectonophysics,2013,582:50-75.
Qi Jiafu,Zhou Xinhuai,Deng Rongjing et al. Structural characteristics of the Tan-Lu fault zone in Cenozoic basins offshore the Bohai Sea. Science in China Series D:Earth Sciences,2008,51(SⅡ):20-31.
Hou Guiting,Qian Xianglin,Cai Dongsheng. The tectonic evolution of Bohai Basin in Mesozoic and Cenozoic time. Acta Scientiarum Naturalium Universitatis Pekinensis,2001,37(6):845-851.
Gong Zaisheng. Neotectonics and petroleum accumulation in offshore Chinese basins. Earth Science-Journal of China University of Geosciences,2004,29(5):513-517.
[26]
Huang L,Liu C Y,Wang Y B et al.Neogene-Quaternary postrift tectonic reactivation of the Bohai Bay Basin,eastern China. AAPG Bulletin,2014,98(7):1377-1400.
Li Xishuang,Zhao Yuexia,Liu Baohua et al. Structural deformation and fault activity of the Tan-Lu Fault zone in the Bohai Sea since the late Pleistocene. Chinese Science Bulletin,2010,55(18):1908-1916.
[28]
Woodcock N H,Rickards B.Transpressive duplex and flower structure:Dent Fault System,NW England. Journal of Structural Geology,2003,25(12):1981-1992.
[29]
Waldron J W F. Extensional fault arrays in strike-slip and transtension. Journal of Structural Geology,2005,27(1):23-34.
Tang Liangjie,Chen Xuyun,Zhou Xinhuai et al. Structural analysis of Tan-Lu fault zone in the Bohai Sea. Journal of Southwest Petroleum University (Science & Technology Edition),2011,33(1):170-176.
[31]
Kim Y,Peacock D C P,Sanderson D J. Fault damage zones. Journal of Structural Geology,2004,26(3):503-517.
[32]
Woodcock N H,Fischer M.Strike-slip duplexes.Journal of Structural Geology,1986,8(7):725-735.
[33]
Wilcox R E,Harding T P,Seely D R. Basic wrench tectonics. AAPG Bulletin,1973,57(1):74-96.
Zou Huayao,Zhou Xinhuai,Bao Xiaohuan et al. Controlling factors and models for hydrocarbon enrichment/depletion in Paleogene and Neogene,Bohai sea. Acta Petrolei Sinica,2010,31(6):885-893.
Teng Changyu,Zou Huayao,Hao Fang et al. Preservation condition and occurrence of the gas pools in the Bohai Bay area.Natural Gas Geoscience,2015,26(1):71-80.
[36]
Jensen E,Cembrano J,Faulkner D et al. Development of a self-similar strike-slip duplex system in the Atacama Fault system,Chile. Journal of Structural Geo-logy,2011,33(11):1611-1626.
[37]
Abd El-Wahed M A,Kamh S Z. Pan-African dextral transpressive duplex and flower structure in the Central Eastern Desert of Egypt. Gondwana Research,2010,18(2-3):315-336.
[38]
Laney S E,Gates A E. Three-dimensional shuffling of horses in a strike-slip duplex:an example from the Lambertville sill,New Jersey. Tectonophysics,1996,258(1-4):53-70.
Liu Hailing. On an extension-contraction-type dextral strike-slip duplex system in western Nansha Waters,South China Sea and its dynamic process. Marine Geology & Quaternary Geology,1999,19(3):11-18.
Xiao Ancheng,Li Jingyi,Zhang Chunsheng. Structure and kinematic genesis of the Selibuya strike-slip duplex in the Tarim basin. Journal of Jianghan Petroleum Institute,1998,20(2):9-15.
[41]
Cunningham W D,Mann P. Tectonics of strike-slip restraining and releasing bends. Geological Society,London,Special Publication,2007,290(1):1-12.
[42]
Mitra S,Paul D. Structural geometry and evolution of releasing and restraining bends Insights from laser-scanned experimental models. AAPG Bulletin,2011,95(7):1147-1180.
Chen Shuping,Lv Dingyou,Wang Yingbin et al. Neogene-Quaternary strike-slip movement in Bohai Basin and its significance in petroleum exploration. Acta Petrolei Sinica,2010,31(6):894-899.
[44]
Nixon C W,Sanderson D J,Dee S J et al. Fault interactions and reactivation within a normal-fault network at Milne Point,Alaska. AAPG Bulletin,2014,98(10):2081-2107.
[45]
Peacock D C P. Propagation,interaction and linkage in normal fault systems. Earth-Science Reviews,2002,58(1-2):121-142.