渤海海域北部JX1-1反转构造与油气成藏关系
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摘要
以高分辨率三维地震资料为基础,结合相干技术等先进地震资料处理和解释技术,对研究区反转构造变形特征进行了探讨和研究,并分析了反转带与油气聚集的关系。JX1-1地区断裂发育,主要为NE走向,平面上呈雁列式排列。在古近系沙河街组沉积末期,JX1-1地区在郯庐断裂走滑应力作用下发生了反转,形成了良好的背斜构造背景,在古近系东营组沉积时期,持续隆升,到了古近纪末期和新近纪初期,基本定型。JX1-1反转带的发育对油气聚集成藏的影响主要表现为:有利于构造圈闭的形成;对沉积体系的展布形成了一定的影响;形成的断裂有助于油气的运移;对储层的物性起到积极的改善作用;反转强度过大对新近系浅层油气聚集不利;渤海海域郯庐断裂带过渡、拐弯部位的反转构造带古近系是有利的油气勘探目标区带。
Based on the high-resolution 3-D seismic profiles and combined with coherent technology and other advanced seismic data processing as well its interpretation techniques,we discussed and studied the deformation characteristics of the inversion in the JX1-1 area,and analyzed the relationship between JX1-1 inversion tectonics and hydrocarbon accumulation in Liaodongwan offshore of Bohai Bay basin.There are numerous faults of varying scales in JX1-1 area,and the NE-trending faults are predominant.Too large inversion is not favorable for the shallow hydrocarbon accumulation in Neogene.The Tan-Lu fault's transition and turning parts of the Paleogene inversion tectonics zone are the favorable objectives for oil and gas exploration in the offshore Bohai Bay basin.JX1-1 region in the Tan-Lu strike-slip fault stresses under the effect of reversal,during the late sedimentary periods of the Paleogene Shahejie Formation,forming a good anticline structure.In the Paleogene Dongying Formation deposition period,it continued to uplift,until the late Paleogene and early Neogene inversion structures have been formed.The JX1-1 inversion tectonics had also significant influences on the formation of the structural traps,spatial distribution of sedimentary systems and hydrocarbon migration,as well as improvement on reservoir properties.
Based on the high-resolution 3-D seismic profiles and combined with coherent technology and other advanced seismic data processing as well its interpretation techniques,we discussed and studied the deformation characteristics of the inversion in the JX1-1 area,and analyzed the relationship between JX1-1 inversion tectonics and hydrocarbon accumulation in Liaodongwan offshore of Bohai Bay basin.There are numerous faults of varying scales in JX1-1 area,and the NE-trending faults are predominant.Too large inversion is not favorable for the shallow hydrocarbon accumulation in Neogene.The Tan-Lu fault's transition and turning parts of the Paleogene inversion tectonics zone are the favorable objectives for oil and gas exploration in the offshore Bohai Bay basin.JX1-1 region in the Tan-Lu strike-slip fault stresses under the effect of reversal,during the late sedimentary periods of the Paleogene Shahejie Formation,forming a good anticline structure.In the Paleogene Dongying Formation deposition period,it continued to uplift,until the late Paleogene and early Neogene inversion structures have been formed.The JX1-1 inversion tectonics had also significant influences on the formation of the structural traps,spatial distribution of sedimentary systems and hydrocarbon migration,as well as improvement on reservoir properties.
引文
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[20]Deng Jinghui,Zhou Xinhuai,Wei Gang,et al.Strike-slip faul-ting activities in the Tanlu fault zone and their relationshipwith hydrocarbon accumulation:An example from Jinxian are-a[J].Oil&Gas Geology,2008,29(1):102-106.[邓津辉,周心怀,魏刚,等.郯庐走滑断裂带活动特征与油气成藏的关系——以金县地区为例[J].石油与天然气地质,2008,29(1):102-106.]
[21]Cai Xiyuan,Wang Tonghe.China Oil and Gas District Inver-sion Structures[M].Beijing:Petroleum Industry Press,2001:66-67.[蔡希源,王同和.中国油气区反转构造[M].北京:石油工业出版社,2001:66-67.]
[22]Li Xiaobin,Tao Mingxin,Wang Zuodong et al.Research ad-vance of inversion tectonics in oil&gas-bearing basins,northwest China[J].Natural Gas Geoscience,2007,18(5):678-683.[李晓斌,陶明信,王作栋,等.我国西北地区含油气盆地构造反转研究进展[J].天然气地球科学,2007,18(5):678-683.]
[2]Stille H.Grundfragen Dervergleichenden Tektonik[M].Ber-lin:Borntraeger,1924.
[3]Glennie K W,Boegner P L E.Sole pit inversion tectonics[M]∥Petroleum Geology of the Continental Shelf of North-WestEurope.London:Institute of Petroleum,1981:110-120.
[4]中村光一.反転テクトニクス(inversion tectonics)とその地質構造表現[J].構造地質,1992,38:3-45プージ.
[5]Shankar Mitra,Quazi T Islam.Experimental(clay)models ofinversion structures[J].Tectonophysics,1994,230(3):211-222.
[6]Harding T P.Seismic characteristics and identification of negativeflower structures,positive flower structures,and positive structur-al inversion[J].AAPG Bulletin,1985,69:582-600.
[7]Buqing Wang,Hanlin Chen,Shufeng Yang,et al.Geometryand kinematics of late Cretaceous inversion structures in theJiuquan basin,western China[J].Cretaceous Research,2003,26(2):319-327.
[8]Laurent Louis,Philippe Robion,Christian David.A single methodfor the inversion of anisotropic data sets with application tostructural studies[J].Journal of Structural Geology,2004,26(11):2065-2072.
[9]Urs Helg,Martin Burkhard,Severine Caritg,et al.Folding andinversion tectonics in the Anti-Atlas of Morocco[J].Tecton-ics,2004,23:1-17.
[10]Williams G D,Powell C M,Cooper M A.Geometry and kine-matics of inversion tectonics[M]//Cooper M A,Williams GD,Eds.Inversion Tectonics.London:Geological SocietySpe-cial Publication,1989.
[11]Cook D G,MacLean B C.Mid-continent tectonic inversion,northwest Territories,Canada[J].Journal of Structural Geol-ogy,1996,18:791-802.
[12]Tavarnelli E.Normal faults in thrust sheets:Pre-orogenic ex-tension,post-orogenic extension,or both[J].Journal of Struc-tural Geology,1999,21:1011-1018.
[13]Yang Fengli,Wang Minxue,Zhuang Jianjian,et al.Kinemat-ical processes of inversion structure and its contribution tohydrocarbon accumulation in Xihu depression of East ChinaSea basin[J].Acta Petrolei Sinica,2010,31(4):596-601.[杨风丽,王敏雪,庄建建,等.西湖凹陷反转构造定量运动学过程及对油气的控制作用[J].石油学报,2010,31(4):596-601.]
[14]Zhang Gongcheng,Xu Hong,Liu Hefu,et al.Inversion struc-tures fault-bend folds fault-propagation folds oil and gas fieldsSongliao basin[J].Acta Petrolei Sinica,1996,17(2):9-13.[张功成,徐宏,刘和甫,等.松辽盆地反转构造与油气田分布[J].石油学报,1996,17(2):9-13.]
[15]Guo Weixing,Qi Jiafu,Li Minggang,et al.Inversion structureof Kelasu structure zone in Kuqa depression and its formationmechanism[J].Acta Petrolei Sinica,2010,31(3):379-385.[郭卫星,漆家福,李明刚,等.库车坳陷克拉苏构造带的反转构造及其形成机制[J].石油学报,2010,31(3):379-385.]
[16]Zhu Xiaoming,Dong Yanlei,Yang Junsheng,et al.Distribu-tion of the Paleogene sequence stratigraphic framework anddepositional systems in Liaodong bay area[J].Science in Chi-na:Series D,2008,38(supplement):1-10.[朱筱敏,董艳蕾,杨俊生,等.辽东湾地区古近系层序地层格架与沉积体系分布[J]中国科学:D辑,2008,38(增刊):1-10.]
[17]Gong Zaisheng,Cai Dongsheng,Zhang Gongcheng.Domina-ting action of Tan-lu fault on hydrocarbon accumulation ineastern Bohai Sea area[J].Acta Petrolei Sinica,2007,28(4):1-10.[龚再升,蔡东升,张功成.郯庐断裂对渤海海域东部油气成藏的控制作用[J].石油学报,2007,28(4):1-10.]
[18]Mitra S.Geometry and kinematic evolution of inversion struc-tures[J].AAPG Blletion,1993,77(7):1159-1191.
[19]Tim R Charlton.The petroleum potential of inversion anti-clines in the Banda Arc[J].AAPG Bulletin,2004,88(5):565-585.
[20]Deng Jinghui,Zhou Xinhuai,Wei Gang,et al.Strike-slip faul-ting activities in the Tanlu fault zone and their relationshipwith hydrocarbon accumulation:An example from Jinxian are-a[J].Oil&Gas Geology,2008,29(1):102-106.[邓津辉,周心怀,魏刚,等.郯庐走滑断裂带活动特征与油气成藏的关系——以金县地区为例[J].石油与天然气地质,2008,29(1):102-106.]
[21]Cai Xiyuan,Wang Tonghe.China Oil and Gas District Inver-sion Structures[M].Beijing:Petroleum Industry Press,2001:66-67.[蔡希源,王同和.中国油气区反转构造[M].北京:石油工业出版社,2001:66-67.]
[22]Li Xiaobin,Tao Mingxin,Wang Zuodong et al.Research ad-vance of inversion tectonics in oil&gas-bearing basins,northwest China[J].Natural Gas Geoscience,2007,18(5):678-683.[李晓斌,陶明信,王作栋,等.我国西北地区含油气盆地构造反转研究进展[J].天然气地球科学,2007,18(5):678-683.]
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