Abstract：Due to the unclear fault pattern and distribution rules，it is difficult to identify traps in the Trakes slope，Niger，and thus there is no breakthrough in oil and gas exploration.Therefore，based on 3D seismic data，this paper clarifies the distribution characteristics and formation mechanism of faults by fine characterization techniques for faults such as constructing guided filtering and eigenvalue coherence.Results show that two groups of NNW-SSE and NW-SE conjugate strike-slip faults are developed in the studies area，with floral or semi-floral characteristics in seismic profiles.The NW-SE strike-slip fault formed by the simultaneous shear rupture on the right side of R controls the tectonic pattern of the north-south zoning of this slope.The NNW-SSE strike-slip fault is an R′ left-lateral reverse shear fracture，which，in conjunction with the NW-SE fault，controls the trap distribution on the Trakes slope.Additionally，strike-slip faults are also an important channel for hydrocarbon migration from bottom to top，controlling hydrocarbon accumulation.
孙维昭, 王中凡, 贺金胜, 刘强. 尼日尔Trakes斜坡走滑断裂特征及其对油气藏的控制作用[J]. 石油地球物理勘探, 2023, 58(s1): 112-117.
SUN Weizhao, WANG Zhongfan, HE Jinshen, LIU Qiang. Characteristics of strike-slip fault and its control on oil and gas accumulation in the Trakes slope，Niger. Oil Geophysical Prospecting, 2023, 58(s1): 112-117.
刘邦,潘校华,万仑坤,等. 东尼日尔Termit盆地构造演化及古近系油气成藏主控因素[J].石油学报,2012,33(3):394-403. LIU Bang,PAN Jiaohua,WAN Lunkun,et al. Structural evolution and main controlling factors of the Paleogene hydrocarbon accumulation in Termit Basin,eastern Niger[J].Acta Petrolei Sinica,2012,33(3):394-403.
[2]
薛良清,万仑坤,毛凤军,等. 东尼日尔盆地Termit坳陷油气富集规律及Dibeilla-1井发现的意义[J].中国石油勘探,2012,17(4):53-59. XUE Liangqing,WAN Lunkun,MAO Fengjun,et al. Petroleum migration and accumulation in Termit depression of East Niger basin and implications for discovery of Well Dibeilla[J].China Petroleum Exploration,2012,17(4):53-59.
[3]
张庆莲,侯贵廷,潘校华,等. Termit盆地构造变形的力学机制[J].大地构造与成矿学,2013,37(3):377-383. ZHANG Qinglian,HOU Guiting,PAN Xiaohua,et al. Mechanics of termit basin in central Africa rift systems[J].Geotectonica et Metallogenia,2013,37(3):377-383.
[4]
汤戈,孙志华,苏俊青,等.西非Termit盆地白垩系层序地层与沉积体系研究[J].中国石油勘探,2015,20(4):81-88. TANG Ge,SUN Zhihua,SU Junqing,et al. Study of Cretaceous sequential stratigraphy and sedimentary system in Termit Basin of West Africa[J].China Petroleum Exploration,2015,20(4):81-88.
[5]
袁圣强,毛凤军,郑凤云,等. 尼日尔Termit盆地上白垩统成藏条件分析与勘探策略[J].地学前缘,2018,25(2):42-50. YUAN Shengqiang,MAO Fengjun,ZHENG Fengyun,et al. Analysis of hydrocarbon accumulation condition and exploration tactics of the Upper Cretaceous strata in the Termit Basin,Niger[J].Earth Science Frontiers,2018,25(2):42-50.
[6]
周立宏,汤戈,苏俊青,等. 西非Termit叠合裂谷盆地构造沉积演化及控藏机理[J].石油学报,2018,39(2):129-140. ZHOU Lihong,TANG Ge,SU Junqing,et al. Tectonic-sedimentary evolution and reservoir controlling mechanism of Termit superimposed rift basin in West Africa[J].Acta Petrolei Sinica,2018,39(2):129-140.
[7]
郑凤云,史卜庆,李早红,等. 尼日尔Termit盆地古近系构造样式及其对油气聚集的控制作用[J].地学前缘,2018,25(2):72-82. ZHENG Fengyun,SHI Buqing,LI Zaohong,et al. Paleogene structure styles and their controls on the hydrocarbon accumulation in the Termit Basin,Niger[J].Earth Science Frontiers,2018,25(2):72-82.
[8]
李明杰,胡少华,王庆果,等. 塔中地区走滑断裂体系的发现及其地质意义[J].石油地球物理勘探,2006,41(1):116-122. LI Mingjie,HU Shaohua,WANG Qingguo,et al. Discovery of strike slip fault system in Tazhong area and geologic meaning[J].Oil Geophysical Prospecting,2006,41(1):116-122.
[9]
马乃拜,金圣林,杨瑞召,等. 塔里木盆地顺北地区断溶体地震反射特征与识别[J].石油地球物理勘探,2019,54(2):398-403. MA Naibai,JIN Shenglin,YANG Ruizhao,et al. Seismic response characteristics and identification of fault-karst reservoir in Shunbei area,Tarim Basin[J].Oil Geophysical Prospecting,2019,54(2):398-403.
[10]
吴奎,何京,张中巧,等. 基于构造物理模拟实验的走滑量求取[J].石油地球物理勘探,2019,54(4):891-900. WU Kui,HE Jing,ZHANG Zhongqiao,et al. Strike-slip fault displacement calculation based on structure physical simulation[J].Oil Geophysical Prospecting,2019,54(4):891-900.
[11]
胡志伟,徐长贵,王德英,等. 渤海海域走滑断裂叠合特征与成因机制[J].石油勘探与开发,2019,46(2):254-267. HU Zhiwei,XU Changgui,WANG Deying,et al. Superimposed characteristics and genetic mechanism of strike-slip faults in the Bohai sea,China[J].Petroleum Exploration and Development,2019,46(2):254-267.
[12]
李相文,李景叶,刘永雷,等. 塔里木盆地超深层走滑断裂带的地震识别方法[J].石油地球物理勘探,2022,57(6):1418-1426. LI Xiangwen,LI Jingye,LIU Yonglei,et al. Seismic identification method of ultra-deep strike-slip fault zones in Tarim Basin[J].Oil Geophysical Prospecting,2022,57(6):1418-1426.
[13]
曾佐勋,樊光明. 构造地质学[M].第3版.北京:中国地质大学出版社,2008. ZENG Zuoxun,FAN Guangming. Structural Geology[M].3rd ed. China University of Geosciences Press,Beijing,2008.
