二连盆地赛汉塔拉凹陷构造特征分析
|
摘要
本文采用构造地质学的研究方法,通过选取多条地震剖面进行二维构造—地层解释和平衡恢复,揭示了赛汉塔拉凹陷的发育过程,了解了二连盆地的总体结构特征和形成机制,结果表明:赛汉塔拉凹陷表现为下部断陷、中部不均衡隆起和拗陷并存、上部超覆拗陷的基本特征;严格受正断层活动控制的沉降主要发生于阿尔善组和腾格尔组一段沉积时期,在腾格尔组二段沉积时期,盆地发生不均衡隆起和拗陷,部分地域的沉降仍受到断裂活动的控制;在赛汉塔拉沉积期主体表现为区域性拗陷沉降和超覆不整合发育,盆地接近消亡;全盆地大体可划分为三个亚构造层序或盆地相,即下部裂陷盆地相(阿尔善组和腾格尔组一段)、中部拆离盆地相(腾格尔组二段和赛汉塔拉组)和上部热衰减或构造反转盆地相,它们分别受控于不同的构造作用过程。研究结果对二连盆地西南部具有相同成因类型和构造样式的其他凹陷的油气勘探具有参考价值。
By integrating structural geology method with stratigraphy analysis,multiple 2D seismic sections are interpreted,the structure is restored and balanced,and the extensional magnitude and rates are calculated.The results reveal the development process of Saihantala sag,and help to understand the general internal architecture and forming mechanism of Erlian Basin.The study indicates that the development of Saihantala sag mainly consists of three stages,that is,early stage of faulting/rifting,middle unbalanced stage with depression and uplift co-existed and late stage of regional depression with overlapping deposits.The early faulting mainly happens when Aershan formation and Tenggeer formation subunit 1 are deposited;while Tenggeer formation subunit 2 is deposited,the basin is undergoing differential depression and uplifting,with local subsidence still controlled by faulting.With the deposition of Tenggeer formation,the basin is characterized by regional depression and development of unconformity due to overlapping,and the basin is close to die out.The whole basin can be divided into three sub tectono-sequences or basin facies that are controlled by different tectonics,e.g.the lower rifting basin(Aershan formation and Tenggeer formation subunit 1),middle detachment basin(Tenggeer formation subunit 2 and Saihantala formation),and upper basin dominated by thermal decay or tectonic inversion.The result of this study will be beneficial to the hydrocarbon exploration in other sags in Erlian Basin with similar genesis and structure styles.
By integrating structural geology method with stratigraphy analysis,multiple 2D seismic sections are interpreted,the structure is restored and balanced,and the extensional magnitude and rates are calculated.The results reveal the development process of Saihantala sag,and help to understand the general internal architecture and forming mechanism of Erlian Basin.The study indicates that the development of Saihantala sag mainly consists of three stages,that is,early stage of faulting/rifting,middle unbalanced stage with depression and uplift co-existed and late stage of regional depression with overlapping deposits.The early faulting mainly happens when Aershan formation and Tenggeer formation subunit 1 are deposited;while Tenggeer formation subunit 2 is deposited,the basin is undergoing differential depression and uplifting,with local subsidence still controlled by faulting.With the deposition of Tenggeer formation,the basin is characterized by regional depression and development of unconformity due to overlapping,and the basin is close to die out.The whole basin can be divided into three sub tectono-sequences or basin facies that are controlled by different tectonics,e.g.the lower rifting basin(Aershan formation and Tenggeer formation subunit 1),middle detachment basin(Tenggeer formation subunit 2 and Saihantala formation),and upper basin dominated by thermal decay or tectonic inversion.The result of this study will be beneficial to the hydrocarbon exploration in other sags in Erlian Basin with similar genesis and structure styles.
引文
[1]任纪舜,陈廷愚,牛宝贵.中国东部及邻区大陆岩石圈的构造演化及成矿.北京:科学出版社,1990
[2]叶得泉,钟筱春.中国北方含油气区白垩系.北京:石油工业出版社,1990
[3]Dou L R,Zhu Y H,Yang T et al.Origins of heavyoils in the Erlian Basin,NE China.Marine and Pe-troleum Geology,1998,15:769～781
[4]焦贵浩,王同和,郭绪杰等.二连裂谷构造演化与油气.北京:石油工业出版社,2003
[5]Dou L R.The lower cretaceous petroleum system inNE China.Journal of Petroleum Geology,1997,20(4):475～488
[6]Dou L R,Chang L.Fault linkage patterns and theircontrol on the formation of the petroleum systems ofthe Erlian Basin,Eastern China.Marine and Petro-leum Geology,2003,20(10):1213～1224
[7]赵澄林,祝玉衡,季汉成等.二连盆地储层沉积学.北京:石油工业出版社,1996
[8]祝玉衡,张文朝.二连盆地层序地层样式及油气意义.石油勘探与开发,1999,26(4):49～53Zhu Yu-heng,Zhang Wen-chao.Type of stratigraph-ic sequence in Erlian basin and its significance in oil/gas exploration.Petroleum Exploration and Devel-opment,1999,26(4):49～53
[9]祝玉衡,张文朝.二连盆地下白垩统沉积相及含油性.北京:科学出版社,2000
[10]宋建国,窦立荣.中国东部中新生代含油气盆地构造与油气系统.北京:石油工业出版社,1997
[11]闫文华,张万福,张立新等.二连盆地赛汉塔拉凹陷地质综合评价及目标优选.石油地球物理勘探,2008,43(增刊1):139～145Yan Wen-hua,Zhang Wan-fu,Zhang Li-xin et al.Integrative geologic evaluation and objective optimiza-tion of Saihantala sag,Erlian basin.OGP,2008,43(Sup 1):139～145
[12]尹志军,田世清,杨志彬等.内蒙二连盆地赛汉塔拉凹陷下白垩统层序地层及有利成藏条件.古地理学报,2009,11(3):330～337Yin Zhi-jun,Tian Shi-qing,Yang Zhi-bin et al.Se-quence stratigraphy and beneficial hydrocarbon accu-mulation conditions of the Lower Cretaceous inSaihantala Sag,Erlian Basin,Inner Mongolia.Jour-nal of Palaeogeography,2009,11(3):330～337
[13]张尚锋.内蒙二连盆地赛汉塔拉凹陷构造特征及含油气远景.西南石油学院学报,1998,20(2):35～38Zhang Shang-feng.Structural characteristics and pro-spectiveness of oil and gas in Saihantala Sag,ErlianBasin,Inner Mongolia.Journal of Southwest Petro-leum Institute,1998,20(2):35～38
[14]欧阳文生,窦立荣,王奇.裂谷盆地断层连锁对沉积及油气分布的控制──以二连盆地赛汉塔拉凹陷为例.石油勘探与开发,2003,30(5):10～13Ouyang Wen-sheng,Dou Li-rong,Wang qi.Sedi-mentaton response in rift basin to tectonics and itscontrol to hydrocarbon distribution-an example ofSaihantala sag in Erlian basin.Petroleum Explora-tion and Development,2003,30(5):10～13
[15]林畅松,李思田,任建业.断陷湖盆层序地层研究和计算机模拟──以二连盆地乌里雅斯太断陷为例.地学前缘,1995,2(3～4):124～132Lin Chang-song,Li Si-tian,Ren Jian-ye.Sequencearchitecture and depositional systems of Erlian lacus-trine fault basins,North China.Earth Science Fron-tiers,1995,2(3～4):124～132
[16]毕素萍,张庆龙,王良书等.松辽盆地宾县凹陷平衡剖面恢复及构造演化分析.石油实验地质,2008,30(2):203～206Bi Su-ping,Zhang Qing-long,Wang Liang-shu et al.Balanced cross-section restoration and tectonic evolu-tion analysis in the Binxin sag,the Songliao basin.Petroleum Geology&Experiment,2008,30(2):203～206
[17]单伟,刘少峰,吴键.松辽盆地南缘长岭凹陷断陷层的构造特征与应变模式.地质通报,2009,28(4):431～438Shan Wei,Liu Shao-feng,Wu Jian.Tectonic featureand strain pattern of Changling sag on the southernedge of Songliao basin,China.Geological Bulletinof China,2009,28(4):431～438
[18]程三友.中国东北地区区域构造特征与中、新生代盆地演化[博士学位论文].北京:中国地质大学,2006
[19]赵志刚,李亮,李书民等.二连盆地赛汉塔拉凹陷构造样式及凹陷成因类型研究.大庆石油地质与开发,2005,24(6):11～13Zhao Zhi-gang,Li Lang,Li Shu-min et al.Structurestyle of Saihantala sag in Erlian basin and its genesistype.Petroleum Geology&Oil field Developmentin Daqing,2005,24(6):11～13
[20]Meng Q R,Hu J M,Jin J Q et al.Tectonics of thelate Mesozoic wide extensional basin system in theChina-Mongolia border region.Basin Research,2003,15:397～415
[2]叶得泉,钟筱春.中国北方含油气区白垩系.北京:石油工业出版社,1990
[3]Dou L R,Zhu Y H,Yang T et al.Origins of heavyoils in the Erlian Basin,NE China.Marine and Pe-troleum Geology,1998,15:769～781
[4]焦贵浩,王同和,郭绪杰等.二连裂谷构造演化与油气.北京:石油工业出版社,2003
[5]Dou L R.The lower cretaceous petroleum system inNE China.Journal of Petroleum Geology,1997,20(4):475～488
[6]Dou L R,Chang L.Fault linkage patterns and theircontrol on the formation of the petroleum systems ofthe Erlian Basin,Eastern China.Marine and Petro-leum Geology,2003,20(10):1213～1224
[7]赵澄林,祝玉衡,季汉成等.二连盆地储层沉积学.北京:石油工业出版社,1996
[8]祝玉衡,张文朝.二连盆地层序地层样式及油气意义.石油勘探与开发,1999,26(4):49～53Zhu Yu-heng,Zhang Wen-chao.Type of stratigraph-ic sequence in Erlian basin and its significance in oil/gas exploration.Petroleum Exploration and Devel-opment,1999,26(4):49～53
[9]祝玉衡,张文朝.二连盆地下白垩统沉积相及含油性.北京:科学出版社,2000
[10]宋建国,窦立荣.中国东部中新生代含油气盆地构造与油气系统.北京:石油工业出版社,1997
[11]闫文华,张万福,张立新等.二连盆地赛汉塔拉凹陷地质综合评价及目标优选.石油地球物理勘探,2008,43(增刊1):139～145Yan Wen-hua,Zhang Wan-fu,Zhang Li-xin et al.Integrative geologic evaluation and objective optimiza-tion of Saihantala sag,Erlian basin.OGP,2008,43(Sup 1):139～145
[12]尹志军,田世清,杨志彬等.内蒙二连盆地赛汉塔拉凹陷下白垩统层序地层及有利成藏条件.古地理学报,2009,11(3):330～337Yin Zhi-jun,Tian Shi-qing,Yang Zhi-bin et al.Se-quence stratigraphy and beneficial hydrocarbon accu-mulation conditions of the Lower Cretaceous inSaihantala Sag,Erlian Basin,Inner Mongolia.Jour-nal of Palaeogeography,2009,11(3):330～337
[13]张尚锋.内蒙二连盆地赛汉塔拉凹陷构造特征及含油气远景.西南石油学院学报,1998,20(2):35～38Zhang Shang-feng.Structural characteristics and pro-spectiveness of oil and gas in Saihantala Sag,ErlianBasin,Inner Mongolia.Journal of Southwest Petro-leum Institute,1998,20(2):35～38
[14]欧阳文生,窦立荣,王奇.裂谷盆地断层连锁对沉积及油气分布的控制──以二连盆地赛汉塔拉凹陷为例.石油勘探与开发,2003,30(5):10～13Ouyang Wen-sheng,Dou Li-rong,Wang qi.Sedi-mentaton response in rift basin to tectonics and itscontrol to hydrocarbon distribution-an example ofSaihantala sag in Erlian basin.Petroleum Explora-tion and Development,2003,30(5):10～13
[15]林畅松,李思田,任建业.断陷湖盆层序地层研究和计算机模拟──以二连盆地乌里雅斯太断陷为例.地学前缘,1995,2(3～4):124～132Lin Chang-song,Li Si-tian,Ren Jian-ye.Sequencearchitecture and depositional systems of Erlian lacus-trine fault basins,North China.Earth Science Fron-tiers,1995,2(3～4):124～132
[16]毕素萍,张庆龙,王良书等.松辽盆地宾县凹陷平衡剖面恢复及构造演化分析.石油实验地质,2008,30(2):203～206Bi Su-ping,Zhang Qing-long,Wang Liang-shu et al.Balanced cross-section restoration and tectonic evolu-tion analysis in the Binxin sag,the Songliao basin.Petroleum Geology&Experiment,2008,30(2):203～206
[17]单伟,刘少峰,吴键.松辽盆地南缘长岭凹陷断陷层的构造特征与应变模式.地质通报,2009,28(4):431～438Shan Wei,Liu Shao-feng,Wu Jian.Tectonic featureand strain pattern of Changling sag on the southernedge of Songliao basin,China.Geological Bulletinof China,2009,28(4):431～438
[18]程三友.中国东北地区区域构造特征与中、新生代盆地演化[博士学位论文].北京:中国地质大学,2006
[19]赵志刚,李亮,李书民等.二连盆地赛汉塔拉凹陷构造样式及凹陷成因类型研究.大庆石油地质与开发,2005,24(6):11～13Zhao Zhi-gang,Li Lang,Li Shu-min et al.Structurestyle of Saihantala sag in Erlian basin and its genesistype.Petroleum Geology&Oil field Developmentin Daqing,2005,24(6):11～13
[20]Meng Q R,Hu J M,Jin J Q et al.Tectonics of thelate Mesozoic wide extensional basin system in theChina-Mongolia border region.Basin Research,2003,15:397～415
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心