南苏门答腊盆地Jabung区块新生代沉积演化特征
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摘要
从测井与地震资料入手,结合区域地质背景与层序地层格架特征,采用层序地层学的理论和方法,确定南苏门答腊盆地北部Jabung区块新生代陆相沉积、海陆过渡沉积和海相沉积三大沉积体系均有发育,识别出冲积扇、河流、湖泊、三角洲、浅海陆棚五大沉积相类型。纵向上,根据海平面变化,可分为始新世中期到渐新世早期盆地局部海侵阶段、中新世早期到末期盆地全范围海侵阶段和上新世早期至今盆地全范围海退阶段三个沉积演化阶段。
This paper mainly focuses on the well log and seismic data combining with the area geological setting and sequence stratigraphy characteristics,and makes full use of the theory of sequence stratigraphy.Based on the integrated analysis of sedimentary characters,it can be found that terrestrial deposit,transitional deposit and marine deposit are all developed,and alluvial fan system,fluvial system,delta system and shallow carbonatite system are identified in the Jabung Block of the north of South Sumatra Basin in Cenozoic era.It can be vertically divided into three depositional evolution episodes considering eustatic sea level changes,that is,transgression in the local basin from the mid Eocene to the early Oligocene,transgression in the whole basin from the early to the late Miocene and regression in the whole basin from the early Pliocene to the present day.
This paper mainly focuses on the well log and seismic data combining with the area geological setting and sequence stratigraphy characteristics,and makes full use of the theory of sequence stratigraphy.Based on the integrated analysis of sedimentary characters,it can be found that terrestrial deposit,transitional deposit and marine deposit are all developed,and alluvial fan system,fluvial system,delta system and shallow carbonatite system are identified in the Jabung Block of the north of South Sumatra Basin in Cenozoic era.It can be vertically divided into three depositional evolution episodes considering eustatic sea level changes,that is,transgression in the local basin from the mid Eocene to the early Oligocene,transgression in the whole basin from the early to the late Miocene and regression in the whole basin from the early Pliocene to the present day.
引文
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[8]邓宏文,王红亮,等.层序地层地层基准面的识别、对比技术及应用[J].石油与天然气地质,1996,17(3):177~183.
[9]王居峰,邓宏文,蔡希源.准噶尔盆地中部侏罗系层序地层格架[J].石油勘探与开发,2005,32(1):23~26.
[2]侯国伟,于兴河,客伟利.番禺低隆起东区中新世早-中期沉积演化特征[J].石油天然气学报,2005,27(1):26~28.
[3]Suseno P H,Zakaria,Mujahidin Nizar,et al.Contribution of Lahat Formation ashydrocarbon source rock in south Palembangarea,South Sumatra,Indonesia[C].IPA92-13.03,1992:325~337.
[4]何仁斌,朱伟林,李丽霞.渤中坳陷沉积演化和上第三系储盖纵组合分析[J].石油学报,2001,22(2):38~43.
[5]徐振中,陈世悦,王永诗等.济阳坳陷侏罗纪面面岩相右地理演化特征[J].中国石油大学学报,2007,31(3):1~6.
[6]鲍才旺.珠江口陆架区埋藏古河道与古三角洲[J].海洋地质与第四纪地质,1995,15(2):25~361.
[7]吴智平,李伟,任拥军等..济阳坳陷中生代盆地演化及其与新生代盆地叠合关系探讨[J].地质学报,2003,77(2):280~286.
[8]邓宏文,王红亮,等.层序地层地层基准面的识别、对比技术及应用[J].石油与天然气地质,1996,17(3):177~183.
[9]王居峰,邓宏文,蔡希源.准噶尔盆地中部侏罗系层序地层格架[J].石油勘探与开发,2005,32(1):23~26.
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