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柴东地区欧南凹陷上石炭统地震相及沉积展布特征

陈程 王利 赵为永 唐建超 魏小洁 方欣欣 张浩

陈程,王利,赵为永,等,2024. 柴东地区欧南凹陷上石炭统地震相及沉积展布特征[J]. 地质力学学报,30(3):408−418 doi: 10.12090/j.issn.1006-6616.2023077
引用本文: 陈程,王利,赵为永,等,2024. 柴东地区欧南凹陷上石炭统地震相及沉积展布特征[J]. 地质力学学报,30(3):408−418 doi: 10.12090/j.issn.1006-6616.2023077
CHEN C,WANG L,ZHAO W Y,et al.,2024. Seismic facies and sedimentary distribution characteristics of the Upper Carboniferous in the Ounan Depression, eastern Qaidam Basin[J]. Journal of Geomechanics,30(3):408−418 doi: 10.12090/j.issn.1006-6616.2023077
Citation: CHEN C,WANG L,ZHAO W Y,et al.,2024. Seismic facies and sedimentary distribution characteristics of the Upper Carboniferous in the Ounan Depression, eastern Qaidam Basin[J]. Journal of Geomechanics,30(3):408−418 doi: 10.12090/j.issn.1006-6616.2023077

柴东地区欧南凹陷上石炭统地震相及沉积展布特征

doi: 10.12090/j.issn.1006-6616.2023077
基金项目: 国家自然科学基金青年基金项目(42102201);中国地质调查局地质调查项目(DD20230297,DD20230260)
详细信息
    作者简介:

    陈程(1985—),女,在读博士,高级工程师,构造地质学专业,主要从事油气地震资料解释和油气地质综合研究。Email:272289121@qq.com

    通讯作者:

    王利(1984—),男,博士,高级工程师,矿产普查与勘探专业。Email:125763821@qq.com

  • 中图分类号: P618.13

Seismic facies and sedimentary distribution characteristics of the Upper Carboniferous in the Ounan Depression, eastern Qaidam Basin

Funds: This research is financially supported by Youth Fund of the National Natural Science Foundation of China (Grant No.42102201) and the Geological Survey Project of the China Geological Survey (Grants No. DD20230297 and DD20230260).
  • 摘要: 柴达木盆地东部欧南凹陷石炭系是新区、新层系油气勘探重点区域,钻井和露头揭示平面上上石炭统沉积特征差异大,沉积相展布特征认识不清,影响着柴东地区上石炭统油气勘探的部署。文章利用欧南凹陷二维地震资料,分析其地震反射内部结构和外部几何形态特征,在欧南凹陷上石炭统内共识别出平行席状地震相、亚平行席状地震相、丘状地震相、楔状地震相、斜交前积地震相和杂乱状地震相6种,并对其特征进行了详细的描述,建立了欧南凹陷上石炭统地震相的平面组合图;综合区域地质资料、露头、测井和地震资料,在地震沉积学和大陆架沉积理论的指导下,建立了欧南凹陷上石炭统地震相与沉积相之间的联系,并预测了其沉积相的展布特征。研究结果表明,上石炭世欧南凹陷由东向西依次发育河流−三角洲平原沉积体系、三角洲前缘沉积体系和前三角洲−深水陆棚沉积体系。

     

  • 图  1  柴达木盆地东部构造单元划分图(据刘成林等,2021Wei et al.,2021修改)

    Figure  1.  Map of the structural unit divisions of the eastern Qaidam Basin (modified after Liu et al., 2021; Wei et al., 2021)

    图  2  欧南凹陷上石炭统主要地震相类型

    Figure  2.  Main seismic facies types of Upper Carboniferous in the Ounan Depression

    图  3  柴东欧南凹陷上石炭统地震相平面组合图

    Figure  3.  Seismic facies plane assemblage of the Upper Carboniferous in the Ounan Depression

    图  4  840031测线上石炭统顶地层拉平图

    a—地震图;b—瞬时频率属性图;c—瞬时相位属性图

    Figure  4.  The flattening attribute map of the upper carboniferous strata along line 840031

    (a) The seismic map; (b) The instantaneous frequency attribute map; (c) The instantaneous phase attribute map

    图  5  过QDC1井地震十字剖面图

    Figure  5.  Seismic cross-section map through well QDC1

    图  6  过QDD1井地震十字剖面

    Figure  6.  Seismic cross-section map through well QDD1

    图  7  过CY2井地震剖面

    Figure  7.  Seismic section through well CY2

    图  8  柴东欧南凹陷上石炭统沉积相图

    Figure  8.  The sedimentary facies map of the Upper Carboniferous in the Ounan Depression

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出版历程
  • 收稿日期:  2023-05-17
  • 修回日期:  2023-09-14
  • 录用日期:  2023-10-20
  • 预出版日期:  2024-05-09
  • 刊出日期:  2024-06-28

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