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    南翼山富钾锂卤水储层识别方法

    侯献华 冯磊 郑绵平 王伟 樊馥 赵为永 高雪峰

    侯献华, 冯磊, 郑绵平, 王伟, 樊馥, 赵为永, 高雪峰, 2022. 南翼山富钾锂卤水储层识别方法. 地球科学, 47(1): 45-55. doi: 10.3799/dqkx.2021.123
    引用本文: 侯献华, 冯磊, 郑绵平, 王伟, 樊馥, 赵为永, 高雪峰, 2022. 南翼山富钾锂卤水储层识别方法. 地球科学, 47(1): 45-55. doi: 10.3799/dqkx.2021.123
    Hou Xianhua, Feng Lei, Zheng Mianping, Wang Wei, Fan Fu, Zhao Weiyong, Gao Xuefeng, 2022. Recognition Method of Potassium-Rich Lithium Brine Reservoir in Nanyishan. Earth Science, 47(1): 45-55. doi: 10.3799/dqkx.2021.123
    Citation: Hou Xianhua, Feng Lei, Zheng Mianping, Wang Wei, Fan Fu, Zhao Weiyong, Gao Xuefeng, 2022. Recognition Method of Potassium-Rich Lithium Brine Reservoir in Nanyishan. Earth Science, 47(1): 45-55. doi: 10.3799/dqkx.2021.123

    南翼山富钾锂卤水储层识别方法

    doi: 10.3799/dqkx.2021.123
    基金项目: 

    国家重点研发计划课题 2017YFC0602802

    中国地质调查局项目 DD20201115

    中国地质调查局项目 DD20211343

    详细信息
      作者简介:

      侯献华(1972-), 男, 教授级高工, 主要从事盐类资源调查评价与成盐环境研究.ORCID: 0000-0001-7899-7291.E-mail: hxh2858@126.com

      通讯作者:

      王伟, E-mail: wang_wei@lreis.ac.cn

    • 中图分类号: P618.13

    Recognition Method of Potassium-Rich Lithium Brine Reservoir in Nanyishan

    • 摘要:

      油井调查显示,在柴达木西部以南翼山为代表的储油构造区,广泛分布含钾、锂等有用元素的深层卤水,在古近纪-新近纪不同层位均有分布,具有极大的社会经济价值. 根据构造及地层岩性特征,认为卤水储存空间为孔隙、裂隙型,由于南翼山地区含水层在声波测井曲线中响应特征并不明显,传统以声波测井为约束条件的波阻抗反演技术难以有效识别卤水储层,到目前为止,对该类型卤水在各层位的赋存状态仍没有好的判识方法. 因此,基于神经网络的联合反演技术,将对卤水层响应更明显的感应测井信息与地震信息相结合,利用神经网络极强的特征模式快速提取能力,融合感应测井、地震波形、地震属性、波阻抗等数据,获得了能够更精确反映富钾锂卤水储层的三维感应数据体,提高了卤水储层的识别能力,为预测南翼山富钾锂卤水在纵向和横向的分布提供了重要依据.

       

    • 图  1  南翼山地区地理位置(据张宁生等,2006修改)

      Fig.  1.  Location of Nanyishan (modified from Zhang et al., 2006)

      图  2  钻井取心岩性特征

      a.南浅3-6井泥晶灰岩(1 611.5 m);b.南1-3含砂屑泥晶云岩(3 020.55 m);c.南浅3-09井藻灰岩(1 570 m);d.南浅3-6井粉砂岩(1 594.5 m)

      Fig.  2.  Lithology characteristics of drilling coring

      图  3  N6井含水层1组测井响应特征

      Fig.  3.  Logging response of aquifer group 1 in Well N6

      图  4  N6井合成地震记录

      a.原始地震道;b.合成地震道;c.测井曲线

      Fig.  4.  Synthetic seismic record of Well N6

      图  5  含水层地震反射特征

      Fig.  5.  Seismic reflection characteristics of aquifer

      图  6  南翼山含水层1组T0构造图

      Fig.  6.  T0 configuration of Nanyishan aquifer group 1

      图  7  神经网络卤水储层反演示意图

      Fig.  7.  ANN inversion of brine reservoir

      图  8  联合反演富钾锂卤水储层流程

      Fig.  8.  Flow of joint inversion of potassium-rich lithium brine reservoir

      图  9  地震剖面及波阻抗剖面

      Fig.  9.  Seismic section and wave impedance section

      图  10  预测感应数据与实际感应数据交会图

      Fig.  10.  Cross plot of predicted induction data and actual induction data

      图  11  反演得到的感应数据剖面

      Fig.  11.  Inverted induction data profile

      图  12  南翼山富钾锂卤水储层1组分布

      Fig.  12.  Distribution of group 1 of potassium-rich lithium brine reservoir in Nanyishan

      表  1  柴达木盆地西部古近系和新近系地层划分

      Table  1.   Division of Paleogene and Neogene strata in the west of Qaidam Basin

      地质年代(Ma) 地层代号
      ~2.8 新生界 第四系 全新统 七个泉组 Q1+2
      更心统
      2.8~5.1 新近系 上新统 狮子沟组 N$ {}_{2}^{3} $
      5.1~12.0 上油砂山组 N$ {}_{2}^{2} $
      12.0~24.6 下油沙山组 N$ {}_{2}^{1} $
      24.6~40.5 中新统 上干柴沟组 N1
      40.5~52.0 古近系 渐新统 下干柴沟组 E3
      52.0~65.0 始新统 路乐河组 E1+2
      古新统
      注:据党玉琪等(2004).
      下载: 导出CSV
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