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鄂尔多斯盆地华庆地区长63重力流沉积特征

舒婷 刘桂珍 郭健

舒婷, 刘桂珍, 郭健. 鄂尔多斯盆地华庆地区长63重力流沉积特征[J]. 地质科技通报, 2023, 42(6): 140-150. doi: 10.19509/j.cnki.dzkq.tb20220452
引用本文: 舒婷, 刘桂珍, 郭健. 鄂尔多斯盆地华庆地区长63重力流沉积特征[J]. 地质科技通报, 2023, 42(6): 140-150. doi: 10.19509/j.cnki.dzkq.tb20220452
Shu Ting, Liu Guizhen, Guo Jian. Characteristics of gravity flow sedimentation of Chang 63 in the Huaqing area, Ordos Basin[J]. Bulletin of Geological Science and Technology, 2023, 42(6): 140-150. doi: 10.19509/j.cnki.dzkq.tb20220452
Citation: Shu Ting, Liu Guizhen, Guo Jian. Characteristics of gravity flow sedimentation of Chang 63 in the Huaqing area, Ordos Basin[J]. Bulletin of Geological Science and Technology, 2023, 42(6): 140-150. doi: 10.19509/j.cnki.dzkq.tb20220452

鄂尔多斯盆地华庆地区长63重力流沉积特征

doi: 10.19509/j.cnki.dzkq.tb20220452
基金项目: 

国家自然科学基金项目 41602156

陕西省教育厅重点科学研究计划项目 20JS126

西安石油大学研究生创新与实践能力培养计划联合资助项目 YCS21113107

详细信息
    作者简介:

    舒婷(1997—),女,现正攻读矿物学、岩石学、矿床学专业硕士学位,主要从事沉积学与储层地质学的研究工作。E-mail: 18181833204@163.com

    通讯作者:

    刘桂珍(1976—),女,副教授,主要从事沉积学与储层地质学方面教学和科研工作。E-mail: liuguizhen509@xsyu.edu.cn

  • 中图分类号: P618.13

Characteristics of gravity flow sedimentation of Chang 63 in the Huaqing area, Ordos Basin

  • 摘要:

    湖盆重力流沉积砂体是致密油勘探的有利目标区。综合利用岩心观察、分析化验及测录井资料, 对鄂尔多斯盆地华庆地区长63砂层组重力流沉积类型、特征、主控因素及沉积模式展开了研究。研究表明: 华庆地区长63砂层组沉积粒度细, 粒度概率为上凸两段式, 跳跃和悬浮总体发育, 具有典型深水重力流沉积的层理构造; 华庆地区重力流沉积划分为滑塌沉积、碎屑流沉积和浊流沉积3种类型, 组成水道、朵叶及朵叶侧缘3种沉积微相。华庆地区长63深水重力流沉积发育主要受东北充足物源供给、足够湖盆水深、湖盆发育的深水坡折地形及延长期火山、地震等沉积事件影响, 不同相带重力流沉积类型、砂体厚度与内部结构表现出明显差异性。在靠近三角洲源区以水道为主, 由砂质碎屑流沉积和滑塌沉积组成, 砂体薄而分布局限; 中部沉积以朵叶为主, 主要是砂质碎屑流沉积夹浊流沉积, 沉积砂体垂向叠加, 厚层展布; 深湖区主要为朵叶侧缘, 以浊流沉积为主, 砂体呈薄互层分布。本研究不仅对湖盆重力流沉积认识有一定的补充作用, 同时为后期重力流砂体中油气勘探与开发提供了重要地质依据。

     

  • 图 1  鄂尔多斯盆地长6沉积相图(a)与延长组综合柱状图(b)

    Figure 1.  Sedimentary facies diagram of Chang 6 (a) and comprehensive bar diagram of Yanchang Formation (b) in the Ordos Basin

    图 2  华庆地区长63砂层组砂岩粒度特征

    Figure 2.  Grain size characteristics of the Chang 63 sandstone in the Huaqing area

    图 3  华庆地区长63砂层组深水重力流沉积构造

    a. S136井, 2 111.8 m, 沟模; b. B136井, 2 131.2 m, 重荷模; c. B152井, 2 156.3 m, 砂岩与深水泥岩突变接触; d. B516井, 2 067.7 m, 火焰构造; e. X176井, 1 727.4 m, 重力负荷压实作用下的火焰构造; f. B283井, 1 930.65 m, 滑塌变形; g. B464井, 2 093.6 m, 滑塌岩; h. L72井, 1 796.2 m, 滑动切截; i. B152井, 2 156.3 m, 正粒序砂岩与泥岩突变接触; j. L45井, 2 286.77 m, 具反粒序特征; k. B465井, 2 071.4 m, 发育较完整的鲍马序列浊积岩; l. B213井, 2 151.3 m, 泥岩包裹厚层块状砂岩,砂质碎屑流沉积

    Figure 3.  Sedimentary structures in deep-water gravity flow deposits from the Chang 63 sandstone in the Huaqing area

    图 4  华庆地区长63砂层组微观储层特征

    a. B152井, 长63, 2 132.4 m, 粒间孔, 钙质胶结; b. B411井, 长63, 2 123.45 m, 绿泥石胶结、石英微晶、铁白云石胶结; c. L46井, 2 266.9 m, 高岭石充填孔隙; d. B230井, 2 131.31 m, 长63, 致密, 钙化碎屑; e. B491井, 2 151.67 m, 高岭石、伊利石胶结; f. B491井, 长63, 2 151.67 m, 云母弯曲变形

    Figure 4.  Microscopic pore characteristics of the Chang 63 sandstone in the Huaqing area

    图 5  华庆地区延长组长63砂层组测井相图

    Figure 5.  Logging facies of the Chang 63 sandstone of Yanchang Formation in the Huaqing area

    图 6  华庆地区长63砂层组B153单井沉积相图

    Figure 6.  Sedimentary facies of the Chang 63 sandstone in Well B153 of the Huaqing area

    图 7  华庆地区延长组长63沉积相连井剖面图(剖面位置见图 8)

    a. 垂直物源方向;b. 顺物源方向

    Figure 7.  Sedimentary facies of Chang 63 among wells for Yangchang Formation in the Huaqing area

    图 8  华庆地区B153井区长63砂层组沉积相平面图

    a. 长6332砂岩厚度平面图; b. 长6331砂岩厚度平面图; c. 长6322砂岩厚度平面图; d. 长6321砂岩厚度平面图; e. 长6312砂岩厚度平面图; f. 长6311砂岩厚度平面图

    Figure 8.  Distribution of sedimentary facies for the Chang 63 sandstone in the B153 well area, Huaqing area

    图 9  鄂尔多斯盆地华庆地区长63砂层组重力流沉积模式图

    Figure 9.  Gravityflow sedimentary model of Chang 63 sandstone in the Huaqing area, Ordos basin

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出版历程
  • 收稿日期:  2022-08-19
  • 录用日期:  2023-02-13
  • 修回日期:  2023-01-19

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