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    用“伞式解构”方法剖析致密储层微观各向异性

    杜书恒 庞姗 柴光胜 汪贺 师永民

    杜书恒, 庞姗, 柴光胜, 汪贺, 师永民, 2020. 用“伞式解构”方法剖析致密储层微观各向异性. 地球科学, 45(1): 276-284. doi: 10.3799/dqkx.2018.567
    引用本文: 杜书恒, 庞姗, 柴光胜, 汪贺, 师永民, 2020. 用“伞式解构”方法剖析致密储层微观各向异性. 地球科学, 45(1): 276-284. doi: 10.3799/dqkx.2018.567
    Du Shuheng, Pang Shan, Chai Guangsheng, Wang He, Shi Yongmin, 2020. Quantitative Analysis on the Microscopic Anisotropy Characteristics of Pore and Mineral in Tight Reservoir by 'Umbrella Deconstruction' Method. Earth Science, 45(1): 276-284. doi: 10.3799/dqkx.2018.567
    Citation: Du Shuheng, Pang Shan, Chai Guangsheng, Wang He, Shi Yongmin, 2020. Quantitative Analysis on the Microscopic Anisotropy Characteristics of Pore and Mineral in Tight Reservoir by "Umbrella Deconstruction" Method. Earth Science, 45(1): 276-284. doi: 10.3799/dqkx.2018.567

    用“伞式解构”方法剖析致密储层微观各向异性

    doi: 10.3799/dqkx.2018.567
    基金项目: 

    国家自然科学基金项目 41902132

    中国科学院油气资源研究重点实验室开放基金项目 KLOR2018-6

    详细信息
      作者简介:

      杜书恒(1994-), 男, 博士, 助理研究员, 主要从事非常规油气综合研究

    • 中图分类号: P618

    Quantitative Analysis on the Microscopic Anisotropy Characteristics of Pore and Mineral in Tight Reservoir by "Umbrella Deconstruction" Method

    • 摘要: 致密油气储层作为非常规油气储层的重要类型,具有孔隙尺度小,微观非均质性强等显著特征.目前在大幅提高资源动用率方面仍面临重大理论挑战,探索潜力广阔.本研究利用“伞式解构”方法定量解析了中国鄂尔多斯盆地陆相致密砂岩储层孔隙和矿物的微观各向异性特征.实例研究显示,八向伞式切片微观孔喉发育存在显著的微观各向异性,各向填隙物发育特征差异明显,随着取样角度的变化,呈现连续非稳态分布.八向伞式切片分形维数是孔隙率、渗透率和孔喉发育概率的良好表征.研究可为揭示致密储层储渗机理及“甜点”分布规律,指导致密油气有效开发提供重要的理论支撑与实践依据.

       

    • 图  1  研究区地理位置

      Fig.  1.  Location of the study area

      图  2  “伞式解构”技术原理示意

      Du et al.(2018a, 2018b)

      Fig.  2.  Schematic diagram of "umbrella deconstruction" technology

      图  3  八向孔隙半径分布

      a.0°方向;b.22.5°方向;c.45°方向;d.67.5°方向;e.90°方向;f.112.5°方向;g.135°方向;h.157.5°方向

      Fig.  3.  Distribution of pore radius in eight directions

      图  4  八向喉道半径分布

      a.0°方向;b.22.5°方向;c.45°方向;d.67.5°方向;e.90°方向;f.112.5°方向;g.135°方向;h.157.5°方向

      Fig.  4.  Distribution of throat radius in eight directions

      图  5  八向切片孔喉属性参数分布

      Fig.  5.  Distribution of pore and throat parameters in eight direction

      图  6  八向切片孔喉属性参数变化曲线

      Fig.  6.  Change curve of pore and throat parameters in eight directions

      图  7  八向切片填隙物条带属性参数变化曲线

      Fig.  7.  Change curve of parameters of interfilling strip properties in eight directions

      图  8  八向孔喉分形维数与孔喉属性参数相关性分析

      Fig.  8.  Correlation analysis between pore-throat fractal dimension in eight directions and pore throat attribute parameters

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    出版历程
    • 收稿日期:  2018-10-26
    • 刊出日期:  2020-01-15

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