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渤海湾盆地东营凹陷古近系泥页岩孔隙特征及孔隙度演化规律

李钜源

李钜源. 渤海湾盆地东营凹陷古近系泥页岩孔隙特征及孔隙度演化规律[J]. 石油实验地质, 2015, 37(5): 566-574. doi: 10.11781/sysydz201505566
引用本文: 李钜源. 渤海湾盆地东营凹陷古近系泥页岩孔隙特征及孔隙度演化规律[J]. 石油实验地质, 2015, 37(5): 566-574. doi: 10.11781/sysydz201505566
Li Juyuan. Pore characteristics and their evolution in Paleogene mud shales, Dongying Sag, Bohai Bay Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2015, 37(5): 566-574. doi: 10.11781/sysydz201505566
Citation: Li Juyuan. Pore characteristics and their evolution in Paleogene mud shales, Dongying Sag, Bohai Bay Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2015, 37(5): 566-574. doi: 10.11781/sysydz201505566

渤海湾盆地东营凹陷古近系泥页岩孔隙特征及孔隙度演化规律

doi: 10.11781/sysydz201505566
基金项目: 国家自然科学基金项目"湖相页岩油可动性基本地质条件研究"(41372129)、国家重点基础研究发展计划(973计划)项目"陆相页岩油资源潜力与分布规律"(2014CB239105)和中国石化科技攻关项目"东营凹陷页岩油气富集条件与有利区预测"(P11066)资助。
详细信息
    作者简介:

    李钜源(1962—),男,博士、高级工程师,从事石油地质及地球化学研究。E-mail:lijuyuan356.slyt@sinopec.com。

  • 中图分类号: TE132.2

Pore characteristics and their evolution in Paleogene mud shales, Dongying Sag, Bohai Bay Basin

  • 摘要: 基于现代实验手段,对渤海湾盆地东营凹陷古近系沙河街组沙三下亚段和沙四上亚段泥页岩孔隙进行观察分析,研究其孔径分布和孔隙度与埋深的变化关系。指出黏土矿物晶间孔、方解石晶间孔、砂质粒间孔、黄铁矿晶间孔和有机孔隙等是东营凹陷古近系泥页岩的主要孔隙类型;泥页岩中纳米级孔隙非常发育,25 nm以下孔隙占孔隙总体积的49.7%~86.3%;并阐明了孔隙度随深度的变化规律。通过对东营凹陷古近系孔隙度演化特征和影响因素的系统研究,建立了泥页岩孔隙演化模式,把东营凹陷古近系泥页岩孔隙演化划分为基本面貌形成阶段、调整改造阶段和结构滞变阶段,深入剖析了各阶段孔隙度演化规律和主控因素,认为第二和第三阶段对页岩油气储集性能的影响最大;指出具有较大的厚度、较高的有机质丰度、黄铁矿较为发育、热硫酸盐还原作用较强是泥页岩储集空间发育的有利条件。

     

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  • 收稿日期:  2014-09-22
  • 修回日期:  2015-07-16
  • 刊出日期:  2015-09-28

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