柴永波;杨波;王清斌;牛成民;李欢;

• 1:中海石油(中国)有限公司天津分公司

摘要(Abstract)：

通过黄河口凹陷BZ34区(火山岩发育区)与渤中西环、秦南凹陷(火山岩不发育区)颗粒接触类型、颗粒变形程度、东营组砂岩压实作用定量评价的对比分析,结合泥岩声波时差随深度的变化规律,探讨了研究区火山喷发机构对目的层压实作用的影响。结果表明,尽管BZ34区砂岩中塑性火山岩屑含量较高,但其压实程度弱于渤中西环、秦南凹陷。火山岩顶板以下泥岩声波时差明显增大,表明地层处于欠压实状态,证实了火山岩顶底板及火山通道的组合降低了泥岩的压实程度,有利于该段地层中砂岩储层孔隙的保存。火山物质水解形成的沸石、方解石等胶结物充填于骨架颗粒之间,增强了碎屑颗粒的抗压实强度。在火山活动相关的同生碱性水介质环境下,长石、岩屑的溶蚀程度弱,有利于其刚性强度的保持。

关键词(KeyWords)： 黄河口凹陷;BZ34区;火山岩;压实作用

Abstract:

Keywords:

基金项目(Foundation): 国家重大油气专项课题(2011ZX05023-001-001);; 国家自然科学基金项目(41572084)

作者(Author): 柴永波;杨波;王清斌;牛成民;李欢;

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DOI:

参考文献(References)：

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