岩性油气藏 ›› 2015, Vol. 27 ›› Issue (5): 7480.doi: 10.3969/j.issn.1673-8926.2015.05.012
黄苓渝1,张昌民1,刘江艳1,向小玲2,徐 发3,侯国伟3
Huang Lingyu1, Zhang Changmin1, Liu Jiangyan1, Xiang Xiaoling2, Xu Fa3, Hou Guowei3
摘要:
在调研国外文献的基础上,通过对中国东海西湖凹陷的区域构造背景及岩心资料进行对比分析,认为在东海西湖凹陷中发育砂岩侵入体。 研究区发育的砂岩侵入体包括大量泥岩碎屑、液化岩脉、泄水构造(碟柱状构造)、液化卷曲变形构造、重荷模与火焰状构造及球-枕状构造。 从沉积学角度对砂岩侵入体的形成机制、岩心特征及其对石油地质的意义等方面进行了简要的讨论。砂岩的侵入能够形成特殊的侵入圈闭,并能极大地提高储层的孔隙度和渗透率,从而改善油气储层的储集物性。 因此,正确认识并深入研究砂岩侵入体对岩性-地层油气藏的勘探开发具有重要意义。
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