史云清;李宏涛;肖开华;冯琼;

• 1:页岩油气富集机理有效开发国家重点实验室

• 2:中国石化石油勘探开发研究院

• 3:中国石化海相油气藏开发重点实验室

摘要(Abstract)：

为确定川西坳陷中段西部气藏的有利储层发育层段,利用薄片、岩心、测井、地震等资料,研究雷口坡组四段(简称雷四段)沉积层序,分析它对储层发育的控制。结果表明,雷四段可划分为一个完整的三级层序和三个四级层序,其中雷四上亚段对应上部四级层序,进一步划分为四个五级和多个六级高频层序,由向上变浅的高频沉积旋回组成;井间高频层序类型相似,横向一致性对比好,表明形成环境近似。雷四上亚段主要发育潮坪相的潮间带和潮下带亚相沉积,纵向上岩性变化频繁,横向上分布较为稳定;潮间带是储层发育的有利亚相,以Ⅱ、Ⅲ类储层为主,发育于上、下两个储层段中上部,对应五级和六级高频层序的中上部;高频层序反映的相对海平面变化控制潮间带有利岩相分布,影响后期成岩作用,是储层发育与空间展布的关键。

关键词(KeyWords)：川西坳陷中段西部;雷口坡组四段;层序地层;沉积特征;储层分布;控制因素

Abstract:

Keywords:

基金项目(Foundation):国家科技重大专项(2016ZX05017-005);; 中国石油化工股份有限公司科技部项目(P16111)

作者(Author):史云清;李宏涛;肖开华;冯琼;

Email:

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