邱隆伟;王义;代莉;宋璠;张在鹏;杨洋;

• 1:中国石油大学(华东)地球科学与技术学院

• 2:中国石化胜利油田分公司桩西采油厂

摘要(Abstract)：

为明确沾化凹陷孤北洼陷沙二段—沙三中亚段上部砂体平面展布规律,确定物源方向及沉积边界,利用岩心、粒度、测录井和地震等资料分析该区沉积体系,研究沉积相展布规律。结果表明:研究区主要发育辫状河三角洲、扇三角洲、浪控三角洲、滩坝和湖泊等沉积相;物源主要来自北部、东部和南部,西部和东北部也有较弱物源注入;辫状河三角洲主要分布于东部和北部桩南鼻状构造带;扇三角洲主要呈窄条带状沿埕东凸起展布,分布范围有限;浪控三角洲分布于南部孤北鼻状构造带;滨浅湖发育于古隆起两侧的东西次洼,半深湖—深湖集中发育在西次洼中,沉积体系具有一定继承性。同时,沙二段沉积期因湖盆整体处于湖平面下降和上升转折期,主要发育滩坝沉积相。该研究对提高研究区沉积相类型及展布规律识别的准确度、发掘深部地层及新探区具有指导意义。

关键词(KeyWords)：孤北洼陷;沙河街组;沙二段—沙三中亚段;沉积体系;沉积模式

Abstract:

Keywords:

基金项目(Foundation):国家科技重大专项(2011ZX05009-002);; 国家重点基础研究发展计划(973计划)项目(2014CB239002);; 国家自然科学基金石油化工联合重点基金项目(U1262203)

作者(Author):邱隆伟;王义;代莉;宋璠;张在鹏;杨洋;

Email:

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