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东营凹陷旋回式深湖相烃源岩研究
引用本文:朱光有,金强,周建林.东营凹陷旋回式深湖相烃源岩研究[J].地质科学,2003,38(2):254-262.
作者姓名:朱光有  金强  周建林
作者单位:1. 石油大学地球资源与信息学院, 山东东营257061;2. 胜利油田胜利采油厂, 山东东营257051
基金项目:国家“十五”重大科技攻关项目 (编号 :2 0 0 1BA6 0 5A0 9)成果。
摘    要:对东营凹陷沙河街组烃源岩的研究发现:在灰褐色泥岩、纹层状褐色泥岩、钙质泥岩和油页岩中常常夹有泥质粉砂岩和少量浊积砂岩;对牛38井密集采样分析则指示有机碳含量等多项地球化学参数呈现出“波峰”、“波谷”状变化特征,沉积界面也清晰地记录了湖平面的旋回式(升降)变换过程。本文探讨了盆地的充填过程,建立了旋回式深湖相沉积的地层模式——平衡充填,并深入分析了该套烃源岩的地质地球化学特征和有机质的赋存状态,指出旋回式深湖相烃源岩与浊积砂和前三角洲砂体主要以交互式或包裹式构成最佳生储配置关系,有利于隐蔽油气藏的形成。

关 键 词:旋回式深湖相  烃源岩  平衡充填  东营凹陷  沙河街组
收稿时间:2002-07-23
修稿时间:2002年7月23日

SOURCE ROCK CHARACTERS OF CYCLIC DEEP-LAKE FACIES IN THE DONGYING DEPRESSION
Zhu Guangyou,Jin Qiang,Zhou Jianlin.SOURCE ROCK CHARACTERS OF CYCLIC DEEP-LAKE FACIES IN THE DONGYING DEPRESSION[J].Chinese Journal of Geology,2003,38(2):254-262.
Authors:Zhu Guangyou  Jin Qiang  Zhou Jianlin
Institution:1. Faculty of Geo resources and Information, University oF Petroleum, Dongying, Shandong 257061;2. Shengli Production Plant of Shengli Administration, Dongying, Shandong 257051
Abstract:Our work on source rocks of the Shahejie formation in the Dongying Depression discovered that the argillaceous siltstone as well as some turbiditic sandstone often occurred in the brown mudstone and oil shale. The geochemical parameters, samples being from the Well Niu 38, were characterized with fluctuant change. Moreover, the sedimentary interface clearly recorded the cycle transformation process of the lake level. This paper analyzed the filling process in the lake, set up a new model for cycle sedimentation in deep lake, namely, the equilibrium filling, and studied geochemical features of the source rocks and presentation state of the organic matters. To sum up, it was pointed out that the best optimum collocation might be composed of source rocks of cyclic deep lake facies with the turbiditic and deltaic sandstones alternately or enwrappingly, which was benefit to form buried pools.
Keywords:Cyclic deep  lake facies  Source rocks  Equilibrium filling  The Dongying Depression  The Shahejie Formation
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