| 车镇凹陷沙四段层序划分及格架展布研究 |
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| 引用本文： | 刘建伟.车镇凹陷沙四段层序划分及格架展布研究[J].石油地质与工程,2021,35(1). |
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| 作者姓名： | 刘建伟 |
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| 作者单位： | 中国石化胜利油田分公司物探研究院,山东东营257000 |
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| 基金项目： | 中国石化科技项目“济阳坳陷沙四–孔店组成藏条件认识及勘探方向”(P20060–1)。 |
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| 摘 要： | 车镇凹陷沙四段是区内较为重要的勘探层系,但该段层序特征划分难且分布规律复杂。通过应用地震、测井相结合的方法,建立了层序划分方案,明确了各层序在平面上的展布。研究表明:车镇凹陷沙四段可划分为3个三级层序,每个层序又可划分出湖进体系域和湖退体系域,其中车西洼陷和郭局子洼陷为研究区两个相对沉降中心,控制了层序Ⅰ和层序Ⅱ的展布格局和沉积特征;层序Ⅲ受构造抬升剥蚀在车东地区不发育,车西地区仅局部残留。
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| 关 键 词： | 车镇凹陷 沙四段 层序地层 地层格架 空间展布 |
Sequence division and framework distribution of the fourth member of Shahejie formation in Chezhen sag |
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| LIU Jianwei.Sequence division and framework distribution of the fourth member of Shahejie formation in Chezhen sag[J].Petroleum Geology and Engineering,2021,35(1). |
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| Authors: | LIU Jianwei |
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| Affiliation: | ,Geophysical Exploration Research Institute of Shengli Oilfield Company,SINOPEC |
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| Abstract: | The fourth member of Shahejie formation in Chezhen sag is an important exploration layer, but the sequence characteristics of this member are difficult to be divided and the distribution law is complex. Through the comprehensive application of seismic and logging methods, the sequence division scheme is established, and the distribution of each sequence on the plane is defined. The results show that the fourth member of Shahejie formation in Chezhen sag can be divided into three third-order sequences, and each sequence can be divided into transgressive system tract and retrograde system tract. Chexi and Guojuzi subsags are two relative subsidence in the study area, which controls the distribution pattern and sedimentary characteristics of sequence Ⅰ and Ⅱ. Due to tectonic uplift and denudation, sequence Ⅲ is not developed in Chedong area and remains locally in Chexi area. |
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| Keywords: | Chezhen sag the fourth member of Shahejie formation sequence stratigraphy stratigraphic framework spatial distribution |
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