苏北盆地白驹凹陷古近系层序地层及生储盖组合分析

魏祥峰, 张廷山, 魏祥华, 梁兴, 姚秋昌

doi:10.11764/j.issn.1672-1926.2011.04.674

天然气地球科学 >

2011 , Vol. 22 >Issue 4: 674 - 683

DOI: https://doi.org/10.11764/j.issn.1672-1926.2011.04.674

天然气地质学

苏北盆地白驹凹陷古近系层序地层及生储盖组合分析

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1.西南石油大学资源与环境学院，四川成都 610500；
2.中国石化中原油田公司，河南濮阳 457001；
3.中国石油浙江油田公司，浙江杭州 310023

魏祥峰（1984-），男，山东济宁人，博士研究生，主要从事沉积学、层序地层学研究.

收稿日期: 2010-05-05

修回日期: 2011-05-31

网络出版日期: 2011-08-10

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Paleogene Sequence Stratigraphy and Source-Reservoi-Cap Rock Assemblage in Baiju Sag

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1.Institute of Resources and Environment,Southwest Petroleum University,Chengdu 610500,China;
2.Zhongyuan Oil Field Branch Company of SINOPEC,Puyang 457001,China;
3.Zhejiang Oilfield Company of PetroChina,Hangzhou 310023,China

Received date: 2010-05-05

Revised date: 2011-05-31

Online published: 2011-08-10

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摘要

在Vail经典层序地层学理论指导下，综合利用岩心、钻井、测井以及地震等资料，在白驹凹陷古近系共识别出6个层序界面，划分出1个Ⅰ级层序、2个Ⅱ级层序、5个Ⅲ级层序，并认为Ⅲ级层序SQ1—SQ4、SQ5分别与盆地坳陷—断陷阶段和强烈断陷阶段相对应。运用等时对比理论和技术方法，建立了白驹凹陷古近系层序地层格架，并详细地讨论了古近系Ⅲ级层序与生储盖组合的关系,认为低水位及晚期高水位体系域为有利储层的发育位置，湖侵体系域及早期高水位体系域则为烃源岩和盖层的发育位置，之间相互组合形成了3套生储盖组合，其中下生储盖组合为白驹凹陷古近系最好的一套生储盖组合。

关键词： 层序地层; 生储盖组合; 古近系; 白驹凹陷

本文引用格式

魏祥峰, 张廷山, 魏祥华, 梁兴, 姚秋昌 . 苏北盆地白驹凹陷古近系层序地层及生储盖组合分析[J]. 天然气地球科学, 2011 , 22(4) : 674 -683 . DOI: 10.11764/j.issn.1672-1926.2011.04.674

Abstract

Based on drilling core,bore well,well logs and seismic data,we use the calssical Vail theory of sequence stratigraphy to identify six sequence boundaries in Paleogene Baiju sag,which is divided into one first-order sequence,two second\|order sequences,and five three-order sequences.The third-order sequences of SQ1-SQ4 and SQ5 are corresponding to the basin's subsiding-fault depressing stage and strong fault-depressing stage.We use the isochronous correlation to establish the Paleogene sequence stratigraphic framework in the Baiju sag,and discuss the relationship between source-reservoir-cap rock assemblages and third-order sequences.The low water level and later high water level system fields are the favorable place of reservoir development.The transgressive and early high water lelve system fields are the profitable place of source and cap rock formation.Three sets of source-reservoir-cap assemblages are formed among these fields,and the lower assemblage is the best one in Paleogene in the Baiju sag.

Key words： Sequence stratigraphy; Source-reservoir-cap rock assemblage; Paleogene; Baiju Sag.

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