利用露头、自然伽玛、岩石地球化学和测井地震一体化综合厘定层序界面&mdash;&mdash;以四川盆地上三叠统须家河组为例

白斌, 邹才能, 朱如凯, 翟文亮, 刘柳红, 戴朝成, 张健, 杜红权, 毛治国

doi:10.11764/j.issn.1672-1926.2010.01.78

天然气地球科学 >

2010 , Vol. 21 >Issue 1: 78 - 86

DOI: https://doi.org/10.11764/j.issn.1672-1926.2010.01.78

天然气地质学

利用露头、自然伽玛、岩石地球化学和测井地震一体化综合厘定层序界面——以四川盆地上三叠统须家河组为例

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1.中国石油勘探开发研究院提高石油采收率国家重点实验室, 北京 100083；
2.成都理工大学，四川成都 610059；3.中国石油西南油气田勘探处，四川成都 610051

白斌（1981-），男，陕西武功人，博士后，主要从事沉积构造研究.

收稿日期: 2009-10-23

修回日期: 2009-12-10

网络出版日期: 2010-02-10

基金资助

国家科技重大专项(编号：2008ZX05001-002);中国博士后科学基金(编号:20090460390)联合资助.

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Integrated Identification of Sequence Boundaries through Outcrop,Natural Gammaray Spectral,Rock Geochemistry ,Logging and Seismic:A Case of Upper Triassic Xujiahe Formation,Sichuan Basin

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1.State Key Laboratory of Enhanced Oil Recovery ,Research Institute of Petroleum Exploration and Development，PetroChina,Beijing 100083,China; 2.Chengdu University of Technology，Chengdu 610059，China; 3.Exploration Department of Southwest Oilfield, PetroChina,Chengdu 610051,China

Received date: 2009-10-23

Revised date: 2009-12-10

Online published: 2010-02-10

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摘要

基于层序地层单元形成过程中古气候环境及其控制下的湖平面突变面，以及层序单元中岩石粘土矿物、微量元素、镜质体反射率等微观参数突变面具有良好响应的原理，通过开展四川盆地上三叠统须家河组实测野外地质剖面、地震剖面、电测曲线等常规识别方法，结合野外自然伽玛数据测量、岩石地球化学特征等微观综合识别层序界面方法，最终在四川盆地上三叠统须家河组地层中识别出7个层序界面，据此划分为6个三级层序。为减少层序地层研究中依靠人为经验识别层序界面的随意性，探索建立综合识别层序界面，对建立划分层序格架的精确方法提供新的尝试。

关键词： 层序界面; 露头; 自然伽玛; 岩石地球化学

本文引用格式

白斌, 邹才能, 朱如凯, 翟文亮, 刘柳红, 戴朝成, 张健, 杜红权, 毛治国 . 利用露头、自然伽玛、岩石地球化学和测井地震一体化综合厘定层序界面——以四川盆地上三叠统须家河组为例[J]. 天然气地球科学, 2010 , 21(1) : 78 -86 . DOI: 10.11764/j.issn.1672-1926.2010.01.78

Abstract

Seven sequence boundaries in the upper Triassic Xujiahe Formation of Sichuan basin were identified based on actual measurement of geological cross sections,seismic profile,electrical measuring curves and microscopic integrated identification of sequence boundary,such as field measured gamma data and rock geochemistry; because the good reflection between the abrupt lake changes controlled by paleoclimate and microcosmic information of clay mineral,trace element,vitrinite reflectance(R_O) in the sequence unit during the formation of sequence units.Thus,the six third-rank sequences were classified.This research result will try to reduce the artificially empirical randomness in identifying the sequence boundary,and setup the integrated identification the sequence boundary and the precise classification of the sequence framework.

Key words： Sequence boundary; Outcrop; Natural gammaray spectral; Rock geochemistry.

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