| 利用侵入岩地震相变化特征识别断层 |
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| 引用本文： | 陈军,周彬,陈剑铭,崔宝雷,姜传芳.利用侵入岩地震相变化特征识别断层[J].石油地球物理勘探,2011(5):790-794,836,665,666. |
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| 作者姓名： | 陈军 周彬 陈剑铭 崔宝雷 姜传芳 |
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| 作者单位： | 中石化江苏油田分公司地质科学研究院;中国石油大学地球科学与技术学院; |
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| 摘 要： | 苏北盆地高邮凹陷北斜坡侵入岩岩性为辉绿岩,辉绿岩与砂泥质围岩间通常存在明显的波阻抗差,在地震剖面上常表现为中低频、强振幅,连续性好的反射特征,导致侵入岩强反射干扰了围岩的反射,造成层位和断层识别困难,但利用其反射特征变化的信息仍可以识别断层。本文通过研究晚期侵入沉积地层的火成岩岩体变化模式和地震反射特征,结合地震正演模拟,建立了侵入岩地震相特征与断层关系的六种典型对应模式,即弯折相与倾向变化对应、错断相与岩体中断对应、陡倾相与断面侵入对应、变频相与厚度变化对应、分叉相与岩体分叉对应、终止相与岩体终止对应,利用该模式结合其他方法进行断层判别,提高了构造解释精度,并且在高邮凹陷北斜坡取得了很好的油气勘探效果。
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| 关 键 词： | 侵入岩 辉绿岩 地震相 正演模拟 断层识别 |
Fault identification with characteristics of seismic facies of intrusive rocks |
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| Chen Jun,Zhou Bin,Chen Jian-ming,Cui Bao-lei , Jiang Chuan-fang..Geological Scientific Research Institute of Jiangsu Oilfield Company,Sinopec,Yangzhou,Jiangsu ,China.College of Geosciences , Technology,China University of Petroleum,Dongying,Sh,ong ,China.Fault identification with characteristics of seismic facies of intrusive rocks[J].Oil Geophysical Prospecting,2011(5):790-794,836,665,666. |
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| Authors: | Chen Jun Zhou Bin Chen Jian-ming Cui Bao-lei Jiang Chuan-fangGeological Scientific Research Institute of Jiangsu Oilfield Company Sinopec Yangzhou Jiangsu ChinaCollege of Geosciences Technology China University of Petroleum Dongying Sh ong China |
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| Affiliation: | Chen Jun1,Zhou Bin1,Chen Jian-ming2,Cui Bao-lei1 and Jiang Chuan-fang1.1.Geological Scientific Research Institute of Jiangsu Oilfield Company,Sinopec,Yangzhou,Jiangsu 225009,China2.College of Geosciences and Technology,China University of Petroleum(East China),Dongying,Shandong 257061,China |
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| Abstract: | Lithology of intrusive rocks is diabase in the northern slope of Gaoyou Depression,North Jiangsu Basin.There is difference of wave impedance between the diabase and the arenaceous pelitic wall-rock,which often shows low-medium frequency strong amplitude,and good continuity in seismic sections.These strong reflection characteristics of the intrusive rocks disturb reflections of wall-rock,and make horizon and fault identification more difficult.Based on igneous rock mass change pattern and seismic reflection ... |
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| Keywords: | volcanic-intrusive rocks diabase forward modeling seismic facies fault identification |
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