含流体薄层时移地震AVA/AVF特征分析

doi:10.13278/j.cnki.jjuese.201703302

吉林大学学报(地球科学版) ›› 2017, Vol. 47 ›› Issue (3): 884-898.doi: 10.13278/j.cnki.jjuese.201703302

含流体薄层时移地震AVA/AVF特征分析

姚振岸^1,2, 孙成禹^1,2

1. 中国石油大学(华东)地球科学与技术学院, 山东青岛 266580;
2. 青岛海洋科学与技术国家实验室海洋矿产资源评价与探测技术功能实验室, 山东青岛 266071

收稿日期:2016-09-01 出版日期:2017-05-26 发布日期:2017-05-26
作者简介:姚振岸(1990-), 男,博士研究生,主要从事地震波传播理论、地震资料处理、储层岩石物理等方面的研究,E-mail:an6428060@163.com
基金资助:
国家自然科学基金项目（41374123，41504097）；山东省自然科学基金项目（ZR2013DQ020）；国家科技重大专项项目（2016ZX05006-002）

AVA/AVF Characteristic Analysis of Fluid-Containing Thin-Bed in Time-Lapse Seismic

Yao Zhen'an^1,2, Sun Chengyu^1,2

1. School of Geoscience, China University of Petroleum (East china), Qingdao 266580,Shandong, China;
2. Evaluation and Detection Technology Laboratory of Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071,Shandong, China

Received:2016-09-01 Online:2017-05-26 Published:2017-05-26
Supported by:
Supported by the National Natural Science Foundation of China (41374123, 41504097), the Natural Science Foundation of Shandong Province (ZR2013DQ020) and the National Science and Technology Major Project of China (2016ZX05006-002)

摘要/Abstract

摘要： 随着地震勘探的不断深入，对薄互层反射机理的研究变得越来越重要。为了准确获得薄层的频率特性并了解其时移变化规律，本文从弹性波动理论出发，讨论分析了薄层的反射AVA/AVF（amplitude variation with incident angle/amplitude variation with frequency）特征，并进行了数值模拟实验予以验证；基于实际测井资料和岩石物理等效介质理论，分析了含流体薄层的时移地震AVA/AVF特征。研究表明：薄层厚度和频率对薄层反射振幅响应的影响是等价的。随着薄层厚度的增加，薄层反射频率特性逐渐出现周期性变化；随着入射角度的增加，薄层反射频率特性逐渐向高频方向延伸。在薄层油气藏注水开发过程中，随着含水饱和度的增大，薄层反射P波频率特性向高频方向延伸，而薄层反射P-SV波频率特性基本保持不变。

关键词: 含流体薄层, 时移地震, AVA, AVF

Abstract: With the rapid development of seismic exploration, it is more and more important to explore reflection reflected mechanism of thin interbeds. In order to acquire the frequency characteristic of thin bed reflection and realize its changing feature in time lapse seismic, on the one hand, the authors discussed the AVA/AVF characteristic of fluid-containing thin bed based on elastic wave theory, and carried numerical simulation experiment; on the other hand, the authors analyzed time shift characteristics of fluid-containing thin bed based on the equivalent medium theory with the actual logging data. As it is shown that the amplitude responses associated with bed-thinning is equivalent to that associated with an increase in dominant frequency. With the increase of thickness, the reflection of thin bed experiences greater fluctuations. The frequency characteristic of a thin bed extends to higher frequency with increasing of incident angle. In the water flooding extraction process of thin layer reservoir, with increasing of the water saturation, the frequency characteristic of P wave reflection extends to higher frequency, whereas that of P-SV wave reflection remains about the same.

Key words: fluid-containing thin-bed, time-lapse seismic, AVA, AVF

中图分类号:

P631.4

姚振岸, 孙成禹. 含流体薄层时移地震AVA/AVF特征分析[J]. 吉林大学学报(地球科学版), 2017, 47(3): 884-898.

Yao Zhen'an, Sun Chengyu. AVA/AVF Characteristic Analysis of Fluid-Containing Thin-Bed in Time-Lapse Seismic[J]. Journal of Jilin University(Earth Science Edition), 2017, 47(3): 884-898.

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含流体薄层时移地震AVA/AVF特征分析

AVA/AVF Characteristic Analysis of Fluid-Containing Thin-Bed in Time-Lapse Seismic

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