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物探与化探  2020, Vol. 44 Issue (2): 321-328    DOI: 10.11720/wtyht.2020.1311
  方法研究·信息处理·仪器研制 本期目录 | 过刊浏览 | 高级检索 |
敏感频率地震属性在薄层砂体预测中的应用——以松辽盆地肇源地区为例
安鹏, 于志龙, 刘专, 马云海, 李丽, 刘凤轩
东方地球物理公司 地质研究中心,河北 涿州 072750
The application of sensitive frequency seismic attributes to thin sand body prediction:Exemplified by Zhaoyuan area in Songliao Basin
Peng AN, Zhi-Long YU, Zhuan LIU, Yun-Hai MA, Li LI, Feng-Xuan LIU
Geological Research Center,BGP,Zhuozhou 072750,China
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摘要 

以松辽盆地北部肇源地区Y5井区扶余油层河道砂体为研究对象,针对砂体厚度薄、横向变化快以及相同厚度砂体地震响应特征不一致的现象,在正演模拟分析目标砂体的地震响应特征基础上,采用时频分析技术,通过广义S变换在频率域优选不同厚度及组合砂体对应的敏感频率,依托敏感频率重构数据,消除砂体理论响应地震波形与地震剖面特征不一致情形,进而优选地震属性预测砂体展布。研究结果表明:利用敏感频率重构数据体提取的地震属性,可以有效提高薄层河道砂体的预测精度,大大降低油田勘探开发风险。

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安鹏
于志龙
刘专
马云海
李丽
刘凤轩
关键词 河道砂体薄层调谐时频分析敏感频率重构    
Abstract

In this paper,the channel sand body of Fuyu oil reservoir in Y5 well area of Zhaoyuan area in northern Songliao Basin was chosen as the research object.In view of the phenomena that the sand body thickness is thin,the lateral change is prominent,and the seismic response characteristics of the sand body of the same thickness are inconsistent,the authors adopted the time-frequency analysis technique based on the simulation analysis of the seismic response characteristics of the target sand body.The generalized S transform was used to optimize the sensitive frequency of different thicknesses and combined sand bodies in the frequency domain,and the data were reconstructed based on the sensitive frequency to eliminate the sand.The body and the seismic profile characteristics were inconsistent,and it was better to predict the sand body distribution by seismic attributes.The research results show that using the sensitive frequency to reconstruct the seismic attributes extracted by the data body can effectively improve the prediction accuracy of the thin-layer channel sand body and greatly reduce the risk of oilfield exploration and development.

Key wordschannel sand body    thin layer tuning    time frequency analysis    sensitive frequency reconstruction
收稿日期: 2019-06-10      出版日期: 2020-04-22
ZTFLH:  P631.4  
基金资助:“十三五”国家重大科技专项“陆上宽频高密度地震勘探配套技术”课题(2017ZX05018-003)
作者简介: 安鹏(1984-),男,高级工程师,2009年获中国石油大学(华东)地球探测与信息技术专业硕士学位,现在东方地球物理公司研究院地质研究中心从事地质综合研究工作。
引用本文:   
安鹏, 于志龙, 刘专, 马云海, 李丽, 刘凤轩. 敏感频率地震属性在薄层砂体预测中的应用——以松辽盆地肇源地区为例[J]. 物探与化探, 2020, 44(2): 321-328.
Peng AN, Zhi-Long YU, Zhuan LIU, Yun-Hai MA, Li LI, Feng-Xuan LIU. The application of sensitive frequency seismic attributes to thin sand body prediction:Exemplified by Zhaoyuan area in Songliao Basin. Geophysical and Geochemical Exploration, 2020, 44(2): 321-328.
链接本文:  
http://www.wutanyuhuatan.com/CN/10.11720/wtyht.2020.1311      或      http://www.wutanyuhuatan.com/CN/Y2020/V44/I2/321
Fig.1  Y5井区FII1小层顶面构造
Fig.2  FII1小层水平井钻探效果分析
a—振幅属性;b—过P1井—A井连井地震剖面
Fig.3  过3口已知井连井地震剖面
Fig.4  楔状模型正演分析
a—楔状地质模型;b—楔状模型正演剖面;c—振幅与厚度关系
Fig.5  不同频谱分解算法对比地震剖面
a—原始地震剖面;b—短时傅里叶变换;c—连续小波变换;d—广义S变换
Fig.6  3口已知井基于广义S变换时频分析成果
a—A井;b—B井;c—C井
Fig.7  过3口已知井敏感频率重构地震剖面
Fig.8  敏感频率重构体与原始数据振幅属性对比
a—原始地震振幅属性;b—敏感频率数据体振幅属性
Fig.9  过P1井—A井连井敏感频率重构剖面
Fig.10  P2井区敏感频率重构体与原始数据振幅属性对比
a—原始地震振幅属性;b—敏感频率数据体振幅属性
Fig.11  P3井区敏感频率重构体与原始数据振幅属性对比
a—原始地震振幅属性;b—敏感频率数据体振幅属性
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