徐嘉亮^1,,
张冰^1,,,
王维红¹,
石颖¹,
包培楠¹,
谢俊法²
1. 东北石油大学地球科学学院, 大庆 163318
2. 中国石油天然气股份有限公司勘探开发研究院西北分院, 兰州 730070

基金项目: 国家自然科学基金(41930413，41804133，42004094，42004095)，中国石油科技创新基金(227190002)东北石油大学培育基金(15071120510)和黑龙江省油气藏形成机理与资源评价重点实验室基金(11024300418)联合资助


详细信息

作者简介: 徐嘉亮, 男, 1985年生, 博士, 讲师, 主要从事偏移成像、速度建模和构造及属性反演研究.E-mail: 84829525@qq.com

通讯作者: 张冰, 女, 1989年生, 博士, 讲师, 主要从事储层预测和压力预测研究.E-mail: aaayin0909@126.com

中图分类号: P631

收稿日期:2020-12-09
修回日期:2021-05-24
上线日期:2021-07-10

Free-surface multiple wave suppression method based on AVO forward simulation

XU JiaLiang^1,,
ZHANG Bing^1,,,
WANG WeiHong¹,
SHI Ying¹,
BAO PeiNan¹,
XIE JunFa²
1. School of Earth Sciences, Northeast Petroleum University, Daqing 163318, China
2. Northwest Branch of Exploration and Development Research Institute of CNPC, Lanzhou 730070, China


More Information

Corresponding author: ZHANG Bing,E-mail:aaayin0909@126.com

MSC: P631

--> Received Date: 09 December 2020
Revised Date: 24 May 2021
Available Online: 10 July 2021


摘要
摘要:针对SRME和Radon变换压制自由表面多次波的近道多次波残留和伤害有效波等问题，主要采用基于AVO属性分析的多次波剔除法对近道多次波进行压制，该方法在迭代更新过程中，受近道多次波影响容易出现更新误差，同时迭代更新降低计算效率.本文对基于AVO属性分析的多次波剔除法进行改进，利用中远道地震数据进行约束，通过AVO正演模拟构建有效波的AVO属性抛物线，进而对近道多次波进行压制.该方法在构建有效波AVO属性抛物线过程中，无需迭代更新，提高了计算效率.同时该方法在多次波压制过程中不受多次波的影响.由模型测试及实际地震资料应用效果证明，本文方法能够较好的压制自由表面多次波，该方法为油气田进一步精细勘探开发提供可靠保障.
关键词: 自由表面多次波/
正演模拟/
近道多次波/
AVO

Abstract:This work focuses on suppressing the near-gather multiple wave residuals and damaged effective waves of free-surface multiple waves by SRME and Radon transform. In previous work, the near-gather multiple waves are suppressed by multiple wave tick division based on Amplitude Variation with Offset (AVO) attribute analysis. During the iterative updating process of this method, the update error tends to appear due to the effect of near-gather multiple waves, and the iterative updating reduces the calculation efficiency. This paper improves the multiple wave tick division based on AVO attribute analysis. We use the middle- and far-gather seismic data to constrain, and construct the AVO attribute parabola of the effective waves by AVO forward simulation; then suppress the near gather multiple waves. During the process of constructing effective wave AVO attribute parabola, this method does not need iterative updating, and improves the calculation efficiency. At the same time, the method is not affected by the false appearance of multiple waves in the near gather, and the effect of multiple wave suppression is improved. Tests on models and real seismic data prove that this method can suppress multiple waves of free-surface better, and provides a reliable guarantee for further fine exploration and development of oil and gas fields.
Key words:Multiple waves on free surface/
Forward Simulation/
Near-gather multiple waves/
Amplitude Variation with Offset (AVO)



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