Exploration Geophysics Exploration Geophysics Society
Journal of the Australian Society of Exploration Geophysicists
RESEARCH ARTICLE

Fast residual static correction method using first arrivals in the 3D shot–receiver united domain

Meng Zou 1 5 Qiang Zhou 2 3 Luming Li 1 Rui Zhu 4 Kun Luo 4
+ Author Affiliations
- Author Affiliations

1 College of Geophysics, Chengdu University of Technology, Chengdu 610059, China.

2 Geophysical Company of China National Petroleum Corporation Chuanqing Drilling Engineering Company Limited, Chengdu 610213, China.

3 Mountain Geophysical Technology Test Center, China National Petroleum Corporation, Chengdu 610213, China.

4 College of Mathematics, Sichuan University, Chengdu 610065, China.

5 Corresponding author. Email: ctrl_zm@126.com

Exploration Geophysics 48(3) 246-254 https://doi.org/10.1071/EG15035
Submitted: 4 May 2015  Accepted: 13 March 2016   Published: 20 April 2016

Abstract

The result of processing the residual static correction has a profound effect on the finished quality of a reconstructed image. Static correction using wave reflection techniques cannot be guaranteed when the signal-to-noise ratio is too low or the residual static correction is larger than a half-wavelength of the refracted waves. A novel method based on first arrivals in a 3D shot–receiver united domain is presented to handle these situations. This method fits and smooths the first breaks in a robust 3D way to calculate the shot and receiver static. This method has a lower sensitivity to first arrivals than traditional methods. Applications on synthetic and real data show very high performance of the presented algorithm.

Key words: 3D, first arrivals, first break time, residual static, robust fit, united domain.


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