Statics correction methods for 3D converted-wave (PS) seismic reflection

Strong, Shaun and Hearn, Steve (2017) Statics correction methods for 3D converted-wave (PS) seismic reflection. Exploration Geophysics, 48 3: 237-245. doi:10.1071/EG15115


Author Strong, Shaun
Hearn, Steve
Title Statics correction methods for 3D converted-wave (PS) seismic reflection
Journal name Exploration Geophysics   Check publisher's open access policy
ISSN 1834-7533
0812-3985
Publication date 2017-09-01
Sub-type Article (original research)
DOI 10.1071/EG15115
Open Access Status Not yet assessed
Volume 48
Issue 3
Start page 237
End page 245
Total pages 9
Place of publication Clayton, VIC, Australia
Publisher C S I R O Publishing
Language eng
Subject 1908 Geophysics
1907 Geology
Abstract One of the most difficult steps in the PS processing sequence is estimation of the S-wave receiver statics. This process is particularly important at the coal scale, due to the need for higher frequency content (better resolution). We present an analysis of three approaches for estimating 3D PS statics. These include a surface-consistent inversion algorithm (analogous to the residual-statics method used in conventional P-wave processing), PPS refraction statics, and a so-called robust statistical method. This analysis is achieved through the use of synthetic models, and a coal-scale 3D-3C survey acquired in the Bowen Basin. The presented datasets demonstrate that the surface-consistent inversion method can become unstable in certain environments. This is likely due to parameter leakage between receiver and structural terms, caused by the highly asymmetric nature of the shallow PS reflection paths. The robust statistical method appears reliable for determination of short-wavelength receiver statics, and hence is useful for continuity enhancement. The PPS refraction approach can provide both short-wavelength and long-wavelength solutions, provided the PPS arrivals can be picked reliably. As with P-wave analysis, a combination of algorithms may provide the most effective production tool for determination of PS receiver statics.
Keyword 3D
Converted wave
PPS refraction
Statics
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
School of Earth and Environmental Sciences
 
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