Recovery of a target reflection underneath coal seams
File(s)
Published version
Author(s)
Guo, J
Wang, YH
Type
Journal Article
Abstract
This paper presents a strategy to recover a target seismic reflection of a potential gas reservoir immediately underneath a group of coal seams. First, a random noise attenuation technique, which is amplitude preserving, is applied to a stack section with usual low signal-to-noise ratio. Then, a stabilized inverse Q filtering technique is applied to correct for both phase and amplitude effects simultaneously. The latter can recover all the high-frequency components that are in principle recoverable and intelligently limit the attempt to compensate a given high-frequency wave component when its amplitude is attenuated to a level below the ambient noise level. As a consequence, the seismic bandwidth is increased and thereby the vertical resolution is enhanced so that the weak reflection of the target gas layer underneath the strong coal-seam reflections is clearly presented.
Date Issued
2004-03-01
Date Acceptance
2003-11-10
Citation
Journal of Geophysics and Engineering, 2004, 1 (1), pp.46-50
ISSN
1742-2132
Publisher
Oxford University Press (OUP)
Start Page
46
End Page
50
Journal / Book Title
Journal of Geophysics and Engineering
Volume
1
Issue
1
Copyright Statement
© 2004 Nanjing Institute of Geophysical Prospecting
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000228218000006&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Science & Technology
Physical Sciences
Geochemistry & Geophysics
random noise attenuation
inverse Q filtering
seismic resolution
gas reservoir
coal seams
Publication Status
Published
Article Number
PII S1742-2132(04)73757-7
Date Publish Online
2004-02-11