Richard Bale - Profile on Academia.edu (original) (raw)
Papers by Richard Bale
High fidelity seabed data processing
SEG Technical Program Expanded Abstracts 2000, 2000
Components of 3D Converted Wave Imaging
60th EAGE Conference and Exhibition, 1998
There are now several convincing examples of improved imaging using shear-wave data from 2-D mult... more There are now several convincing examples of improved imaging using shear-wave data from 2-D multi-component surveys (e.g. Thomsen et al., 1996). The evolution from 2-D to 3-D acquisition and processing for converted wave data is rapidly occurring, due to the well known advantages of 3-D seismic images.
Parameterization of polar anisotropic moveout for converted waves
Summary We demonstrate an adaptation of the COV concept to converted-wave (PS) data, and discuss ... more Summary We demonstrate an adaptation of the COV concept to converted-wave (PS) data, and discuss applications of the COV domain in PS processing. We illustrate that one possible application is to update the Vp/Vs used for CCP binning, based upon analysis of reciprocal COVs, with equal but opposite offset vector directions.
Processing 3-C Heavy Oil Data for Shallow Shear-wave Splitting Properties
Summary We demonstrate several aspects of processing 3-C data to obtain anisotropy information fr... more Summary We demonstrate several aspects of processing 3-C data to obtain anisotropy information from shearwave splitting. This includes: analysis for unknown or uncertain field orientations of the receivers; a new method of splitting analysis which uses both radial and transverse component data to estimate the S1 direction, which is compared with a transverse only method; and some analysis of the difference between P-S1 and P-S2 imaging versus anisotropy-corrected “radial-prime” (R’) imaging.
Shear wave splitting applications for fracture analysis and improved imaging: some onshore examples
First Break, 2009
Richard Bale, Bruno Gratacos, Bruce Mattocks, Steve Roche, Kostya Poplavskii and Xinxiang Li1 exp... more Richard Bale, Bruno Gratacos, Bruce Mattocks, Steve Roche, Kostya Poplavskii and Xinxiang Li1 explain the value of shear wave splitting for reservoir characterization when using multi-component land seismic data. They illustrate the technique with data examples from the US and Canada.
Assessment and Calibration of Horizontal Geophone Fidelity in Seabed-4C Using Shear Waves
62nd EAGE Conference & Exhibition, 2000
Method of processing geophysical data
Making use of elastic wavefield extrapolators to downward continue shots and receivers through la... more Making use of elastic wavefield extrapolators to downward continue shots and receivers through layered isotropic or HTI media, we have developed a prestack shotrecord elastic migration algorithm. The imaging conditions used are briefly explained, and the migration operators illustrated by impulse responses. Application of the algorithm to modelled isotropic data demonstrates the imaging of a density anomaly in an otherwise laterally invariant medium. The resolution of the P-SV image is superior to that of the P-P, as anticipated. Moreover, the illumination characteristics of the P-SV shot migrations differ in a complementary way to those of the P-P migrations. In future we anticipate extending the algorithm to laterally heterogeneous isotropic and HTI media.
Converted wave binning analysis: In search of γ
SEG Technical Program Expanded Abstracts 1999, 1999
Elastic wave‐equation migration of HTI seismic data
SEG Technical Program Expanded Abstracts 2004, 2004
Geometrical DMO Calibration and Spatial Dealiasing
57th EAEG Meeting, 1995
Irregular acquisition geometry is inevitable due to obstacles and cable feathering in 3-D marine ... more Irregular acquisition geometry is inevitable due to obstacles and cable feathering in 3-D marine surveys and access limitations in 3-D land surveys. The irregularities will damage the fidelity of seismic images, unless they are properly handled in the processing. DMO in particular, must take account of the actual geometry. Black, Schleicher, and Zhang (1993) have developed an anaiytical calibration method that is implemented via the DMO amplitude term. In this paper we extend the DMO calibration to take into account the irregular geometry, and develop a geometrical calibration.
Several field data examples of dealiasing DMO
SEG Technical Program Expanded Abstracts 1996, 1996
A Method of and Apparatus for Processing Seismic Data
Near-surface Issues in TTI Wave Equation Migration from Topography
71st EAGE Conference and Exhibition incorporating SPE EUROPEC 2009, 2009
ABSTRACT
The ups and downs of ocean-bottom seismic processing: Applications of wawefield separation and up-down deconvolution
The Leading Edge, 2010
Analysis and stacking of 3-D converted wave data in the presence of azimuthal anisotropy
Seg Technical Program Expanded Abstracts, 1999
Robust estimation of fracture directions from 3-D converted-waves
Seg Technical Program Expanded Abstracts, 2005
Plane wave deghosting of hydrophone and geophone OBC data
Seg Technical Program Expanded Abstracts, 1999
High fidelity seabed data processing
SEG Technical Program Expanded Abstracts 2000, 2000
Components of 3D Converted Wave Imaging
60th EAGE Conference and Exhibition, 1998
There are now several convincing examples of improved imaging using shear-wave data from 2-D mult... more There are now several convincing examples of improved imaging using shear-wave data from 2-D multi-component surveys (e.g. Thomsen et al., 1996). The evolution from 2-D to 3-D acquisition and processing for converted wave data is rapidly occurring, due to the well known advantages of 3-D seismic images.
Parameterization of polar anisotropic moveout for converted waves
Summary We demonstrate an adaptation of the COV concept to converted-wave (PS) data, and discuss ... more Summary We demonstrate an adaptation of the COV concept to converted-wave (PS) data, and discuss applications of the COV domain in PS processing. We illustrate that one possible application is to update the Vp/Vs used for CCP binning, based upon analysis of reciprocal COVs, with equal but opposite offset vector directions.
Processing 3-C Heavy Oil Data for Shallow Shear-wave Splitting Properties
Summary We demonstrate several aspects of processing 3-C data to obtain anisotropy information fr... more Summary We demonstrate several aspects of processing 3-C data to obtain anisotropy information from shearwave splitting. This includes: analysis for unknown or uncertain field orientations of the receivers; a new method of splitting analysis which uses both radial and transverse component data to estimate the S1 direction, which is compared with a transverse only method; and some analysis of the difference between P-S1 and P-S2 imaging versus anisotropy-corrected “radial-prime” (R’) imaging.
Shear wave splitting applications for fracture analysis and improved imaging: some onshore examples
First Break, 2009
Richard Bale, Bruno Gratacos, Bruce Mattocks, Steve Roche, Kostya Poplavskii and Xinxiang Li1 exp... more Richard Bale, Bruno Gratacos, Bruce Mattocks, Steve Roche, Kostya Poplavskii and Xinxiang Li1 explain the value of shear wave splitting for reservoir characterization when using multi-component land seismic data. They illustrate the technique with data examples from the US and Canada.
Assessment and Calibration of Horizontal Geophone Fidelity in Seabed-4C Using Shear Waves
62nd EAGE Conference & Exhibition, 2000
Method of processing geophysical data
Making use of elastic wavefield extrapolators to downward continue shots and receivers through la... more Making use of elastic wavefield extrapolators to downward continue shots and receivers through layered isotropic or HTI media, we have developed a prestack shotrecord elastic migration algorithm. The imaging conditions used are briefly explained, and the migration operators illustrated by impulse responses. Application of the algorithm to modelled isotropic data demonstrates the imaging of a density anomaly in an otherwise laterally invariant medium. The resolution of the P-SV image is superior to that of the P-P, as anticipated. Moreover, the illumination characteristics of the P-SV shot migrations differ in a complementary way to those of the P-P migrations. In future we anticipate extending the algorithm to laterally heterogeneous isotropic and HTI media.
Converted wave binning analysis: In search of γ
SEG Technical Program Expanded Abstracts 1999, 1999
Elastic wave‐equation migration of HTI seismic data
SEG Technical Program Expanded Abstracts 2004, 2004
Geometrical DMO Calibration and Spatial Dealiasing
57th EAEG Meeting, 1995
Irregular acquisition geometry is inevitable due to obstacles and cable feathering in 3-D marine ... more Irregular acquisition geometry is inevitable due to obstacles and cable feathering in 3-D marine surveys and access limitations in 3-D land surveys. The irregularities will damage the fidelity of seismic images, unless they are properly handled in the processing. DMO in particular, must take account of the actual geometry. Black, Schleicher, and Zhang (1993) have developed an anaiytical calibration method that is implemented via the DMO amplitude term. In this paper we extend the DMO calibration to take into account the irregular geometry, and develop a geometrical calibration.
Several field data examples of dealiasing DMO
SEG Technical Program Expanded Abstracts 1996, 1996
A Method of and Apparatus for Processing Seismic Data
Near-surface Issues in TTI Wave Equation Migration from Topography
71st EAGE Conference and Exhibition incorporating SPE EUROPEC 2009, 2009
ABSTRACT
The ups and downs of ocean-bottom seismic processing: Applications of wawefield separation and up-down deconvolution
The Leading Edge, 2010
Analysis and stacking of 3-D converted wave data in the presence of azimuthal anisotropy
Seg Technical Program Expanded Abstracts, 1999
Robust estimation of fracture directions from 3-D converted-waves
Seg Technical Program Expanded Abstracts, 2005
Plane wave deghosting of hydrophone and geophone OBC data
Seg Technical Program Expanded Abstracts, 1999