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The AAPG/Datapages Combined Publications Database
Showing 17,696 Results. Searched 200,357 documents.
Recent Advances and Experiences in Subsalt Seismic Imaging
Search and Discovery.com
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Azimuthal Variations in Reflection Seismic Data: Measurements Governed by the In-Situ Horizontal Stress Field and/or Vertical Aligned Fractures
Heloise B. Lynn, Walter S. Lynn
West Texas Geological Society
...; so the mean (or common to all azimuths) velocity is 11,750 ft/sec. The magnitude of this variation can be termed: (500/12,000) 4.16%, or (250/11,750...
2006
S-transform based processing of noisy surface wave record for recovering high-resolution spectrum
Sayan Mukherjee, Mrinal Bhaumik, Tarun Naskar
International Meeting for Applied Geoscience and Energy (IMAGE)
... analysis of the surface waves (MASW) method to accurately predict near-surface shear wave velocity profiles. In field acquisitions, a common problem...
2022
Abstract: AVO Crossplotting I: Processing and Calibration Considerations; #90171 (2013)
Heath Pelletier
Search and Discovery.com
... to the difficulty inherent in preconditioning gathers for AVO analysis. In this paper I will review the theoretical expectations regarding AVO crossplot...
2013
Time-Lapse WAW VSP Imaging of an Unconventional Reservoir Using DAS Fiber Optics
J. Andres Chavarria, Dan Kahn, David Langton, Steve Cole, Xinyang Li
Unconventional Resources Technology Conference (URTEC)
... changes due to fracturing (Byerley et al, 2018, Binder et al., 2018, Hull et al. 2019) using different analysis techniques. Of particular interest...
2019
Visco-Acoustic Full-Waveform Inversion: A Case Study to Resolve High-Resolution Shallow Channel Absorption, Offshore Indonesia
Jun Wang, Yonghe Guo, Putri Supriandini, Kelik Moersidin, Rahmad Hidayat
Indonesian Petroleum Association
... velocity model building, while Q estimation for shallow channels is still a challenge. Ray-based Q tomography, using frequency-dependent amplitude decay...
2022
Elastic FWI for joint Vp, Vs and density inversion
Peng Shen, Uwe Albertin, Hermes Malcotti, Josh Haataja
International Meeting for Applied Geoscience and Energy (IMAGE)
... analysis derived from migrated image gathers which often relies on such constraints to obtain an accurate inversion. Inverted acoustic impedance...
2024
Hybrid streamer/sparse OBN imaging offshore Norway
Chris Walker, Zhengzheng Zhou, Xi Li
International Meeting for Applied Geoscience and Energy (IMAGE)
... data to be used for imaging, whilst the OBN data were to be used only to obtain velocity information using Full Waveform Inversion (FWI.) Parallel...
2023
Imaging of multiwell and multifiber walkaway DAS-VSP datasets in a CCUS demonstration project onshore Japan
Yuji Yamada, Shotaro Nakayama, Takuji Mouri, Manish Lal Khaitan, Philip Armstrong, Olga Podgornova
International Meeting for Applied Geoscience and Energy (IMAGE)
... was piecewise linear (Figure 1). A 43 second linear 6-80Hz sweep was applied using four vibrator units at each source point. Approximately 280 vibrator points...
2024
Converted Waves Seismic Imaging : Importance of Gamma Estimation (Paper P4)
A. G. Mohd Adnan, A. R. Ghazali
Geological Society of Malaysia (GSM)
... migrate the data using Kirchhoff pre-stack time migration and check the degree of flatness of the common image gathers (CIG) after pre-stack time...
2012
A Nigerian Renaissance: Renewed interest in Africa's largest oil producer
John Balch, Matt Lamont, Polarcus, DownUnder GeoSolutions
GEO ExPro Magazine
... NG03 3D dataset has been reprocessed by DownUnder GeoSolutions from field tapes through to Kirchhoff depth migration, using high-resolution reflection...
2014
Abstract: Correlation of P-P and P-S Data in Yinggehai Basin, South China Sea; #90171 (2013)
Jinfeng Ma, Le Gao, and Igor Morozov
Search and Discovery.com
... to calibrate the P-S seismic section, we estimated the initial P-S average velocity by using the β/α ratio obtained from the CCP velocity analysis...
2013
3-D AVO Analysis and Modeling Applied to Fracture Detection in Coalbed Methane Reservoirs
Antonio C.B. Ramos, T.L. Davis
Rocky Mountain Association of Geologists
... better offset and azimuth distribution than single C M P gathers, which contributes for improved velocity and amplitude analysis. After two passes...
1997
Risk Reduction on the Ivory Prospect via Geologically Constrained Non-Parametric Inversion and Bayesian Uncertainty Estimation on a Fault-Bounded Reservoir, #11039 (2018).
James Raffle, Thomas Earnshaw, Stuart Greenwood, Jeet Singh, Juergen Fruehn, Claudia Hagen, Ian F. Jones, Rodrigo Felicio, Zhijiang Luo, Doug Sassen, Svein Idar Forsund, Mark Ackers, Lars Aamodt
Search and Discovery.com
... and deghosting technology. From this final migrated volume, structural uncertainty was then estimated using a Bayesian statistical analysis of the tomographic...
2018
Abstract: Near-surface S-wave Velocity from an up Hole Survey using Explosive Sources; #90187 (2014)
Saul E. Guevara, Gary F. Margrave, and William M. Agudelo
Search and Discovery.com
...Abstract: Near-surface S-wave Velocity from an up Hole Survey using Explosive Sources; #90187 (2014) Saul E. Guevara, Gary F. Margrave, and William M...
2014
Seismic diffraction imaging for improved coal structure detection in complex geological environments
Binzhong Zhou, Weijia Sun
Petroleum Exploration Society of Australia (PESA)
..., Barcelona, Spain, 14 - 17 June 2010. Landa, E., and S. Fomel, 2008, Separation, imaging, and velocity analysis of seismic diffractions using migrated...
2018
Seismic Guided Drilling (SGD*): A New Technology for Look-Around and Look-Ahead of the Bit Prediction During Drilling
Nader C. Dutta, Sherman Yang, Jianchun Dai, Aranya Bhaduri, S. Chandrasekhar, Firoze Dotiwala, C.V. Rao
Indonesian Petroleum Association
... velocity, an essential ingredient for Migration to produce an Image, is based on the “flattening of seismic gathers” criterion. While this criterion...
2012
Integration of geology, rock physics, logs, and prestack seismic data for reservoir porosity estimation
Abdulaziz M. AlMuhaidib, Mrinal K. Sen, M. Nafi Toksoz
AAPG Bulletin
.... Strauss, and P. R. Levitt, 1994, Detection of gas in sandstone reservoirs using AVO analysis: A 3-D seismic case history using the Geostack technique...
2012
Measuring seasonal velocity variations on an urban DAS array
Jihyun Yang, Jeffrey Shragge
International Meeting for Applied Geoscience and Energy (IMAGE)
... located before this point. Furthermore, to make the ambient signals usable for interferometric analysis, we first transform the DAS velocity data, v...
2022
3D-9C seismic survey for direct S-wave processing and interpretation
Rui Zhang, Zhiwen Deng, Yuanyuan Yue, Yan Wang
International Meeting for Applied Geoscience and Energy (IMAGE)
... data than any converted P-S data. Most Pwave seismic data processing techniques were used here, such as NMO and velocity analysis, etc., which...
2022
Abstract: LSPSM for Pre-and Poststack Time Lapse Studies; #90187 (2014)
Abdolnaser Yousefzadeh and John C. Bancroft
Search and Discovery.com
... for elastic parameters to track the thermal front of an in situ combustion project. Ignoring the effect of other differences, a key point in comparing two...
2014
Abstract: Prestack Signal Enhancement by Non-hyperbolic MultiFocusing; #90187 (2014)
Evgeny Landa, Alex Berkovitch, and Kostya Deev
Search and Discovery.com
... of the enhanced gathers for the true velocity model. Figure 4a shows the PSDM result using the original gathers. Figure 4b is a depth section obtained from...
2014
Abstract: Trace Interpolation and Elevation Statics by Conjugate Gradients; #90172 (2014)
Marcus Wilson, Robert J. Ferguson
Search and Discovery.com
... is computed using an assumed velocity model and the wavefield at depth is derived using weighted damped least squares. This method is used to correct common...
2014
Processing the KTK 3D seismic Survey for Azimuthal Information: San Joaquin Basin, California; #41649 (2015)
M. Lee Bell and Gary Myers
Search and Discovery.com
..., surface-consistent amplitude scaling, and two iterations of velocity analysis and reflection statics. After this pre-stack migration velocity analysis...
2015
Abstracts: Seismic Anisotropy of the Marcellus Shale: Feasibility Study for Fracture Characterization; #90173 (2015)
James Gaiser, Alvaro Chaveste, Mary Edrich, Tony Rebec, and Richard Verm
Search and Discovery.com
... can be determined from common-receiver gather (CRG) stacks or prestack time migration (PSTM) image gathers of offset-vector tile (OVT) data. Vertical...
2015