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The AAPG/Datapages Combined Publications Database
Showing 20,627 Results. Searched 200,673 documents.
Discussing Demigration Uncertainties Applied to Active Focused Seismic Monitoring
Baptiste Penot, Bruce Webb, Michele Buia, Gianluca Dell’Elce
Carbon Capture, Utilization and Storage (CCUS)
... the process is highly non-linear (Cerveny, 2000) and uses local model values. Therefore, changing a velocity model or a horizon depth is expected...
2025
Comprehensive pressure core analysis for hydrate-bearing sediments from Gulf of Mexico Green Canyon Block 955, including assessments of geomechanical viscous behavior and nuclear magnetic resonance permeability
Jun Yoneda, Yusuke Jin, Michihiro Muraoka, Motoi Oshima, Kiyofumi Suzuki, William F. Waite, and Peter B. Flemings
AAPG Bulletin
... velocity, density, and gamma ray acquired by LWD indicated numerous concentrated gas hydrate–bearing layers existed in a reservoir between 414 and 450 m...
2022
Abstracts: True-Amplitude PS Prestack Time Migration via 5D Interpolation; #90173 (2015)
Peter W. Cary, Albert Zhang
Search and Discovery.com
... the velocity variations are more substantial, prestack depth migration would be more desirable ( Kristiansen et al., 2003, Miao et al., 2005). S-waves...
2015
Using x-ray computed tomography to estimate hydrate saturation in sediment cores from Green Canyon 955, northern Gulf of Mexico
Emma A. Oti, Ann E. Cook, Stephen C. Phillips, and Melanie E. Holland
AAPG Bulletin
... are highlighted in yellow. (B) The x-ray computed tomography (XCT) values, (C) gamma-ray density, and (D) compressional (P-wave) velocity along with (E...
2022
Shale Gas OVT Seismic Data Prestack Trace-Gather Optimization Technique
Yusheng Zhang, Gang Yu, Xing Liang, Benjing Liu, Guangming Hu
Unconventional Resources Technology Conference (URTEC)
... makes the equation diffuse along the direction of reflections and terminate at the edge, then the information of continuous events is extracted. Linear...
2015
Spherical Wave Model Tests of VSP-Based Q-Estimation Techniques
Search and Discovery.com
... disappears with increasing depth. Figure 2 shows log magnitude spectra as generated with Equation (1) for depths from 15m to 61m. The zero-phase (non-causal...
2013
2D Pre-Stack Depth Migration : Application to Inverted Grabens
C. Bunks, P. L. Pichon, L. Ben Brahim, Sekar Sakti
Indonesian Petroleum Association
... an in house 2D pre-stack depth migration and velocity analysis program called MIGPACK. MIGPACK performs finite-difference migration in the source geophone...
1993
Insight on the uplift the Wave-Equation Based AVO technology may have on unconventional reservoirs: A case study on the Vaca Muerta Formation, Neuquén Basin, Argentina.
David Curia, Ezequiel Valeff, Francisco Ghersi, Hansel Gonzalez, Pablo Benitez
Unconventional Resources Technology Conference (URTEC)
... of depth layers in 1.5D. Leveraging the intrinsic non-linearity of the wave equation, a spatially broader elastic property model is derived...
2025
Subsalt pressure prediction in the Miocene Mad Dog field, Gulf of Mexico
Michael P. Merrell, Peter B. Flemings, Glenn L. Bowers
AAPG Bulletin
... and the deeper section.Figure 4. Pressure versus depth plot of the discovery well 826-1. The wireline gamma-ray, resistivity, and sonic logs (A, B, and C) and (E...
2014
A Multilog-Evaluation Package Using Linear Programming Techniques to Evaluate Porosity and Lithology in Hydrocarbon Bearing Complex Lithologies
P. J. D. van Ditzhuijzen, D. Masson
Southeast Asia Petroleum Exploration Society (SEAPEX)
... the material balance equation as shown in equation 2 above. If for instance the gamma ray log is used as a shale indicator a fifth equation can be added...
1984
Thinking in Depth
Jim Durrant
Petroleum Exploration Society of Australia (PESA)
... a nd affordabl e by all exp lo ration companies. Time and depth migration schemes differ in the ir treatment of lateral velocity variations. generall...
1995
Effects of near Surface Lithology on Velocity Modelling and TimeDepth Relationships in the CooperEromangaLake Eyre Basin
Anna Manka, Glen Buick, Rob Menpes, Luke Gardiner, Cameron Jones, Khalid Amrouch
Australian Petroleum Production & Exploration Association (APPEA) Journal
... ray logs through casing is recommended as a means to improve depth prediction through tying statics corrections and velocity models to observed...
2018
Design of Land 3-D Surveys, by Mike Galbraith, #40139 (2004).
Search and Discovery.com
2004
An Overview of Ray Trace Modeling with an Example from the Wichita Mountain Front in Southern Oklahoma
Jan Dodson, Roger A. Young, Kevin Smart
Oklahoma City Geological Society
... Oklahoma was used. The ray trace model was designed to replicate post-stack seismic data. VELOCITY-DEPTH MODEL Three intermediate steps were necessary...
2001
Identification of Source Rocks on Wireline Logs by Density/Resistivity and Sonic Transit Time/Resistivity Crossplots
B. L. Meyer , M. H. Nederlof
AAPG Bulletin
... "pseudoregression" equation is then the discriminant function, where Y is replaced by D. This analysis results in a linear equation for the discriminant score D...
1984
New perturbation-based traveltime approximation for elastic VTI media
Shibo Xu, Alexey Stovas, Xingguo Huang
International Meeting for Applied Geoscience and Energy (IMAGE)
... axis (VTI). The perturbation coefficients in this approximation are derived directly from the implicit parametric offset-traveltime equation...
2022
Abstract: Azimuthal Processing For Unconventional Resource Plays Using An Orthorhombic Velocity Model; #90174 (2014)
Shaowu Wang and David Wilkinson
Search and Discovery.com
...Abstract: Azimuthal Processing For Unconventional Resource Plays Using An Orthorhombic Velocity Model; #90174 (2014) Shaowu Wang and David Wilkinson...
2014
A Coupled Petrophysical-Geophysical Model Demonstrates Velocity Dispersion in a Thin-bedded, Fluvial Reservoir; #40913 (2012)
Richard C. Odom
Search and Discovery.com
... on linear statistical models and do not account for dispersion. 4. An improved time-depth chart is published for this section of the survey based on a linear...
2012
A New Approach to Seismic Interpretation in Challenging Imaging Environments, by C. Edward Helsing and David C. Berman; #90052 (2006)
Search and Discovery.com
2006
Iterative Modeling and Imaging of Seismic Data in Depth to Help Delineate Petroleum Reservoirs in the Utah Overthrust Belt
Alvin K. Benson
Utah Geological Association
... directions, seismic data must be imaged in depth. Subsurface velocity models necessary to form these accurate pictures can be obtained from the data through...
1991
Lithologically Controlled Pore Pressure Prediction and Geomechanical Modeling Using Probabilistic Multivariate Clustering Analysis and an Expert System
Alan A. Curtis, Eric Eslinger, Randy Nickerson, Siva Nookala, Francis Boyle
Unconventional Resources Technology Conference (URTEC)
...) equation (Equation 3): Seff = {(Vint – Vo)/A} 1/B where: (3) Seff = Effective stress at depth z Vint = Interval velocity at depth z Vo = Minimum...
2019
Practical considerations for computing the kernels of reflection-based full-waveform inversion
Houzhu (James) Zhang, Hong Liang, Hongwei Liu
International Meeting for Applied Geoscience and Energy (IMAGE)
...) are not added and the transmission term in equation (1) does not contain the strong velocity variations at depth of 1 km (Figure 1). Finally...
2022
Flow Simulation of Complex Fracture Systems With Unstructured Grids Using the Fast Marching Method
Changdong Yang, Xu Xue, Michael J. King, Akhil Datta-Gupta
Unconventional Resources Technology Conference (URTEC)
... the drainage volume during the transient pressure propagation process using the Fast Marching Method (FMM) and then rapidly solves fluid flow equation...
2017
Acquisition and Ananlysis of Wide-Angle Reflection and Refraction Seismic Data
Paul L. Stoffa
Circum Pacific Council Publications
... seismic coverage with expanded partial apertures is obtained along the seismic line. These seismic data will result in improved velocity-depth...
1989
Mantle Creep: Elasticoviscous Versus Modified Lomnitz Law, and Problems of "The New Global Tectonics"
Paul S. Wesson
AAPG Bulletin
... of seismic velocity with depth (z) must obey EQUATION (41) For a low-velocity layer, by definition, (dv/dz) < 0, which by equation 41 gives...
1972