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The AAPG/Datapages Combined Publications Database
Showing 155 Results. Searched 200,663 documents.
Seismic Modeling
Abilene Geological Society
... is a technique which traces the raypath the sound travels going from the shot to the receiver. Wherever there are changes in velocity in the subsurface...
1993
Induced Seismicity Near Fox Creek, Alberta: Interpretation of Source Mechanisms
Hongliang Zhang, David W. Eaton
Unconventional Resources Technology Conference (URTEC)
..., for a 1-D layered velocity model, represents the average density, while r and denote the distance and average P-wave velocity along the raypath...
2018
Fit For Purpose Integrated Structural Identification Using Azimuthal Monopole Sonic Waveforms and Vertical Seismic Profiling: The First Case Study From The Vertical Unconventional Well in North Sumatera Basin - Indonesia
Erfandi Adhiansyah, Annisa Nur Mahdiya, Murthala Hatta, Irma Eliza, Barry Albert Lumankun
Indonesian Petroleum Association
... of the source offset. The process for producing the image involved building a velocity model. The velocity was derived from the time-depth relationship...
2022
Mitigation of the 3D Cross-Line Acquisition Footprint Using Separated Wavefield Imaging of Dual-Sensor Streamer Seismic Data A First Example from Malaysia
Mazin Farouki, Andrew Long, Richard Jones, Yee Ah Chim, Magdalene Tang, Hui LeGleut, Shaoping Lu, Dan Whitmore, Adam Betteridge
Indonesian Petroleum Association
... of lateral variability in the velocity model, full anisotropy can be accounted for, and angle gathers can be created to assist with velocity model...
2013
AVO Modeling of Monochromatic Spherical Waves: Comparison to Band-Limited Waves; #41567 (2015)
Charles Ursenbach, Arnim Haase
Search and Discovery.com
... path in the complex plane, S0 ≡α / (Dω0), α is the P-wave velocity of the overburden, D is the length of the raypath from source to receiver, ω0...
2015
Abstract: The Effects of Optimal Positioning of Multiple Borehole Microseismic Arrays for Monitoring Hydraulic Fracture Treatments; #90174 (2014)
Jason Hendrick, Eric von Lunen, and Sheri Bowman
Search and Discovery.com
... velocity model of the near wellbore geology. Acknowledgements Thanks to ESG for their technical work and contribution to our project. . Figure 1: Raypath...
2014
3-D Seismic Survey Design as a Foundation for Optimizing Unconventional Play Success
Walt Ritchie
Unconventional Resources Technology Conference (URTEC)
... of the formation, and bandwidth to resolve the formation at the target depth. The latter element is a requirement imposed by the opportunity to extract...
2013
Model-Based, 2-D Seismic Definition of Subthrust Structure in the Uranium Peak Area, Northwest Colorado
George C. Robertson, Dirk W. McDermott, Rex L. Tang
Rocky Mountain Association of Geologists
.... Cross-section A-A’ was used as the geological model for predrilling velocity model and prestack depth migrations. Key wells are shown, along...
1995
Land 3D Acquisition Techniques Related to S.E. Asian Situation
Walter Ritchie
Indonesian Petroleum Association
... direction. All traces within a 2D line of profile have a common raypath plane azimuth and a common velocity can be applied to each trace within each CDP...
1981
Traveltime Computations for Locating the Source of Micro Seismic Events and for Forming Gridded Traveltime Maps
John C. Bancroft
Search and Discovery.com
... a spherical wavefront. The raypath and gridded traveltime estimations assume that the local velocity in the area defined by the defined times is constant...
Unknown
Traveltime Computations for Locating the Source of Micro Seismic Events and for Forming Gridded Traveltime Maps
John C. Bancroft
Search and Discovery.com
... a spherical wavefront. The raypath and gridded traveltime estimations assume that the local velocity in the area defined by the defined times is constant...
Unknown
Geologic Framework of Lower Cook Inlet, Alaska
Michael A. Fisher, Leslie B. Magoon
AAPG Bulletin
... Velocity information was obtained from the stacking of common-depth-point (CDP) seismic records and from sonic logs from wells on the Kenai lowland...
1978
Super-virtual interferometry for noise elimination on vertical seismic profiling (VSP)
Yicheng Zhou, Yang Cui, Sherif Hanafy
International Meeting for Applied Geoscience and Energy (IMAGE)
... it difficult to pick traveltime information, which is used as the input for traveltime tomography to build subsurface velocity models. For this reason...
2024
2.2 Basement Involved: 2.2.1 Crustal Profiles: COCORP Seismic Traverse Across the Rio Grande Rift
L. D. Brown, S. Kaufman, and J. E. Oliver
AAPG Special Volumes
... near the depth at which refraction surveys suggest an increase in seismic velocity (Figure 2). MOHO REFLECTIONS The excellent seismic penetration...
1983
A Comparison of Prestack Depth and Prestack Time Imaging of the Paktoa Complex, Canadian Beaufort MacKenzie Basin
G. R. Elsley, H. Tieman
AAPG Special Volumes
...A Comparison of Prestack Depth and Prestack Time Imaging of the Paktoa Complex, Canadian Beaufort MacKenzie Basin G. R. Elsley, H. Tieman 2010 79 90...
2010
Broadband Data from Flat Streamers: Considerations for Acquisition and Processing
Phil Fontona, Edward Hager
Indonesian Petroleum Association
... on the receiver-side ghost, and commonly used are co-located velocity and pressure sensors and dual-depth or variable depth hydrophones. All these methods...
2015
Least Square Q-Kirchhoff Migration: Implementation and Application
Xiaodong Wu, Yi Xie, Joe Zhou, Dechun Lin, Yu Wang
Petroleum Exploration Society of Australia (PESA)
.... Xie et al. (2009) proposed Q pre-stack depth migration (QPSDM) which compensates for absorption during migration by fully honouring ray paths, however...
2018
Seismic Imaging at Conger: Lessons Learned in Gulf of Mexico Subsalt Imaging
Thomas C. Bergeon, Brad A. Robison
GCAGS Transactions
... of time and depth data. Seismic salt velocity "pull-up" corrected on pre-stack depth data. Seismic Positioning and Well Ties — Lateral Positioning...
2006
Stratigraphic and Structural Interpretations Using Diffraction Seismograms
Richard K. Snavely , A.K.M. Sarwar
GCAGS Transactions
...). The model extends from the surface to a depth of 8000 ft and includes twenty horizons. The velocity values above the first horizon are based on only one...
1988
Vertical Seismic Profiling at Eldfisk Field, Bob Hardage, #40389 (2009).
Search and Discovery.com
2009
GeoConvention 2014; - Abstracts, #90224 (2015).
Search and Discovery.com
2015
Seismic Detection of Gas in Cretaceous Sandstones and Fractured Sandstones
Walter E. Johnson, William T. Brown Jr., James B. Peterson
Rocky Mountain Association of Geologists
... to be recorded; 3) A better understanding of petrophysics allows the practitioner to more accurately predict the acoustic velocity of a sandstone under...
1995
Vertical Seismic Profiling--A Measurement that Transfers Geology to Geophysics: Chapter 2
B. A. Hardage
AAPG Special Volumes
..., the objectives of vertical seismic profiling are different from those of velocity surveying, specifically: 1. VSP data are recorded at vertically spaced depth...
1985
Seismic Reflection Imaging with Active Sources and Microseismic Events Recorded on Horizontal DAS Cables
David Langton, Dan Kahn, Brian Fuller
Unconventional Resources Technology Conference (URTEC)
... Kirchhoff migration type of an approach in which the velocity field for the downgoing part of the raypath would be determined by travel time...
2019