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The AAPG/Datapages Combined Publications Database
Showing 5,807 Results. Searched 195,387 documents.
Finite Difference Modelling: Part IV
Lasse Amundsen, Ørjan Pedersen, Martin Landrø
GEO ExPro Magazine
... modelling, of which geometric ray modelling and FD modelling are ‘end members’. Ray theory is based on the fact that wave energy in the form of rays...
2019
Diffraction and Refraction on Reflection Seismograph Records as Aids to Fault Interpretation
Miller Quarles, Jr.
GCAGS Transactions
... OF DIFFRACTION THEORY A brief explanation of the effects of diffraction can be made with a wave front diagram. Figure 1 (left) shows returning wave...
1956
II. Information Content and Resolution Potential of Seismic Data.
Norman S. Neidell
AAPG Special Volumes
... requires that we first adopt a wave theory viewpoint toward the propagation of a seismic disturbance. Let us first resolve a paradox which appears...
1979
The Limitations of Seismic Modelling of Geological Structures
B. L. N. Kennett
Petroleum Exploration Society of Australia (PESA)
.... As a result we are working in a frequency range which is rather poorly served by current mathematical techniques for modelling wave propagation...
1985
High Resolution Diffraction Imaging of Small Scale Fractures in Shale and Carbonate Reservoirs
Alexander M. Popovici, Ioan Sturzu, Tijmen J. Moser
Unconventional Resources Technology Conference (URTEC)
... of the wave propagation directions. An important point to note is that a true diffraction image is not optimally obtained by post-processing...
2015
Forward Modeling of Seismic Data: Part 7. Geophysical Methods
George Mellman, Paul A. Kunzinger
AAPG Special Volumes
..., again with approximations, but with significant time savings. There are two classes of seismic modeling: ray tracing and wave equation methods...
1992
Seismic Modelling in 3D for Migration Testing
Search and Discovery.com
... function. Thus we explicitly decouple the reflectivity from the velocity of wave propagation, essentially invoking the first-order Born assumption...
2013
Fracture Detection Through MultiFocusing Diffraction Imaging, Case Studies
Marianne Rauch-Davies, Danil Pelman, Kostya Deev
Unconventional Resources Technology Conference (URTEC)
... of MultiFocusing diffraction imaging. Figure 1: MultiFocusing ray diagram for diffracted wave extraction The practical implementation of diffraction stacking...
2014
Using Multi-Focusing 3-D Diffraction Imaging to Predict Fracture Swarms in Unconventional Reservoirs
Marianne Rauch-Davies, Alex Berkovitch, Kostya Deev
Unconventional Resources Technology Conference (URTEC)
... of the diffracted events and attenuation of the specular reflections allows creating an image that contains mostly diffraction energy. We briefly describe the theory...
2013
Unconventional Reservoir Characterization Using Azimuthal Seismic Diffraction Imaging
Dmitrii Merzlikin, Sergey Fomel, Xinming Wu, Mason Phillips
Unconventional Resources Technology Conference (URTEC)
... of any part of this paper without the written consent of URTeC is prohibited. Summary We propose azimuthal plane-wave destruction seismic diffraction...
2017
Stratigraphic and Structural Interpretations Using Diffraction Seismograms
Richard K. Snavely , A.K.M. Sarwar
GCAGS Transactions
... phenomena of wave propagation in the context of the wave equation. His solution explains the phase and obliquity problems encountered in Huygens' principle...
1988
Application of finite difference eikonal solver for traveltime computation in forward modeling and migration
Amir Mustaqim Majdi, Seyed Yaser Moussavi Alashloo, Nik Nur Anis Amalina Nik Mohd Hassan, Abdul Rahim Md Arshad, Abdul Halim Abdul Latiff
Geological Society of Malaysia (GSM)
... for complex subsurface. Instead of calculating wave propagation locally as in ray tracing, finite difference offers to solve the eikonal equation over...
2021
The Developing Role of Analysis in the Design of Floating Production Systems
D. B. Melver, D. Cash
Indonesian Petroleum Association
... 3777. Mac Camy, R.C. and Fuchs, R.A., 1954, Wave forces on piles - a diffraction theory: Technical Memorandum 69, Beach Erosion Board, U.S. Army Corps...
1985
Abstract: Using-MultiFocusing 3D Diffraction Imaging to Predict Fracture Corridors/swarms in the Bazhenov Formation; #90187 (2014)
Marianne Rauch-Davies, Alex Berkovitch, Danil Pelman, and Kostya Deev
Search and Discovery.com
... 0 (X ) 2 Rcre VO (6) Figure 1: MultiFocusing ray diagram for diffracted wave detection. As it follows from equation (6), diffraction...
2014
An Explanation of the Logarithmic Spiral Plan Shape of Headland-Bay Beaches
Paul H. Leblond
Journal of Sedimentary Research (SEPM)
... of such beaches. Basic ideas on longshore currents and wave refraction and diffraction are cast into simple analytical expressions and combined with an empirical...
1979
Abstracts: Application of CSP Gather Modeling for Determination of Velocity Smoothing Operator for Prestack Kirchhoff Depth Migration; #90173 (2015)
Hassan Khaniani and John C. Bancroft
Search and Discovery.com
... structures, prediction of diffraction traveltime curves is a challenging problem that can be approximated by ray tracing methods. One of the concerns...
2015
Seismic diffraction imaging for improved coal structure detection in complex geological environments
Binzhong Zhou, Weijia Sun
Petroleum Exploration Society of Australia (PESA)
.... According to seismic wave theory, in addition to reflections commonly used in seismic surveying for structural delineation, there are diffractions...
2018
X-Ray Diffraction Techniques Applicable to Studies of Diagenesis and Low Rank Metamorphism in Humic Sediments
George M. Griffin
Journal of Sedimentary Research (SEPM)
...X-Ray Diffraction Techniques Applicable to Studies of Diagenesis and Low Rank Metamorphism in Humic Sediments George M. Griffin 1967 Vol. 37 No. 4...
1967
The Wave Equation Applied to Migration
D. Loewenthal, L. Lu, R. Roberson, J. Sherwood
Southeast Asia Petroleum Exploration Society (SEAPEX)
... is the corresponding seismic record section. The latter was derived from the earth cross-section by means of hand calculations using ray theory. The computer inputs...
1978
Abstract: The Effects of Fluid Viscosity on Seismic Response: A Model Study; #90171 (2013)
Fereidoon Vasheghani, Larry Lines, and Joan Embleton
Search and Discovery.com
... of propagation of stress waves in the medium for elastic porous frame filled with viscous fluid. Therefore in this theory, losses caused by solid framework...
2013
Clay Minerals of Laramie Formation, Golden, Colorado, Identified by X-ray Diffraction
Arthur James Gude, rd
AAPG Bulletin
...) (Barton and Jones, 1948) are methods which have been experimentally successful. X-RAY DIFFRACTION THEORY X-ray diffraction theory is elaborate...
1950
POCS Method for Seismic Data Reconstruction of Irregularly Sampled Data
Elwyn J. Galloway
Search and Discovery.com
...-limiting operators (velocity filters). The incorporation of physical projections that are consistent with wave propagation theory leads to an improvement...
Unknown
POCS Method for Seismic Data Reconstruction of Irregularly Sampled Data
Elwyn J. Galloway
Search and Discovery.com
...-limiting operators (velocity filters). The incorporation of physical projections that are consistent with wave propagation theory leads to an improvement...
Unknown
Diffraction amplitudes as a quantitative fracture property interpretation tool
Donald C. Adams, César Barajas-Olalde, Nourelhouda Benouadah, Trevor L. Richards, Bethany A. Kurz
International Meeting for Applied Geoscience and Energy (IMAGE)
... is present over the horizontal contact in both models. In Case 87, the edge diffraction interacts with the horizontal contact to produce a guided wave...
2023
A Comparison of Air Photograph and Computer Simulated Wave Refraction Patterns in the Nearshore Area, Richibucto, Canada and Jervis Bay, Australia
Edward A. Bryant
Atlantic Geology
... such diagrams, and McCann and Bryant (1973) related areas of erosion between 1894 and 1964 for the barrier islands of Kouchibouguac Bay to wave ray...
1974