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The AAPG/Datapages Combined Publications Database
Showing 36 Results. Searched 195,364 documents.
Fermat’s Principle Raypaths in 3D Anisotropic Media
Bill Vetter
CSPG Special Publications
...Fermat’s Principle Raypaths in 3D Anisotropic Media Bill Vetter 1998 23 24...
1998
The Application of a Linear Increase of Velocity with Depth to Seismic Dip Migration
J. E. Stones
Oklahoma City Geological Society
..., which is an outgrowth of Fermat's Principle, relates the reflection and/or refraction of a ray impinging on a discontinuity to the velocity contrast...
1958
Finite Difference Modelling: Part IV
Lasse Amundsen, Ørjan Pedersen, Martin Landrø
GEO ExPro Magazine
... of reflection and refraction of light can be based on a theory known as geometric optics or ‘ray theory’, where light waves are represented with simple geometric...
2019
Chart Migrations
Frank A. Roberts
Oklahoma City Geological Society
..., depth and offset of reflecting horizons. The construction of the graph must include: Fermat's fundamental principle of seismology which is that a wave...
1958
Abstract: Regime Rays: Visualizing the Fermat/Snell Loci in Homogeneous Anisotropic Media; #90171 (2013)
William J. Vetter
Search and Discovery.com
... wavelength/compositesrepetition-thickness ratio (e.g. Macbeth 2002). I suggest that Fermat’s principle and Snell’s law should apply in such composites...
2013
Anisotropy Kinematics Clarified through Regime Rrays Model
William J. Vetter
Search and Discovery.com
... channels (c.f. Cerveny 2001 p.28-30, p.103). They are (1) not traveltimes minimizing Fermat’s principle loci, (2) not pointwise Snell’s law conforming...
Unknown
Anisotropy Kinematics Clarified through Regime Rrays Model
William J. Vetter
Search and Discovery.com
... channels (c.f. Cerveny 2001 p.28-30, p.103). They are (1) not traveltimes minimizing Fermat’s principle loci, (2) not pointwise Snell’s law conforming...
Unknown
Dip and Azimuth Determination in 3D CRS-Stack
A. Hendriyana, M. Jaya, R. Sule, A.D. Guntara
Indonesian Petroleum Association
... properties along the raypath between source and receiver according to Fermat’s principle in ray theory. In contrast, CRS stacking operation...
2013
The Limitations of Seismic Modelling of Geological Structures
B. L. N. Kennett
Petroleum Exploration Society of Australia (PESA)
...) and extended to elastic waves by Kennett (1984a). Such a procedure allows, in principle, a complete treatment of reflection and transmission...
1985
Abstract: Predicting Free Surface Multiples without the Water: SRME on Land; #90224 (2015)
Keith Wilkinson, Richard Bale, and Ken Gray
Search and Discovery.com
... is applied, and Fermat’s principle (stationary phase) results in the true DRP being reconstructed. The set of traces which constitute cross-convolved...
2015
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)
... grids with two types of discretization, which are based on Fermat’s principle and Eulerian discretization. The accuracy and convergence...
2017
Critical Analysis of Stack Seismic Systems
L. E. Nugent, Jr.
AAPG Bulletin
... of Huygen and Fermat concerning wave advancement and minimum time paths, and Snell's law on refraction and reflection. Figure 2 has the same field...
1967
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)
... events, because the part of reflected energy, which falls outside the Fresnel zone, does not follow the shortest reflection path according to Fermat...
2015
Limitations of Reflection Seismograph
L. E. Nugent, Jr.
AAPG Bulletin
...Limitations of Reflection Seismograph L. E. Nugent, Jr. 1953 2513 2529 37 11. (November) Factors determining the precision of data procured...
1953
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)
... of the wave traveling like a ray through the shortest path (Fermat’s principle) in the model and change direction when encountering velocity and density...
2021
Diving wave tomography: Velocity modelling using first arrival traveltime
Amatul Syafi Abdul Basit, Abdul Rahim Md Arshad, Arulini Permalu
Geological Society of Malaysia (GSM)
..., wide angle reflection and refraction, teleseismic and local earthquake (Rawlinson & Sambridge, 2003). The relationship between traveltime and wave...
2022
Abstracts: Synthetic Microseismic Files; #90173 (2015)
J. Wong, P. M. Manning, L. Han, and J. B. Bancroft
Search and Discovery.com
... location using nonlinear optimization: CREWES Research Report, 21, 73.1-73.14. Wong, J., 2010. Fermat’s principle and ray tracing through anisotropic...
2015
Designing Coal-Bed Methane Seismic Acquisition Survey Parameters Using Finite Difference Modeling
Abdul Haris, Befriko Murdianto, Adriansyah
Indonesian Petroleum Association
... reflection seismic to borehole seismic. Furthermore, the response produces all physically possible wave types, providing a more intuitive than...
2009
Implementation of the DIPSCAN Method to Estimate Boundary Dips in Complicated Structures by VSP Data
A. A. Tabakov, V.N.Ferentsi, H. Gravini
Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)
...) and velocity model of media in a vicinity Ω are known. From Fermat’s principle follows, that the ray is propagated from source point S to receiver point M...
2006
Application of Traveltime Tomography and Kirchhoff Migration Methods to Improve the Seismic Cross-Section Resolution on 2D Land Seismic Data
Harmita Lestari, Nur Ayu Anas, Muh. Resky Ariansyah, Sabrianto Aswad, Heri Winarto
Indonesian Petroleum Association
.... Basic legal principles include Snellius’s Law, Huygens’s Principle, and Fermat’s Principle (Shearer, 2009). * ** Bolt (1976), mechanical waves...
2019
Abstract: Successful Imaging Below Salt: Technique and 2 Case Histories, by R. Marschall, H.-J. Zoch, C. Henke, M. Krieger, and F. Kockel; #90923 (1999)
Search and Discovery.com
1999
Subsurface Characterizaton Using Microseismic Velocity, Attenuation, and Ansiotrophy Tomography in a Geothermal Field
Ahmad Syahputra, Andri Dian Nugraha, Rachmat Sule, Sri Widiyantoro
Indonesian Petroleum Association
... bending is an approach in minimization of travel time base on Fermat’s Principle by applying small perturbations gradually on ray paths. Delay time...
2014
Integration of Magnetotelluric, Gravity and Seismic Data for Sub-Volcanic Imaging
Jeremy Gohitua MacArthur, Muhammad Fikri Putra, Nuha Malihati, Husnia Nur Annisa
Indonesian Petroleum Association
... as the research area. The seismic reflection method has been widely used in the oil and gas industry. However, the seismic reflection cannot provide...
2018
Evaluation of Seismic Exploration in Sub-Volcanic Reservoir Area by Synthetic Seismic Modeling
Yulia Nur Fajrina, Muhammad Ghazalli
Indonesian Petroleum Association
... of the difficulties they can pose for seismic reflection imaging and their perceived detrimental short-term and long-term impacts on petroleum systems...
2015
Recent Advances in Borehole Seismic
W. L. Nutt
Indonesian Petroleum Association
... and using a ray tracing program to model reflection times. This program is based on an iterative process to find the correct FERMAT ray paths from source...
1984