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The AAPG/Datapages Combined Publications Database

Showing 48,072 Results. Searched 190,142 documents.

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Abstract: Regime Rays: Visualizing the Fermat/Snell Loci in Homogeneous Anisotropic Media; #90171 (2013)

William J. Vetter

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... wavelength/compositesrepetition-thickness ratio (e.g. Macbeth 2002). I suggest that Fermat’s principle and Snell’s law should apply in such composites...


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

... Processing: Society of Exploration Geophysicists, Tulsa, Oklahoma, 526 p. Ray trace modeling calculates seismic ray paths that obey Snell's law...


Anisotropy Kinematics Clarified through Regime Rrays Model

William J. Vetter

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... 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...


Anisotropy Kinematics Clarified through Regime Rrays Model

William J. Vetter

Search and

... 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...


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)

... reflections, which follow Snell's law and for which the angle of incidence equals the reflection angle. Many time processing steps are designed...


Forward Modeling of Seismic Data: Part 7. Geophysical Methods

George Mellman, Paul A. Kunzinger

AAPG Special Volumes

... Snell's law, and are partially reflected when velocity or density discontinuities are encountered. Traveltimes of reflected arrivals correspond...


Image - Rays and the Treatment of Inhomogeneity in Migration

L. Hatton

Southeast Asia Petroleum Exploration Society (SEAPEX)

... be attributed to the fact that Snell’s law is absent from the Kirchhoff-summation wave equation time migration method, as commonly implemented. It can...


Time-Lapse Refraction Seismic I: A Complementary Monitoring Method?

Martin Landrø, Lasse Amundsen

GEO ExPro Magazine

... obeying Snell’s law (sin θ1/v1 = sin θ2/v2) across an interface, the wave is refracted. The portions of the initially downgoing energy refracted along...


Abstract: Constraining Anisotropy … Lessons from 2D Modeling; #90211 (2015)

Rob Holt

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... are inferred. Extensive testing was performed to verify the ray tracer, from basic tests such as whether or not the code honors Snell’s law...


Abstract: Law of the sea and offshore geophysics

Bosko D. Loncarevic

Atlantic Geology

...Abstract: Law of the sea and offshore geophysics Bosko D. Loncarevic 148 AGS Abstracts – 2004 Colloquium & Annual General Meeting Law of the sea...


Abstract: Calculation of Amplitude and Velocity in General Anisotropic Media; #90224 (2015)

M. Malehmir and D. R. Schmitt

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... of this approach, consider an incident plane wave arriving from above to a plane boundary between two anisotropic media, figure 1. General Snell’s law for anisotropic...


Secondary Porosity Revisited: The Chemistry of Feldspar Dissolution by Carboxylic Acids and Anions (1)


AAPG Bulletin

... kinetics and greater aluminum mobility under low-pH conditions. The general absence of such low-pH fluids in subsurface reservoirs makes...


Chapter Ten-part 2: Depth Conversion

Leslie R. Denham, Dave K. Agarwal

AAPG Special Volumes

... with a vertical ray and bending it according to Snell’s Law at all velocity boundaries. This process is called “image ray migration.” If there is an abrupt...


Thermal Subsidence and Generation of Hydrocarbons in Michigan Basin

Jeffrey A. Nunn , Norman H. Sleep , Wayne E. Moore

AAPG Bulletin

... sciences, Proceedings of the NATO Advanced Study Institute at Newcastle-Upon-Tyne: London, Academic Press, p. 685-692. Sleep, N. H., and N. S. Snell, 1976...


Historical Overview of Various Corporation and Distribution Tax Aspects of Parties Engaged in Petroleum Operations in Indonesia

Jan Carel M. Van Dorp

Indonesian Petroleum Association

...) of the Constitution prescribes that: No taxes for the benefit of the Treasury can be imposed on the people except by law ("Every form of tax shall...


Angle Gathers for Gaussian Beam Depth Migration, #41593 (2015).

Samuel Gray

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... by surface incidence or emergence angle, i.e., the angle at the source or receiver location that corresponds by Snell’s law to the subsurface incidence angle...


Star: Shallow Time Anomaly Replacement

Michael O. Marcoux, Lee Lu

Southeast Asia Petroleum Exploration Society (SEAPEX)

... normals or rays, according to Snell’s law. In many practical instances, the moveout which varies between reflection, the so-called dynamic component can...


Combined P and S Waves Survey for Hydrocarbon Exploration

Basuki Puspoputro

Indonesian Petroleum Association

... the generalized forms of Snell's law still hold as far as the directions of the different waves are concerned (see Figure 1): Figure 1. Partition of energy...


Liability for Geologic Hazards

Alan H. Coogan

Houston Geological Society

... to avoid harm and damage occurs. Citations to law cases are made in the standard legal form. For readers unfamiliar with this citation style, the elements...


North Louisiana: Early Gas Development and History of Conservation Laws

A. A. Meyerhoff , James M. Forgotson, Sr.

AAPG Special Volumes

... of a single officer, the Commissioner of Conservation. 1918: Act 268. This was the first general law for the prevention of gas waste (Daggett, 1949...


Characterization of natural fracture systems: Analysis of uncertainty effects in linear scanline results

Rafael F. V. C. Santos, Tiago S. Miranda, José A. Barbosa, Igor F. Gomes, Gabriel C. Matos, Julia F. W. Gale, Virginio H. L. M. Neumann, and Leonardo J. N. Guimarães

AAPG Bulletin

... of the power law (Table 1). In general, the variability of the measurements imposed on the scanline data set makes it possible to propagate and observe...


Ocean Basin Ages and Amounts of Original Sediments

Edwin L. Hamilton

Journal of Sedimentary Research (SEPM)

.... Simple trigonometry and Snell's Law indicate no significant additional thickness of the whole section because of assuming a third layer, shale...


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