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The AAPG/Datapages Combined Publications Database

Showing 15,036 Results. Searched 187,807 documents.

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Finite Difference Modelling: Part IV

Lasse Amundsen, Ørjan Pedersen, Martin Landrø

GEO ExPro Magazine

... solve the acoustic wave equation through finite differences, the solution obeys the laws of reflection and refraction, which arise as a consequence...


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...


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...


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...


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...


The Use of the Seismograph Tool in the Western Canadian Foothills

L. H. Reed

CSPG Special Publications

... planning is even more critical in a refraction program than in the more conventional plains reflection surveys. This is because the refraction...


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...


Analog Model and Synthetic Seismogram Studies of Long Range Refraction Method: ABSTRACT

Stanley J. Laster, Richard Schell, Milo M. Backus

AAPG Bulletin

...Analog Model and Synthetic Seismogram Studies of Long Range Refraction Method: ABSTRACT Stanley J. Laster, Richard Schell, Milo M. Backus 1963 1772...


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

Martin Landrø, Lasse Amundsen

GEO ExPro Magazine

... geophysics, the seismic refraction method was commonly used, but gradually reflection seismic, as we know it today, demonstrated its usefulness and its...


Stratigraphic Principles (Concepts): Lecture 2

Robert J. Weimer

AAPG Special Volumes

... of principle: Amid all the revolutions of the globe, the economy of nature has been uniform...and her laws are the only things that have resisted the general...


Abstract: SAGD Production Monitoring by Seismic Refraction; #90172 (2014)

D. Dubucq, Tuhin Bhakta, P. Thore

Search and

... are refracted waves, and for geophones at a distance from the shot point, always represent the first arrival of seismic energy. Fig. 1: Refraction principle...


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...


Seismic Techniques in the Alberta Foothills

L. H. Reed

CSPG Special Publications

... location for each 6000 feet of refraction control in some foothills areas compare with five necessary for an equivalent amount of quarter-mile reflection...


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...


Upper Crustal Structure Derived from Seismic Refraction Experiments: Grand Banks of Eastern Canada

I. Reid, C.E. Keen

CSPG Bulletin

... and of basement, and compare the refraction results with deep seismic reflection results previously obtained along the same shot line. The main result...


Abstract: Migrating Reflections from the Moho Using a Refraction Velocity Model … An Example from the Slave Craton, NWT; #90211 (2015)

Joaquin Aristimuno and Claire Samson

Search and

... in seismi c velocity. In the Archean Slave Craton, NWT, coincident refraction and reflection surveys have been conducted in 1996 – 1997 as part...


Abstract: Predicting Free Surface Multiples without the Water: SRME on Land; #90224 (2015)

Keith Wilkinson, Richard Bale, and Ken Gray

Search and

... is applied, and Fermat’s principle (stationary phase) results in the true DRP being reconstructed. The set of traces which constitute cross-convolved...


Abstract: Seismic Techniques in the Alberta Foothills

L. H. Reed

CSPG Bulletin

... in acquiring usable reflection records, due to: disturbed conditions at reflection horizons depths, rough surface topography, and steeply dipping surface...


ABSTRACT: Geostatistical Recipes for Near Surface Modeling; #90051 (2006)

Aldo Vesnaver, Ralph Bridle, Robert Ley, Robert W. Rowe

Search and

... distortion m anifested in th e deep target im ages. hoc 3D reflection/refraction surveys can solve this problem in Ad principle, but their cost...


Application of Seismography to Geological Problems

Eugene McDermott

AAPG Bulletin

.... Refraction and reflection of wave in elastic rope. End_Page 1312------------------------------ mostly reflected as in the previous illustration. B...


The Reflection Seismograph Celebrates 50th Anniversary 1921 -- 1971

W. B. Robinson

Oklahoma City Geological Society

... of trajectories that traverse normal sediments. Seismic ray paths for Refraction vs. Reflection prospecting are illustrated in Figure 1. Very little refraction...


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