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The AAPG/Datapages Combined Publications Database

Showing 15,219 Results. Searched 189,743 documents.

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Practical Applications of Amplitude-vs-Offset Analysis in Expanded Yegua Exploration

James L. Allen

Houston Geological Society

... reflection coefficients for gas sands at nonnormal angles of incidence," Geophysics, Vol. 49 No. 10, pp 1637-1648, October 1984. Yu, Gary, "Offset...

1989

Radio Transmission and Geology: GEOLOGICAL NOTES

Edmund M. Spieker

AAPG Bulletin

...------------------------------ which separates the state into four zones graded as to effectiveness of transmission, is a generalized reflection of the geologic map...

1936

Geologic/Geophysical Study of Fluvial Delta in Offshore Louisiana: ABSTRACT

John E. Jordan, Jr.

AAPG Bulletin

..., and a seismic facies model. The synthetic seismogram was made from Well C using a velocity log and a density log to obtain the reflection coefficients...

1981

Abstracts: The Reflectivity Response of Multiple Fractures and its Implications for Azimuthal AVO Inversion; #90173 (2015)

Olivia Collet, Benjamin Roure, Jon Downton

Search and Discovery.com

... reflection/transmission coefficients for weakly anisotropic elastic media: Studia geoph. et geod., 45:176–199, 2001. Sayers, C. M., Seismic...

2015

Abstract: Broadband Acoustic Impedance Reconstruction from Band-Limited Seismic Reflection Data: A Feasibility Study from First Principles; #90255 (2017)

Animesh Mandal, Santi Ghosh

Search and Discovery.com

... to an initial model or by assuming certain criterion such as sparsity of the reflection coefficients. Considering a homogeneous and horizontal layered...

2017

Abstract: Combining transmission digital holographic microscopy and fluorescence microscopy for observing particles of coal palynofacies

A. Restrepo-Martínez, G. Indebetouw, R. Castañeda, A. Blandón

The Society for Organic Petrology (TSOP)

.... Castañeda1, A. Blandón1 1 Universidad Nacional de Colombia, Sede Medellín. 2 Virginia Tech, USA. Transmission and/or reflection digital holographic...

2008

P-Wave Impedance, S-Wave Impedance and Density from Linear AVO Inversion: Application to a VSP Data from Alberta

Faranak Mahmoudian

Search and Discovery.com

... and transmission coefficients. The Aki-Richards (1980) linear approximations for PP and PS reflection coefficients, RPP and RPS , can be formulated...

Unknown

P-Wave Impedance, S-Wave Impedance and Density from Linear AVO Inversion: Application to a VSP Data from Alberta

Faranak Mahmoudian

Search and Discovery.com

... and transmission coefficients. The Aki-Richards (1980) linear approximations for PP and PS reflection coefficients, RPP and RPS , can be formulated...

Unknown

Abstract: Derivation of Generalized Reflections From Point Sources in VTI Media; #90211 (2015)

Charles Ursenbach and Arnim B. Haase

Search and Discovery.com

... are obtained. These are given as integrals over the corresponding planewave displacements. The generalized reflection coefficients are then derived...

2015

Abstract: A Study of PS Wave AVO; #90255 (2017)

Young-Fo Chang, Jai-Wei Liu

Search and Discovery.com

... reservoir (shale-gas sand interface) must be classified and addressed. Therefore, in this study, the incident angles dependent reflection coefficients...

2017

Quantitative Petrophysical AVO Error Analysis in a Layered Model

Search and Discovery.com

...). Then seismic amplitudes from top of layer 6 were calibrated and compared to the plane-wave reflection coefficients (Figures 3 and 4). Figure 3 and 4 shows...

2013

The Limitations of Seismic Modelling of Geological Structures

B. L. N. Kennett

Petroleum Exploration Society of Australia (PESA)

..., the amplitude is reduced by the appropriate reflection or transmission coefficients calculated as for the incidence of a plane elastic wave on a planar...

1985

AVO Modeling of Monochromatic Spherical Waves: Comparison to Band-Limited Waves; #41567 (2015)

Charles Ursenbach, Arnim Haase

Search and Discovery.com

... and convenient method for calculating monochromatic spherical-wave reflection coefficients, and 2) a clearer understanding of how spherical-wave...

2015

3-D Tomographic Amplitude Inversion for Compensating Transmission Losses in the Overburden

Barry Hung, Kefeng Xin, Sergey Birdus, James Sun

Indonesian Petroleum Association

...3-D Tomographic Amplitude Inversion for Compensating Transmission Losses in the Overburden Barry Hung, Kefeng Xin, Sergey Birdus, James Sun © IPA...

2009

Improved TOC and Lithology Prediction for Wolfcamp Shales Using AVO Attribute Analysis

Jaewook Lee, Un Young Lim, David Lumley

Unconventional Resources Technology Conference (URTEC)

... (A, B, C) terms from the modeled reflection coefficients. Our results show that the C term can serve as a good lithology indicator because...

2020

An Analysis of a Seismic Reflection from the Base of a Gas Hydrate Zone, Offshore Peru (1)

JOHN J. MILLER , MYUNG W. LEE , and ROLAND VON HUENE

AAPG Bulletin

... OF REFLECTION COEFFICIENTS The reflection coefficient of the sea floor (Rc[sf]) was determined from the ratio of the amplitude of the sea floor...

1991

Abstract: P- and S-Wave Velocity Measurements and Pressure Sensitivity Analysis of AVA Response; #90211 (2015)

Tiewei He and Douglas Schmitt

Search and Discovery.com

... and differential pressure for water saturated sample SB007. Figure 5. P-P (left) and P-SV (right) reflection coefficients as a function of angle...

2015

G. Non-Normal Incidence Reflections and the Determination of Lithology - Use of Shear Waves and Amplitude with Offset

Norman S. Neidell

AAPG Special Volumes

....), "Approximations to the Reflection and Transmission Coefficients of Plane Longitudinal and Transverse Waves," Geophysical Prospecting, Vol. 9, No. 4, pp...

1987

Abstract: Exact, Linear and Nonlinear AVO in Terms of Poroelastic Parameters; #90187 (2014)

Steven Kim and Kris Innanen

Search and Discovery.com

... of the reflection or transmission coefficients in equation (10). Our research focuses on but we may use Cramer’s rule to solve for , , or . Cramer’s rule...

2014

VSP: Lessons from Numerical Simulation

M. Suprajitno, S. A. Greenhalgh

Indonesian Petroleum Association

... computing the 'resultant' transmission and reflection coefficients at R (Figure 1). The resultant coefficients are expressed in the frequency domain...

1985

Abstract: Seismic Amplitude Measurement for Primary Lithology Estimation (SAMPLE): Case Histories From Tertiary Western Basins

G. S. Gassaway

Earth Science Bulletin (WGA)

..., and pore fluids are estimated. The SAMPLE method works because reflection and transmission of elastic waves (seismic waves) at the boundary between...

1984

ABSTRACT: Automatic System for Scanning and Autofocusing of Digital Images Applied to a Coal Petrographic Microscope

Alejandro Restrepo-Martínez, Astrid Blandón-Montes

The Society for Organic Petrology (TSOP)

... are observed with white and fluorescence light, using reflection and transmission setups, respectively. The system proposed is a useful tool for automatic...

2009

Delineation of the Reservoir by Seismic Methods: Chapter 3

Roberto Sarmiento

AAPG Special Volumes

... resulting from the convolution of the reflection coefficients, taking transmission losses into consideration; 4. Multiples only; 5. Sum of 3 and 4...

1989

Abstract: Intrinsic and Apparent Seismic Attenuation in VSP Data; #90211 (2015)

Arnim Haase and Robert Stewart

Search and Discovery.com

.... For non-zero offset cases, these synthetic VSP’s show multiples and multimodes on reflection and transmission. At small source offsets, trace maxima...

2015

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