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The AAPG/Datapages Combined Publications Database

Showing 57,424 Results. Searched 191,921 documents.

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Lithology Identification Using Amplitude Variations with Offset: Examples from South Sumatra

Soman Chacko

Indonesian Petroleum Association

... Sumatra. BORTFELD, R, 1961. Approximations to the reflection and transmission coefficients of plane longitudinal and transverse waves. Geophysical...

1986

Abstract: Seismic Implications of Moveable Fluids; #90254 (2016)

Robert W. Wiley, Peter Wilson, Scott Peters

Search and Discovery.com

...’s reflection coefficients and FDV in selected layers...

2016

AVO Analysis of a Pennsylvanian Age Channel Sandstone in the Arkoma Basin, Oklahoma

Eric Kubera

Oklahoma City Geological Society

... for this dataset is shown in Figure 7. On the color scale, red and yellow correspond to positive normal incidence reflection coefficients, and white...

1997

Abstract: AVO Theory for Large Contrast Elastic and Anelastic Targets in Pre-Critical Regimes; #90187 (2014)

Kris Innanen

Search and Discovery.com

... to mode conversions, i.e., the θ dependence of RPS; 2. The importance of the number VP/VS=2 to all elastic reflection coefficients; 3. Wave scattering...

2014

Abstracts: Time-lapse Differential AVO: Reflection Coefficient at Fluid-fluid Boundary; #90173 (2015)

Jinfeng Ma

Search and Discovery.com

... in the reservoir. 4D differential reflection coefficients will be mainly determined by fluid-fluid reflection coefficient part of Bortfeld’s approximation...

2015

Abstracts: On the Extraction of Seismic AVF Information and the Inversion of Anelastic Reflectivity; #90173 (2015)

Chris Bird, Kristopher Innanen, Laurence Lines

Search and Discovery.com

...) and linearize (assuming small aQ and aC) to obtain the following expression for anelastic reflection coefficients 1 1 (5) R( )   aQ F ( )  aC 2 4...

2015

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

Spherical-Wave Computational AVO Modelling in Elastic and Anelastic Isotropic Two-Layer Media; #41564 (2015)

Arnim B. Haase, Charles P. Ursenbach

Search and Discovery.com

... are investigated. These responses are computed by utilizing Zoeppritz reflection coefficients and the Weyl/Sommerfeld-integral. Spherical-wave depth dependence...

2015

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

Chapter 2: Basics of Reflection Seismology that Relate to Seismic Stratigraphy

Tom Wittick

North Texas Geological Society

.... Reflection Coefficients When sound impinges on an interface of two materials which have different acoustic impedance values a portion of the sound...

1992

Basics of Reflection Seismic Technology

Abilene Geological Society

... the seismic response. Reflection Coefficients When sound impinges on an interface of two materials which have different acoustic impedance values...

1993

Use of Windowed Seismic Attributes in 3D Seismic Facies Analysis and Pattern Recognition

David C. Carter

Indonesian Petroleum Association

... such an attribute confined by a small window above or below a mapped sequence boundary or downlap surface, it is possible to directly image reflection...

1996

Chapter 8: Amplitude Versus Offset

Tom Wittick

North Texas Geological Society

... a polarity opposite to the synthetic seismogram. Class 2 anomalies have very small reflection coefficients at normal incidence. At small incidence angles...

1992

Amplitude Versus Offset

Abilene Geological Society

... very small reflection coefficients at normal incidence. At small incidence angles they cannot be seen above the noise level on a seismic section...

1993

Abstract: Spherical-Wave AVO Modelling in VTI Media; #90211 (2015)

Arnim Haase and Charles Ursenbach

Search and Discovery.com

.... Previous work by the authors involved using isotropic plane-wave reflection coefficients together with the Weyl integral to compute isotropic spherical...

2015

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

Abstracts: A Decomposition of RP into Contributions from single-parameter Reflectivities; #90173 (2015)

Kristopher A. Innanen

Search and Discovery.com

... from small to large angle. Introduction Practical inversion of amplitude information in reflection seismic data (e.g., Castagna, 1993; Downton...

2015

Mapping Stratigraphic Traps with Seislog

Roy O. Lindseth

Indonesian Petroleum Association

... velocities (and the effects of density) of the same sedimentary section. The sonic log and the related set of reflection coefficients, ignoring density...

1977

Experience with Seismic Lithology (AVO) in Central Sumatra

Jeff Wright, Isdjulaedi Bakri, Budi Subiyanto

Indonesian Petroleum Association

... model shows a small decrease with offset while the gas sands show strongly increasing reflection coefficients as the angle of incidence changes from 5...

1990

Seismic Evidence for Widespread Possible Gas Hydrate Horizons on Continental Slopes and Rises

Thomas H. Shipley, Mark H. Houston, Richard T. Buffler, F. Jeanne Shaub, Kenneth J. McMillen, John W. Ladd, J. Lamar Worzel

AAPG Bulletin

... coefficients, reflection polarity, and pressure-temperature relations all support the identification of the anomalous reflections as the base of gas...

1979

Abstract: Recovering Low Frequencies for Impedance Inversion by Frequency Domain Deconvolution; #90224 (2015)

Sina Esmaeili and Gary Frank

Search and Discovery.com

.... To calculate the acoustic impedance instead of using the impedance to compute reflection coefficients in equation 3, it is possible to use reflection...

2015

Delineation of the Reservoir by Seismic Methods: Chapter 3

Roberto Sarmiento

AAPG Special Volumes

... events; and (4) reduction of the trace to a relatively small number of spikes with amplitudes and polarities defined by the reflection coefficients...

1989

Seismic Stratigraphy and Global Changes of Sea Level: Part 6. Stratigraphic Interpretation of Seismic Reflection Patterns in Depositional Sequences: Section 2. Application of Seismic Reflection Configuration to Stratigraphic Interpretation

R. M. Mitchum Jr., P. R. Vail , J. B. Sangree

AAPG Special Volumes

... reflection will be continuous if the reflection coefficient of the unconformity is significantly greater than the reflec ion coefficients of the underlying...

1977

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