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The AAPG/Datapages Combined Publications Database

Showing 15,804 Results. Searched 195,364 documents.

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Physical Basis of Reflection Seismology

Bruce S. Hart

Special Publications of SEPM

... the controls on i pedance, and so reflection coefficients, we need to look at the density and velocity ter s a bit ore . The density or, ore correctly, the bulk...

2000

Induced AVO Anomalies from Pore Pressure Effects

A.C. Buginga Ramos, M.A. Santiago Toledo

Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)

... the knowledge of pore pressure effects these anomalies could easily be confused with pay zones. Figure 8 shows the P-wave reflection coefficients...

2006

Relative Impedance Inversion of Seismic Traces by Means of Complex Trace Attributes (CTA Inversion) … 40 Years On!, #42179 (2018).

Kurt Grubbe, Sean McQuaid

Search and Discovery.com

... of reflection coefficients with a zero-phase wavelet (Robertson and Nogami, 1984; Robertson and Fisher, 1988). They found a significant and unique...

2018

Basic Seismic Processing: Part 7. Geophysical Methods

Peter M. Duncan

AAPG Special Volumes

... related to shot and receiver positions on the surface of the earth, an elapsed time after the shot that originated the reflection or echo (traveltime...

1992

Use of SEISLOG for Basin Evaluation and Field Development

R. C. Mummery

Geological Society of Malaysia (GSM)

... transit time data of the sonic log is transferred into the time domain and converted to reflection coefficients using the relationship shown in Figure 1...

1987

Moho structure of Australia from probabilistic inversion of teleseismic P-wave coda autocorrelation

Mehdi Tork Qashqai, Erdinc Saygin

Petroleum Exploration Society of Australia (PESA)

... of the seismic transmission response (generated by a deep source) corresponds to the reflection response beneath the station as if there was a virtual source...

2019

Creating Singularity Order Attribute of Seismic Signals Using Continuous Wavelet Transform (CWT) for Stratigraphic Interpretation Tools

A.M. Ustad, M.S. Jaya, F.J. Herrman

Indonesian Petroleum Association

... as dis (appearance) of local maxima in wavelet transform coefficients. The output of this attribute produces a map of singularity structure. It can...

2007

The Petrology of Some Pennsylvanian Black "Shales"

Charles E. Payton, Leo A. Thomas

Journal of Sedimentary Research (SEPM)

.... The siltstones have an average mineral composition within the range of sub-graywacke to graywacke. Sorting coefficients range from 1.9 to 4.3...

1959

Long-Offset Approximations to NMO Function for a Layered Subsurface

E. Blias

Search and Discovery.com

.../depth ratio. Conventional velocity analysis uses hyperbolic approximation for the reflection traveltimes: t( x) 2 T02  x 2 VRMS (1) Here T0...

Unknown

Long-Offset Approximations to NMO Function for a Layered Subsurface

E. Blias

Search and Discovery.com

.../depth ratio. Conventional velocity analysis uses hyperbolic approximation for the reflection traveltimes: t( x) 2 T02  x 2 VRMS (1) Here T0...

Unknown

Seismic Characterization of the Fiordland Gas-hydrate Province, New Zealand

Miko Fohrmann, Andrew R. Gorman, Ingo A. Pecher

AAPG Special Volumes

..., New Zealand: Journal of Structural Geology, v. 19, no. 10, p. 13231342.Ostrander, W. J., 1984, Plane-wave reflection coefficients for gas sands...

2009

Some Results of Dynamic Analysis of Reflected Waves in the Area of the Kuleshov Oil Field

A. I. Belyayeva, O. I. Rogoza, S. A. Semenova

Petroleum Geology: A Digest of Russian Literature

..., and the values of the coefficients of reflection qn and qn+1 on these boundaries. Consequently, the graphs of An+1/An = ϕ(x) quantitatively reflect...

1966

Abstract: Joint PP and PS AVO Inversion Based on Zeopprtiz Equations; #90171 (2013)

Tiansheng Chen and Xiucheng Wei

Search and Discovery.com

... equations to inverts for the ratio of density, P-wave velocity and S-wave velocity using the PP and PS plane wave reflection coefficients. At small incident...

2013

Abstract: Joint PP and PS AVO Inversion Based on Zeopprtiz Equations; #90171 (2013)

Tiansheng Chen and Xiucheng Wei

Search and Discovery.com

... equations to inverts for the ratio of density, P-wave velocity and S-wave velocity using the PP and PS plane wave reflection coefficients. At small incident...

2013

Natural Gas in the Wilcox Trend of South Texas

Fred L. Oliver

GCAGS Transactions

... control in most localities. Many prospects, however, require better delineation, and detailed reflection seismograph surveys yield excellent exploratory...

1958

AVAZ inversion for brittleness indicator and fracture parameters of gas-bearing reservoirs with tilted transverse isotropy

Yuanyuan Tan, Guangzhi Zhang, Zhengqian Ma, Ying Lin

International Meeting for Applied Geoscience and Energy (IMAGE)

... the amplitude variation with the angle and azimuth (AVAZ) inversion. First, we derive a linearized PP-wave reflection coefficient of the TTI medium...

2023

Towards a Balance of Pore Size Distribution of Non-Conventional Hydrocarbon Reservoirs: a Combination of Bulk Techniques Applied to Comparable Sub-Samples Localized by 3D X-ray µ-Tomography

Natalia Matskova, Dimitri Pret, Stéphane Gaboreau, Philippe Cosenza, R. Brechon, I. Gener, Claire Fialips, G. Dubes, François Gelin

Unconventional Resources Technology Conference (URTEC)

... presenting (i) similar non-clay grain amounts, (ii) similar X-ray linear attenuation coefficients, and (iii) no cracks or macro-heterogeneities...

2017

Abstract: Seismic Source Wavelet Estimation and Sparse-spike Deconvolution; #90174 (2014)

Zhengsheng Yao and Mike Galbraith

Search and Discovery.com

...) and a source wavelet, i.e. (1) where r refers to a time series of reflect coefficients and h refers to a source wavelet. Because the convolution...

2014

One-Dimensional Prestack Seismic Inversion with Very Fast Simulated Annealing using Edge-Preserving-Smoothing Filter; #41576 (2015)

Somanath Misra, Mauricio Sacchi

Search and Discovery.com

...-offset data are converted to the angle-domain by shooting rays from the source to receiver. The PP reflection coefficients are calculated from...

2015

General Geology and Oil Possibilities of the Amazonas Basin in Brazil

Luis G. Morales

Tulsa Geological Society

... of the problem, preliminary computations of absorption and reflection coefficients (terms of amplitude) indicated an energy return to surface or less...

1963

SG14: The COCORP Seismic Reflection Traverse Across the Southern Appalachians - Data Acquisition and Processing

Frederick A. Cook, Larry D. Brown, Sidney Kaufman, and Jack E. Oliver

AAPG Special Volumes

...SG14: The COCORP Seismic Reflection Traverse Across the Southern Appalachians - Data Acquisition and Processing Frederick A. Cook, Larry D. Brown...

1983

An Easily Constructed, Very Inexpensive, Solar Cell Transmissometer (SCT): RESEARCH METHODS PAPERS

Stephen C. Knowles, John T. Wells

Journal of Sedimentary Research (SEPM)

... predicted by SCT and OBS during field trial. End_Page 213------------------------ light transmission and a particle size dependent transmissometer...

1998

X-Radiography of Rocks with I-125 Source: GEOLOGICAL NOTES

Malcolm P. Weiss

AAPG Bulletin

... uniform, as it seems to be in most limestones, differential transmission of the radiation depends on differences in porosity (Figs. 1, 4) or delicate...

1966

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