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The AAPG/Datapages Combined Publications Database

Showing 18,041 Results. Searched 195,354 documents.

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Abstract: Do You Have a Moment: the Importance of Instrumentation in Moment Magnitude Estimation; #90224 (2015)

W. Greig and N. Spriggs

Search and Discovery.com

... to a nominal criterion defined below. Estimating moment magnitude depends on imaging the flat, low frequency portion of the Brune displacement spectrum...

2015

Development of Raman Spectroscopy as a Thermal Maturity Proxy in Unconventional Resource Assessment

Grant Myers, Kelsey Kehoe, Paul Hackley

Unconventional Resources Technology Conference (URTEC)

...) at the U.S. Geological Survey (USGS) and Raman microscopy (RM) at WellDog. In semi-blind Phase I, BRo values of the initial set of 8 samples were...

2018

Spectral Analysis of the Middle Triassic Latemar Limestone

Linda A. Hinnov, Robert K. Goldhammer

Journal of Sedimentary Research (SEPM)

.... KAY, S.M., AND MARPLE, S.L., 1981, Spectrum analysis--a modern perspective: Proceedings of the IEEE, v. 69, p. 1380-1419. KUKLA, G., BERGER...

1991

Water in Skeletal Carbonates

Susan J. Gaffey

Journal of Sedimentary Research (SEPM)

... a different H2O phase. Absorption features numbered as in previous figures. Mismatch between data and fit curve at ends of spectrum is due to additional...

1988

Time Frequency Gathers: An Optimal Spectral Decomposition Analysis Approach

Badsha Basu Roy

Indonesian Petroleum Association

... Proceedings, 2016 T(t) is seismic trace, H(t) is Hilbert’s transform of T(t) i.e. 900 phase shift of T(t) It is represented as positive values...

2016

Abstract: Exploring Potential Applications of Gaussian Ball Filters in Sharpes Hollow Cavity Model; #90224 (2015)

Christopher C. Petten and Gary F. Margrave

Search and Discovery.com

... activation waveforms. We found that that a Ricker and a minimum phase wavelet produced the most reasonable results that might be expected from a real explosion...

2015

ABSTRACT Pre-existing Zones of Weakness: An Experimental Study of Their Influence on the Development of Extensional Faults, #90104 (2010)

Henza Alissa A.; Withjack Martha O.; Schlische Roy W.

Search and Discovery.com

... whose directions  differ by 45°. To vary the properties of the first‐phase fault fabric, we vary the magnitude of the first‐phase extension...

2010

Structural Analysis Using Spatial Filtering in Interior Plains of South-Central Alberta

J. E. Robinson , H. A. K. Charlesworth , M. J. Ellis

AAPG Bulletin

... by frequency, the amplitude spectrum of the input with that of the suspension, and the phase spectrum is found by adding the phase spectra of the input...

1969

3-D Seismic Volume Visualization in Color; #42491 (2020)

Satinder Chopra, Ritesh Kumar Sharma, Kurt J. Marfurt

Search and Discovery.com

... are rendered on workstation monitors. The Visible Spectrum Light consists of waves that form a small region of the electromagnetic spectrum...

2020

Low Frequency Shadow Zone Analysis Based on CWT Spectral Decomposition: Case Study of South Sumatra Basin

Abdul Haris, I Nengah Suabdi, Erwinsyah, Adriansyah, Abdullah Nurhasan, Ahsanul Khair, Ian A. Kainama

Indonesian Petroleum Association

... of individual frequency magnitude from such a 3D volume with a close correlation with well production performance can help detect low-frequency shadows...

2008

Abstract: Impedance Inversion of Blackfoot 3D Seismic Dataset; #90171 (2013)

A. Swisi and Igor B. Morozov

Search and Discovery.com

...) This operator maps the seismic spectrum onto the earth impedances spectrum. The operator is constructed by fitting a power-law dependence f to the AI...

2013

Extended Abstract: Detailed Interpretation of a Channel System Using Geological Expression Workflows: A Case Study from the Taranaki Basin, New Zealand

Hugo M. P. Garcia, Tom Wooltorton

GCAGS Transactions

... and relationship of the individual channels. Background Geology The development of the basin can be divided in four main phases. Each phase...

2014

Near-Shore Ripples: Some Hydraulic Relationships

A. S. Trenhaile

Journal of Sedimentary Research (SEPM)

... and quadrature spectrum values were highest for the lower frequencies, the ones most likely to occur, although the out-of-phase or quadrature spectrum values were...

1973

A fractal model for hydrocarbon resource assessment with an application to the natural gas play of volcanic reservoirs in Songliao Basin, China

Caineng Zou, Qiulin Guo, Jinghong Wang, Hongbing Xie

CSPG Bulletin

... map) is also transformed to a frequency domain by FFT, obtaining an amplitude spectrum (denoted as OAMsize) and a phase spectrum (denoted as OPMsize...

2012

Wave Modeling and Hydrodynamics

J. Ian Collins

Special Publications of SEPM

... definition of the directional energy density spectrum and its modification by wind bottom topography waves bottom friction and nonlinear interactions...

1987

Filtering of Depositional Events and the Completeness of Sedimentary Sequences

Kevin D. Crowley

Journal of Sedimentary Research (SEPM)

... a characteristic magnitude (m) and frequency of occurrence (). A "discrete phase of sedimentation" comprises that volume of reworked or newly...

1984

Petrophysical characterization of Lower Cretaceous marly chalk through 1H-NMR and complex conductivity

Ermis Proestakis, Leonardo Teixeira Pinto Meireles, Ida Lykke Fabricius

International Meeting for Applied Geoscience and Energy (IMAGE)

... that the quadrature conductivity spectrum provides information on pore space geometry similar to the T2 relaxation time domain. Sample conductivity was lower...

2023

Fractal Structure of Stylolites

Carl N. Drummond, Damon N. Sexton

Journal of Sedimentary Research (SEPM)

... of the spectrum. This red-shifted spectrum is best modeled as a persistent fractional noise. Such noise spectra are those where successive positions along...

1998

Abstract: Magnitude, Scaling, and Spectral Signature of Tensile Microseisms; #90224 (2015)

David W. Eaton

Search and Discovery.com

... the low-frequency displacement spectrum. In the case of tensile rupture, there is less ambiguity and source radius (a) can be related to moment magnitude...

2015

Chapter Six: Tuning Phenomena in Reservoirs

Alistair R. Brown

AAPG Special Volumes

... of Three-Dimensional Seismic Data (Seventh Edition), 2011 Kallweit, R. S., and L. C. Wood, 1982, The limits of resolution of zero-phase wavelets...

2011

Problems in Provinciality: ABSTRACT

C. A. Ross

AAPG Bulletin

... of provinciality and the paleogeographic patterns of different types of provinciality. A broad spectrum of interpretations on this diverse subject is drawn...

1972

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