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The AAPG/Datapages Combined Publications Database

Showing 1,338 Results. Searched 195,452 documents.

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Abstract: The Phase Shift Time Stepping Equation and the Marmousi Data Set; #90171 (2013)

Ben D. Wards, Gary F. Margrave, and Michael P. Lamoureux

Search and Discovery.com

... Fourier transform which is exact for constant velocity medium. Introduction Reverse-time migration (Baysal et. al., 1983, McMechan, 1983; Whitmore...

2013

Geologic Use of the Computer

Daniel F. Merriam

Wyoming Geological Association

...., and Harbaugh, J. W., 1965, BALGOL programs and geologic application for single and double Fourier series using IBM 7090/7094 computers: Kansas Geol. Survey Sp...

1966

-- no title --

user

Search and Discovery.com

... be reconstructed using Fourier methods. In this case the Fourier coefficients of the irregularly sampled data are retrieved by inverting the inverse Fourier operator...

Unknown

-- no title --

user

Search and Discovery.com

... be reconstructed using Fourier methods. In this case the Fourier coefficients of the irregularly sampled data are retrieved by inverting the inverse Fourier operator...

Unknown

ABSTRACT: Discrimination of Maceral Composition in Crushed Coals by Fourier Grain Shape Analysis and Digitized Grain Outline Analysis

Arthur D. Cohen, Robert Ehrlich, John B. Ferm, Christopher Prince

The Society for Organic Petrology (TSOP)

.... The second grain shape analysis procedure utilized Fourier series analySIS in polar form. As utilized here, the series consisted of 23 measures ("harmonic...

1992

Comparison of EMD and S-Transform Spectral Decomposition for Characterizing Hydrocarbon Reservoir: Case Study of East Java Basin

Abdul Haris, A. M. Ustad, Didik Ardiyanto, Gadang G. Wihardy, Budiyono, Tri Bowo, Murti Widyawan

Indonesian Petroleum Association

...-frequency spectrum such as Short Time Fourier Transform (STFT), Continues Wavelet Transform (CWT) and Matching Pursuit Decomposition (MPD). However, all...

2011

Contribution of Salinas River Sand to the Beaches of Monterey Bay, California, During the 1978 Flood Period: Fourier Grain-Shape Analysis

Ross A. Clark , Robert H. Osborne

Journal of Sedimentary Research (SEPM)

... of harmonics of any two-dimensional shape using a closed-form Fourier series to any accuracy desired. With the origin placed at the center of gravity...

1982

Analysis of Spatial Order in Sandstones II: Grain Clusters, Packing Flaws, and the Small-Scale Structure of Sandstones

Christopher M. Prince, Robert Ehrlich, Yannick Anguy

Journal of Sedimentary Research (SEPM)

... York, Oxford University Press, 288 p. BLOOMFIELD, P., 1976, Fourier Analysis of Time Series: An Introduction: New York, Wiley, 258 p. CRABTREE, S.J....

1995

Abstract: Short-time Wavelet Estimation in the Homomorphic Domain; #90174 (2014)

Roberto H. Herrera and Mirko van der Baan

Search and Discovery.com

... by Ulrych (1971). The implementation was conceptually simple and elegant requiring only a forward Fourier transform, then logarithm, followed...

2014

Abstracts: A New f-p Domain Weighting Function in Minimum Weighted Norm Interpolation of Seismic Data; #90173 (2015)

Zhengsheng Yao, Mike Galbraith, and Randy Kolesar

Search and Discovery.com

... function is designed to build the interpolated energy along the desired direction. Usually, such a weighting function is built in the Fourier domain...

2015

Abstracts: The Conventional and Non-conventional Seismic Differencing; #90173 (2015)

Vanja Vracar and Robert J. Ferguson

Search and Discovery.com

... in the frequency domain, hence, equation (1) is Fourier transformed to: (2) AAPG Search and Discovery Article #90173 CSPG/CSEG/CWLS GeoConvention 2011...

2015

A Vertical Pattern of Variation in the St. Peter Sandstone--Fourier Grain Shape Analysis

James M. Mazzullo, Robert Ehrlich

Journal of Sedimentary Research (SEPM)

... spectrum." As discussed more completely by Ehrlich and Weinberg (1970), the Fourier series is estimated for each grain projection from analysis...

1980

Fractal Structure of Stylolites

Carl N. Drummond, Damon N. Sexton

Journal of Sedimentary Research (SEPM)

.... Such a space series is readily amenable to standard spectral analysis (e.g. Davis 1986). Results of Fourier analysis of the space series can be plotted...

1998

Determination of Relative Provenance Contributions in Samples of Quartz Sand Using Q-mode Factor Analysis of Fourier Grain Shape Data

Carolyn Brauer Hudson, Robert Ehrlich

Journal of Sedimentary Research (SEPM)

... projection shape of a quartz grain can be measured to a specific degree of precision using a Fourier series in closed form. A shape is characterized...

1980

Recognition of Sandstone Depositional Environment: A Grain-Shape Approach, With Example from North Padre Island: ABSTRACT

Jim Mazzullo, Donald Sims

AAPG Bulletin

... 1983 1468 1468 67 9. (September) The shapes of 8,000 fine quartz sand grains from Malaquite Beach, North Padre Island, were analyzed with the Fourier...

1983

ABSTRACT: APPLICATION OF ATTENUATED TOTAL REFLECTANCE MICROFOURIER TRANSFORM INFRARED (ATR-FTIR) ANALYSIS TO THE STUDY OF COAL MACERALS AND COAL MATURATION PROCESSES

Zhongsheng Li, Peter M. Fredericks, Llew Rintoul, Colin R. Ward

The Society for Organic Petrology (TSOP)

... 4001, Australia INTRODUCTION Fourier transform infrared (FTIR) spectroscopy has been used in the laboratory for some decades to investigate substances...

2004

Application of Fourier Transform Infra-Red Spectroscopy in Determination of Reservoir Properties

John Woods

Indonesian Petroleum Association

...Application of Fourier Transform Infra-Red Spectroscopy in Determination of Reservoir Properties John Woods IPA14-G-070 PROCEEDINGS, INDONESIAN...

2014

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)

... in terms of the brittleness indicator, fracture density and dip angle. Then, we rewrite the reflection coefficient in the form of the Fourier series...

2023

A Semi-analytical Solution of the Induced Stress Change in a Layered Reservoir Based on the Stress Formulation

Shihao Wang, Yanbin Zhang, Ouassim Khebzegga, Bin Wang, Zhe Liu, Xian-Huan Wen

Unconventional Resources Technology Conference (URTEC)

... for the machine calculation of complex Fourier series, Math. Comput. 19: 297-301 Jaeger, J., Cook, N., Zimmerman, R., 2009. Fundamentals of Rock Mechanics. Pan, E...

2022

ABSTRACT:Chemical Petrography of Macerals Utilizing the Electron Microprobe and Infrared Microspectroscopy

R.Marc Bustin and Maria Mastalerz

The Society for Organic Petrology (TSOP)

... using electron microprobe, micro-Fourier transform infrared spectroscopy (micro-FT-IR) and normal coal petrology techniques. Utilizing microphoto mosaics...

1992

Abstract: Reservoir and Fault Delineations Using Spectral Decomposition in West Patricia Field, Offshore Sarawak (Poster 2)

Mohd Khalid Jamiran

Geological Society of Malaysia (GSM)

... transpression and inversion that resulted in a series of reverse and normal faults. This was subsequently followed by a phase of structural relaxation...

2002

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