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The AAPG/Datapages Combined Publications Database

Showing 1,541 Results. Searched 200,619 documents.

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Large-scale 3D Inversion of Helicopter Electromagnetic Surveys for Oil Sands Exploration near Fort McMurray, Alberta, Canada; #41303 (2014)

Leif H. Cox, Glenn A. Wilson, Michael S. Zhdanov, Jonathan Rudd, and John Wilson

Search and Discovery.com

... and Zhdanov, 2002). For time-domain AEM, system responses and sensitivities are obtained by Fourier transform of the frequency-domain responses...

2014

Study on the Recorded Highest Paleotemperature and Thermal Maturity Evolution of the Lower Paleozoic Marine Shales in the West of Middle Yangtze Region, Central China; #50925 (2014)

Jiankun Zhang, Sheng He, Jizheng Yi, and Yuguang Hou

Search and Discovery.com

... measurements, kerogen FTIR (Fourier transform infrared spectroscopy) analysis. The results of thermo-acoustic emission experiments illustrate...

2014

Application of Visco-Acoustic Full Waveform Inversion to Shallow-Water, Shallow-Gas Data, #41802 (2016).

Xin Cheng, Ronan Petton, Ian Anstey, Wai-Leong Lai, Denes Vigh, Gavin Menzel-Jones

Search and Discovery.com

... considerations. Let from the visco-acoustic wave equation (Equation 1), after Fourier transform to the frequency domain and some algebra manipulation, without...

2016

Wavelet analysis of well-logging data from oil source rock, Egret Member, offshore eastern Canada

Andreas Prokoph, Frederik P. Agterberg

AAPG Bulletin

..., wavelet coefficients trace the variation of sedimentation rate with depth, a result that is not obtainable from a Fourier transform. Figure 2...

2000

Microchemical differentiation of conodont and scolecodont microfossils

Alison Olcott Marshall, Vincent Nowaczewski, Craig P. Marshall

PALAIOS

... the other, undergo a different thermal alteration pathway. In this study, Fourier transform infrared (FTIR) spectroscopy of scolecodont and conodont...

2013

Variability in Two Northwest Alaska Coal Deposits

John S. Youtcheff Jr., P. D. Rao, Jane E. Smith

Pacific Section SEPM

... determinations and equilibrium moisture measurements were conducted according to ASTM procedures. Fourier Transform Infrared Spectroscopy (FTIR) was used...

1987

Integration of Whole Core, Drill Cuttings, and Well Log Data for Improved Characterization in the Wolfcamp Formation

Joel D Walls, Dan Buller, Anyela Morcote, Michael L. Everts, Bryan Guzman

Unconventional Resources Technology Conference (URTEC)

... for digital rock analysis. Mineral composition was Fourier transform infrared spectroscopy (FTIR). Clays, silicates, and carbonates were normalized...

2016

X-Ray Fluorescence and Laser Induced Breakdown Spectroscopy for Advanced Rock Elemental Analysis

Heyleem Han, Son Dang, Juan C. Acosta, Jing Fu, Carl Sondergeld, Chandra Rai

Unconventional Resources Technology Conference (URTEC)

... and siderite, between calculated mineralogy results from elemental analyses and measured transmission Fourier Transform Infrared (FTIR) mineralogy. FTIR provides...

2019

Meramec Velocity Systematics

Jing Fu, Carl Sondergeld, Chandra Rai

Unconventional Resources Technology Conference (URTEC)

.... Mineralogy is measured using the transmission Fourier Transform Infrared spectroscopy (FTIR). FTIR provides a quantitative mineralogy measurement, which...

2020

CO2-Fracturing Fluid Driven Geochemical Alterations at the Shale Matrix-Fracture Interface

Sean Sanguinito, Patricia Cvetic, Barbara Kutchko, Sittichai Natesakhawat, Angela Goodman

Unconventional Resources Technology Conference (URTEC)

... understanding of the reactions that will occur between CO2, shale, and water/fracturing fluid, we use in situ Fourier Transform infrared spectroscopy, (FTIR...

2020

Automated velocity model building using Fourier neural operators

Guanghui Huang, Sean Crawley, Ramzi Djebbi, Jaime Ramos-Martinez, Nizar Chemingui

International Meeting for Applied Geoscience and Energy (IMAGE)

...Automated velocity model building using Fourier neural operators Guanghui Huang, Sean Crawley, Ramzi Djebbi, Jaime Ramos-Martinez, Nizar Chemingui...

2023

Frequency vs Azimuth (FVAZ): the Younger Member of the Family of Seismic Driven Fracture Characterization Methods

Juan Tavella, Victoria Lazzari, Marcelo Frydman, Néstor Herrera

Unconventional Resources Technology Conference (URTEC)

... angles. A Fast Fourier Transform (FFT) preceded by a Gabor Transform (Gabor, D., Theory of Communications) for resolution enhancement was used...

2023

Vector denoising of multicomponent seismic data based on quaternion weighted nuclear norm minimization

J. J. Gao, X. Wang, Y. H. Fu

International Meeting for Applied Geoscience and Energy (IMAGE)

... data denoising method by conducting a 3D shearlet transform approach. Brox and Sacchi (2022) introduced robust vector The quaternion is an extension...

2024

Understanding the causes of low frequency shadow below gas hydrates

Ayman Noor M. Qadrouh, Saad Alajmi

Petroleum Exploration Society of Australia (PESA)

... by using a direct method based on the Fourier pseudospectral method. A 1D model the LFS below the BSR is analysed, i.e. the waveform and spectrum...

2019

Self-parametrizing seismic data processing modules: An example on coherent noise suppression

Simone Re, Ran Bachrach, Massimo Clementi, Collin Wilson

International Meeting for Applied Geoscience and Energy (IMAGE)

.... The instantaneous frequency can be obtained, for instance, with short-time Fourier transforms (Stockwell et al., 1996, Wang and Orchard, 2009...

2024

Abstract: Nonstationary Predictive Deconvolution; #90172 (2014)

Gary F. Margrave, Michael P. Lamoureux

Search and Discovery.com

... domain realized in the process of a Gabor transform after localizing a signal with a temporal window and before Fourier transformation. In our...

2014

Grain-Shape Variation in the St. Peter Sandstone: A Record of Eolian and Fluvial Sedimentation of an Early Paleozoic Cratonic Sheet Sand

James M. Mazzullo, Robert Ehrlich

Journal of Sedimentary Research (SEPM)

... particle must be digitized at equal angular intervals relative to the centroid of the profile in order for the discrete closed-form Fourier transform...

1983

Sparse time-frequency representation based on Unet with domain adaptation

Yuxin Zhang, Naihao Liu, Yang Yang, Zhiguo Wang, Jinghuai Gao, Xiudi Jiang

International Meeting for Applied Geoscience and Energy (IMAGE)

.... SPARSE SHORT-TIME FOURIER TRANSFORM STFT is a widely used tool in seismic data processing, which is defined by N 2π f (n)g∗ (n − m)e− j N nk , ST FT...

2022

Anti-aliasing seismic data interpolation by dip-informed self-supervised learning

Shirui Wang, Xuqing Wu, Jiefu Chen

International Meeting for Applied Geoscience and Energy (IMAGE)

... interpolation in the Fourier transform domain: Geophysics, 68, 355–369, doi: https://doi.org/10.1190/1.1543221. Hu, Y., X. Wei, X. Wu, J. Sun, J. Chen, J. Chen...

2023

Advanced Techniques to Increase Production From Horizontal Wells and Reservoirs

Tom Arnold, Li Gao, Yongchun Tang

Oklahoma City Geological Society

... has it taken 129 years to reach the same level? The first question is much easier to answer than the second! Fourier Transform Infrared Spectroscopy...

2014

Sequential Stage Development of Crescentic Bars: Hahoterim Beach, Southeastern Mediterranean

Victor Goldsmith, Dan Bowman, Kevin Kiley

Journal of Sedimentary Research (SEPM)

... was computed for each digitized wave record, twice a day for one year, using a Fast Fourier Transform algorithm described in Clairbout (1976...

1982

Variations in Water Content in Opal-A and Opal-CT from Geyser Discharge Aprons

Rachel Day, Brian Jones

Journal of Sedimentary Research (SEPM)

... with this diagenetic transition. Electron microprobe (EMP) and micro–Fourier transform infrared (FTIR) analyses of opal-A and opal-CT collected from geyser discharge...

2008

Integrated reservoir characterization of enhanced oil recovery targets in mature basins: An example from the Tar Springs Formation, Rock Hill field, Illinois Basin, United States

Timothy C. Henderson, Kenneth D. Ridgway, Cliff T. Johnston, and Thomas A. Everett

AAPG Bulletin

... diffraction, Fourier transform infrared spectroscopy, thermogravimetric analysis, evolved gas analysis, and scanning electron microscopy, this paper...

2020

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