Relationship of Morphologic Variation and Environment in Recent Bolivina (Foraminiferida) from Northwestern Gulf of Mexico: ABSTRACT

Anthony C. Gary, Nancy Healy-Williams

AAPG Bulletin

..., was quantified by an automated video digitizer using closed-form Fourier series anal ses. Significant variations in shape outline components were tested...

Morphostratigraphy of Foraminifera Via Automated Image Analysis: ABSTRACT

N. Healy-Williams, L. Robbins, R. Ehrlich

AAPG Bulletin

... specimens per hour. The subsequent analysis of shape changes is via closed-form Fourier se ies and multivariate statistical techniques. Through...

COGS--Computer Oriented Geological Society: ABSTRACT

James A. Thomson

AAPG Bulletin

... statistics, interactive geophysical modeling, double-Fourier analysis, and telecommunications, among others. Future presentations will include expert systems...

Distinction of Glacial and Interglacial Cycles in Feni and Gardar Drifts, North Atlantic: ABSTRACT

Margaret R. Eggers, Robert Ehrlich

AAPG Bulletin

.... Fourier shape analysis on quartz silts, augmented by SEM, showed that each sample consists of a mixture of 3 grain populations. One grain type...

Abstract: Spatial Analysis of Fabric Elements in the Berea Sandstone through Petrographic Image Analysis, by M. B. Carr and C. A. Paschke; #90928 (1999).

Search and Discovery.com

ABSTRACT: Re-evaluation of Hydrocarbon Potentials of Eastern Part of the Chad Basin, Nigeria: An Aeromagnetic Approach, by Anakwuba, Emmanuel K.; Chinwuko, Augustine I. ; #90142 (2012)

Search and Discovery.com

Abstract: Milankovic Cycles on Mars and the Impact on Economic Exploration;

Matthew Brzostowski

Search and Discovery.com

... for periodic cycles via Fourier spectral analysis of obliquity and precession index. This analysis substantiates the 128,000 and 91,000-year cycles for Earth...

Constraining Geostatistical Reservoir Models with Seismic Attributes

Search and Discovery.com

Flow Characteristics of Oil-Water Two-Phase Seepage after Fracturing Fluid Intrusion in Tight Reservoirs

Shihao Li, Liguo Zhong, Yuxinyue Hu, Hailong Zhang, Qingxiang Lin, Jian He, Mingwei Zhang

Unconventional Resources Technology Conference (URTEC)

... of emulsion movement within pores. Furthermore, through rapid Fourier transformation from another perspective, it is observed that as the capillary...

DL-fused elastic FWI: Application to marine streamer data

Pavel Plotnitskii, Oleg Ovcharenko, Vladimir Kazei, Daniel Peter, Tariq Alkhalifah

International Meeting for Applied Geoscience and Energy (IMAGE)

... wavenumbers with wavelet synchrosqueezed transform (WSST) filter and seismic waves propagation theory. Plotnitskii et al. (2020) mapped high-frequency...

Kronecker neural networks for the win: Overcoming spectral bias for PINN-based wavefield computation

Umair bin Waheed

International Meeting for Applied Geoscience and Energy (IMAGE)

... by solving equation (1). The time-domain solution is then obtained using the inverse Fourier transform of the superposition of the single-frequency...

Multiscale (nano to mm) Porosity in the Eagle Ford Shale: Changes as a Function of Maturity

Lawrence M. Anovitz, David R. Cole, Alexander M. Swift, Julia Sheets, Harold W. Elston, Susan A. Welch, Steve J. Chipera, Ken C. Littrell, David F. Mildner, Matthew Wasbrough

Unconventional Resources Technology Conference (URTEC)

... et al. (2013a). This approach calculates the autocorrelation curve from such images, the Fourier transform of which provides a further extension...

Relating Electrical Resistivity to Permeability Using Resistor Networks

Alison Kirkby, Graham Heinson, Lars Krieger

Petroleum Exploration Society of Australia (PESA)

... self-similar fracture surfaces, which uses the inverse Fourier transform to generate fractures with power spectral density functions described...

Could the Mesoproterozoic Kyalla Formation Emerge as a Viable Gas Condensate Source Rock Reservor Play in the Beetaloo Sub-Basin?

Carl Altmann, David Close, Brenton Richards, Elizabeth Baruch, Mohinudeen Faiz, Alexander Cote

Petroleum Exploration Society of Australia (PESA)

.... FTIR (Fourier-transform infrared spectroscopy) data indicated that as much as half the traditional XRD Illite/mica peak is composed of muscovite...

Experimental Evaluation of Cement Integrity on Exposure to CO2: Application to Geostorage

Sidi Mamoudou, Mark Curtis, Son T. Dang, Chandra Rai, Carl Sondergeld

Unconventional Resources Technology Conference (URTEC)

... intrusion profiles allows us to determine flow path alteration in the cement plugs. Additional characterizations include Fourier Transform Infrared...

Front Matter: Memoir 120: Mudstone Diagenesis: Research Perspectives for Shale Hydrocarbon Reservoirs, Seals, and Source Rocks, 2019

Wayne K. Camp, Neil S. Fishman, Paul C. Hackley, Joe H. S. Macquaker, Kitty L. Milliken, Kevin G. Taylor

AAPG Special Volumes

... petrography with micro-Fourier transform infrared spectroscopy to provide a physico-chemical characterization of organic matter over a range...

Detecting Permeability Gradients in Sandstone Complexes--Quantifying the Effect of Diagenesis on Fabric

Robert Ehrlich, Mark C. Bowers, Virginia L. Riggert, Christopher M. Prince

AAPG Special Volumes

..., and by pressure solution. Prince et al. (1995) used a two-dimensional fast Fourier transform on thin-section-scale binary images to quantify the spatial...

Note on the discovery of Carboniferous amber associated with the seed fern Linopteris obliqua, Sydney Coalfield, Nova Scotia, Canada

Maria Mastalerz, Erwin L. Zodrow

Atlantic Geology

... observations and careful isolation of the amber, the samples were analyzed by the Fourier transform infrared spectroscopy (FTIR) technique. This technique has...

A Method for the Determination of Nitrogen in Clays, with Application to the Burial Diagenesis of Shales: RESEARCH METHOD PAPER

Paul A. Schroeder , Ellery D. Ingall

Journal of Sedimentary Research (SEPM)

... 1980), (2) Kjeldahl digestion and distillation (e.g., Bremmer 1965), (3) Fourier-transform infrared (FTIR) spectroscopy (e.g., Sterne et al. 1982), (4...

Ergodic Sampling: A New Data Acquisition Method to Gather More Information

Mengli Zhang, Yaoguo Li

International Meeting for Applied Geoscience and Energy (IMAGE)

... in the transform domain when sampling a signal. SRF(i, j; i0 , j0 ) = |FFF 1 I (i i0 , j j0 )| (1) where F and F 1 denote respectively the 2D Fourier...

Transitional Flow Regimes in Multi-Fractured Horizontal Wells

Shail Apte, W. J. Lee

Unconventional Resources Technology Conference (URTEC)

... regimes in a MFHW helps in better rate forecasts and better reserves estimates Nomenclature A2r 2n = Mathieu function Fourier coefficients B...

Near Surface Characterization of the Baton Rouge and Scotlandville Faults, East Baton Rouge Parish, Louisiana

Angela M. Thomas, Jeffrey A. Nunn

GCAGS Transactions

... were band pass filtered using the Fast Fourier transform trapezoidal procedure. Unless otherwise noted, the main corner frequency values...

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)

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

The Physical Consequences to Aquifer Characteristics in a Laboratory Simulation of Deep-Well Injection of Organic Chemicals

Rodney A. Crother, Matthew W. Totten

Environmental Geosciences (DEG)

.... Post-Experimental Analytical Testing Analyses of the gels that formed in the cores was performed on a fourier transform infrared spectrophotometer...

Magnetotelluric Investigation of the Pleistocene Nueces River Incised Valley, Mustang Island, Texas

Egon T. Weber, Richard Hay, James R. Garrison, Jr.

GCAGS Transactions

..., which can resolve a range of frequency components. The software then performs a Fourier transform on each channel and calculates crosspower stacks...