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The AAPG/Datapages Combined Publications Database
Showing 1,541 Results. Searched 200,691 documents.
Delineation of a Produced Water Plume in Pointe Coupee Parish, Louisiana
Matthew C. Smith, Jeffrey A. Nunn
GCAGS Transactions
... (Vaughn, 1991). The bandpass filter operates by using a Fast Fourier Transform algorithm. A set of four frequencies is chosen to set the range included...
2010
Synthesis of Polymer With High Salinity and Mechanical Stability Based on Cellulosic Polymer
Agus Saiful Arifin, Aditya Kurniawan, Ryanti Sari Yuliana, Cynthia Linaya Radiman, Septoratno Siregar
Indonesian Petroleum Association
... product is characterized by Fourier Transform Infra Red (FTIR) and the rheology properties characterized by the Fann VG viscometer. Rheology properties...
2011
Time Series Analysis I
Roy E. Plotnick and Karen L. Prestegaard
Special Publications of SEPM
... for distributions that are processes could produce comparable results. Autocorrelation and Fourier analysis are closely linked mathematically...
1995
Spalled Quartz Overgrowths as a Potential Source of Silt
Stephen K. Kennedy, Fehmi Arikan
Journal of Sedimentary Research (SEPM)
... characterized using petrographic, SEM, Fourier, and oxygen isotopic composition analyses. The original Medina and Oriskany medium sand had 18O values...
1990
Effects of Tropical Weathering on Quartz Grain Shape: an Example from Northeastern Australia
Kenneth Pye , Jim Mazzullo
Journal of Sedimentary Research (SEPM)
... weathering and pedogenesis, the magnitude and rate of such changes have not been quantified. Fourier shape analysis of quartz grains from two generations...
1994
Computer Applications in an Oil-Exploration Company
D. L. Stauft
CSPG Bulletin
... resources: Operations Research, v. 14, no. 2, p. 189-209. Harbaugh, J. W., and Preston, F. W., 1965, Fourier series analysis in geology in Dotson, J. C...
1968
Size Frequency Distributions Taken From Within Sand Laminae
James T. Grace, Brian T. Grothaus, Robert Ehrlich
Journal of Sedimentary Research (SEPM)
... experimental studies and depositional process. BASUMALLICK, S., 1966, Size differentiation in a cross-stratified unit: Sedimentology, v. 6, p. 35-68...
1978
Chemostatistic allocation of shale oil production using acidic heterocompounds
Yuanjia Han, Brian Horsfield, Nicolaj Mahlstedt, and Mareike Noah
AAPG Bulletin
... negative-ion ESI(−) Fourier transform ion cyclotron resonance mass spectrometry. A total of 2 oils and 5 mixtures thereof prepared in the laboratory, 4...
2021
Quantitative Analysis of a Cyclic Peritidal Carbonate Sequence, the Middle and Upper Devonian Lost Burro Formation, Death Valley, California--A Possible Record of Milankovitch Climatic Cycles
Wan Yang , Fraka Harmsen , Michelle A. Kominz
Journal of Sedimentary Research (SEPM)
... stretched). After calibrating the gamma time unit as 18.4 ky, eight statistically significant spectral peaks on the gamma-corrected spectrum match...
1995
Integrated Quantitative Stratigraphy of the Cenomanian-Turonian Bridge Creek Limestone Member Using Evolutive Harmonic Analysis and Stratigraphic Modeling
Stephen R. Meyers , Bradley B. Sageman , Linda A. Hinnov
Journal of Sedimentary Research (SEPM)
... methodology is developed to use these signal distortions as a means to reconstruct sedimentation. The method exploits a moving-window Fourier technique...
2001
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
.... A common technique to obtain a time-frequency map is the Short Time Fourier Transform (STFT), which has time-frequency resolution resulting from...
2008
Spectral hydrology: Resolution and uncertainty in multifrequency oscillatory hydraulic tomography
Jeremy R. Patterson, Michael Cardiff
International Meeting for Applied Geoscience and Energy (IMAGE)
... by Fourier coefficients. As an example, consider a confined 2D aquifer. In the frequency domain, the groundwater flow equation becomes: The use of near...
2022
Mathematical Model of Electromagnetic Proppant Effects on Heavy Oil Production Rate
Ardina Dwi Listiani, Sudjati Rachmat
Indonesian Petroleum Association
... and sandstone slab will remain the same. 0 b. Temperature profile in and for Fourier's law of heat conduction : (3) Boundary conditions...
2015
Improved synchrosqueezing matching pursuit incorporating w-transform
Chaohe Wang, Zhaoyun Zong
International Meeting for Applied Geoscience and Energy (IMAGE)
... characterization. Typical time-frequency analysis methods comprise the short-time Fourier transform (STFT), the continuous wavelet transform (CWT), the S-transform...
2024
Climatic Forcing of Cyclic Carbonate Sedimentation During the Last 5.4 Million Years Along the West Florida Continental Margin
Steven R. Roof , Henry T. Mullins, Steven Gartner, T. C. Huang, Ed Joyce, John Prutzman, Leonard Tjalsma
Journal of Sedimentary Research (SEPM)
... averaged ± 3%. Statistical Methods The data obtained from ODP 625B contain a compound signal of cyclic sedimentation. Fourier analysis was used...
1991
Shape Sorting During Wind Transport of Quartz Silt Grains: DISCUSSION
Kenneth Pye
Journal of Sedimentary Research (SEPM)
...------------------------ that, contrary to possible expectations, more angular (as indicated by Fourier harmonics 17-21) quartz silt grains are, on average, deposited...
1994
Abstract: Color Correction for Gabor Deconvolution and Nonstationary Phase Rotation; #90171 (2013)
Peng Cheng and Gary F. Margrave
Search and Discovery.com
... ˆ | RG (τ , f ) |= a0 + a1 f + a2 f 2 , (5) in which the coefficients can be determined by a polynomial approximation of the Fourier amplitude ˆ...
2013
Abstract: Color Correction for Gabor Deconvolution and Nonstationary Phase Rotation; #90171 (2013)
Peng Cheng and Gary F. Margrave
Search and Discovery.com
... ˆ | RG (τ , f ) |= a0 + a1 f + a2 f 2 , (5) in which the coefficients can be determined by a polynomial approximation of the Fourier amplitude ˆ...
2013
Abstract: Parallel Implementation of Pre-stack Least-squares Migration for Distributed Systems; #90171 (2013)
Sam T. Kaplan
Search and Discovery.com
..., respectively, and F denotes the four-dimensional Fourier transform over x g and x s. The operators u p ( k ) and us( k ) are, respectively...
2013
Abstract: Full-Waveform Inversion of Field Data in the Foothills: Results and Challenges with Long-Offset Seismic; #90172 (2014)
Andrew J. Brenders, R. Gerhard Pratt, Sylvestre Charles
Search and Discovery.com
... itself to frequency-domain methods, since in the discrete Fourier domain, this is equivalent to using a complex-valued frequency, defined by i...
2014
Abstract: A Faster, More Accurate Gaussian Simulation; #90172 (2014)
Colin Daly, Sandra Quental, Darcy Novak
Search and Discovery.com
... to about 36 minutes for the old GSLIB based algorithm for identical results. The unconditional simulation term uses a Fast Fourier Transform based...
2014
Abstract: Event-directed Spectrum Extrapolation for Upsampling Seismic Traces; #90172 (2014)
Zhengshong Yao, Elvis Floreani
Search and Discovery.com
... spectrum component k j , i 1,2, , q (q is much less than the number of whole spectrum components) are found, then Fourier reconstruction can...
2014
Abstract: Data Interpolation by Angular Weighted MWNI; #90187 (2014)
Mark Ng and Dan Negut
Search and Discovery.com
..., minimal added cost, and yielding good results. Method Let d(x,t) be the observed input with missing data, and D(kx,ω) its corresponding 2D Fourier...
2014
Spatial Scaling of Normal Faults, A-Bomb Canyon, Arizona; #42088 (2017)
Thomas (Hal) H. Hundley, Randall Marrett
Search and Discovery.com
... regularly-s paced fractal clus ters Fourier trough −1 10 0 10 −1 length s cale (logarithmic graduations ) 10 −1 10 1 10 2 Spatial Period...
2017
Fundamentals of Heat Transport at the Edge of Steam Chambers in Cyclic Steam Stimulation and Steam-assisted Gravity Drainage
Ian D. Gates, Marya Cokar, Michael S. Kallos
AAPG Special Volumes
... gradient at the edge of the chamber and is expressed by Fourier's law:where Q is the heat-transfer rate (example unit: W), kth is the thermal conductivity...
2013