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The AAPG/Datapages Combined Publications Database
Showing 5,195 Results. Searched 200,616 documents.
Patterns of Beach-Sand Sorting and Shoreline Erosion on the Nile Delta
Omran E. Frihy, Paul D. Komar
Journal of Sedimentary Research (SEPM)
... an inverse correlation between percentages of opaque minerals and the amphibole and pyroxene contents. It will be established in the present study...
1991
Antidunes and Traction-Carpet Deposits in Deep-Water Channel Sandstones, Cretaceous, British Columbia, Canada
Koji Yagishita
Journal of Sedimentary Research (SEPM)
... inverse grading or poorly developed inverse grading. However, the fine-grained sandbeds at the top of the succession commonly display normal grading...
1994
The Use of Synthetic Sonic Logs Derived From Seismic Data in the Interpretation of Stratigraphic Variation in Cretaceous Carbonates of the North Field Area, Qatar: Chapter 14
Helena S. Aves, Daniel M. Tappmeyer
AAPG Special Volumes
.... METHODOLOGY In this study an inverse modeling technique was used to analyze interval velocity variation away from well control. The objective...
1985
Probabilistic Assessment of Tight-Gas Sands Using a Data-Driven Modeling Approach; #42148 (2017)
Emre Artun, Burak Kulga, Turgay Ertekin
Search and Discovery.com
... characteristics are provided, and (2) an inverse model to estimate reservoir/hydraulic-fracture characteristics once the initial conditions, operational...
2017
Bayesian inversion of tilt data using a machine-learned surrogate model for pressurised fractures
Saeed Salimzadeh, Dane Kasperczyk, Teeratorn Kadeethum
Australian Energy Producers Journal
... lenses, generative adversarial networks, ground surface monitoring, inverse analysis, machine learning, surrogate model, tiltmeters. Introduction...
2024
Uncertainty Analysis of the Vertical Aquitard Hydraulic Conductivity in a Leaky Aquifer System
Xun-Hong Chen
Environmental Geosciences (DEG)
... S in the aquifer as well as the vertical hydraulic conductivity K′ in the aquitard can be determined using graphical and inverse computational methods from...
1997
Formation of Oil and Gas Deposits in the Northwest Part of the West Siberian Lowland
G. P. Sverchkov
Petroleum Geology: A Digest of Russian Literature
.... The obtaining of gas condensate oils in Berezov indicates that in the West Siberian Lowland the process of inverse vaporization and condensation of oil...
1958
Advanced analysis of helicopter-borne microTEM data for seismic base of sand corrections
Ersan Turkoglu, Daniele Colombo, Ernesto Sandoval-Curiel
International Meeting for Applied Geoscience and Energy (IMAGE)
... for the base of sand (BoS). a) Synthetic model made by the juxtaposition of 1D individual models with different depth of the BoS interface, b) inverse...
2022
3D inversion of QMAGT airborne magnetic gradiometry data for susceptibility and magnetization vector models of the Thompson Nickel Belt in Manitoba, Canada
Michael Jorgensen, Michael S. Zhdanov, Brian Parsons
International Meeting for Applied Geoscience and Energy (IMAGE)
...-demagnetization, anisotropy, and remanent magnetization. The solution of the inverse problem (1) is reduced to minimization of the corresponding...
2022
Imaging the reservoir permeability from time-lapse electromagnetic data
Taqi Alyousuf, Yaoguo Li
International Meeting for Applied Geoscience and Energy (IMAGE)
... update the permeability at each inversion iteration until we reach convergence in our inverse problem. In this paper. We present only rock physics...
2022
Elastic-AdjointNet: A physics-guided deep autoencoder to overcome crosstalk effects in multiparameter full-waveform inversion
Arnab Dhara, Mrinal Sen
International Meeting for Applied Geoscience and Energy (IMAGE)
... regularization in our inverse problem. The regularization is enough to mitigate the cross-talk problem in elastic FWI and also produce good results...
2022
Early Miocene Marine Facies in the Southeastern Caliente Range, California
J. Alan Bartow
Pacific Section of AAPG
... laminae. The sand laminae may occasionally show inverse grading (fine to coarse upward). The cross-bedding indicates a predominant westward...
1973
The Morphology and Structure of Buried Impact Craters
P. Jan Cannon
Abilene Geological Society
... is governed by an inverse law - twice the distance, a quarter the force - gravity tides are governed by an inverse cube law. Twice the distance, one...
1999
Velocity estimation via model order reduction
Alexander V. Mamonov, Liliana Borcea, Josselin Garnier, Jrn Zimmerling
International Meeting for Applied Geoscience and Energy (IMAGE)
... the inverse problem of velocity estimation from time-domain reflection data recorded by an array of m sensors that can both emit and record...
2022
Seismic sparse time-frequency representation via GAN-based unsupervised learning
Youbo Lei, Yang Yang, Naihao Liu, Shengtao Wei, Jinghuai Gao, Xiudi Jiang
International Meeting for Applied Geoscience and Energy (IMAGE)
... signal into 2D TFR. For a given seismic signal f (t), its STFT and inverse STFT are calculated as N 2π f (n)g∗ (n − m)e− j N nk , ST FT (m, k) = n=1...
2022
Microcomputer Simulation of Petroleum Reservoirs
F. Soesianto, R. E. J. Soesiarto
Indonesian Petroleum Association
... here, because the inverse matrix will be full (normally of non zero elements). Therefore, the only possibility is to use as much as possible...
1984
Petrophysics of Oil Reservoirs in the Eromanga Basin, South Australia
D. I. Gravestock, E. M. Alexander
Petroleum Exploration Society of Australia (PESA)
... the origin and with the inverse slope equal to F. The two conductivity curves represent data derived at ambient temperature in the laboratory, and at some...
1989
Graph-space optimal transport-based 3D elastic FWI for near-surface seismic applications
Dmitry Borisov, Richard D. Miller, Shelby L. Peterie, Julian Ivanov, Anthony M. Hoch, Steven D. Sloan
International Meeting for Applied Geoscience and Energy (IMAGE)
... could further increase the nonlinearity of the inverse problem. To address those challenges, we exploit the potential of graph-space optimal transport...
2022
An optimal aperture crosscorrelation imaging condition for Marchenko imaging
Xiaochun Chen, Yezheng Hu, Yukai Wo, Weiping Cao, Xuri Huang
International Meeting for Applied Geoscience and Energy (IMAGE)
... conditions, crosscorrelation is easiest to implement and provides a more stable result (e.g., no need to solve inverse problem involved in MDD...
2022
An Efficient Approach for Quantifying the Uncertainty in Groundwater-model Predictions
V. A. Kelley, S. Mishra
AAPG Special Volumes
... p.Zimmerman, D. A., et al., 1998, Comparison of seven geostatistically-based inverse approaches to estimate transmissivities for modeling advective...
2006
Robust reconstruction via orthogonal matching pursuit with Fourier operators
Ji Li, Mauricio D. Sacchi
International Meeting for Applied Geoscience and Energy (IMAGE)
... the frequency slices are interpolated, we transfer the result to the time-space domain by the inverse FFT. Instead of finding the maximum wavenumber...
2022
Detailed Biostratigraphy and Paleoenvironmental Interpretation of the Naples Bluff Section
Gregg H. Blake
Pacific Section of AAPG
... Bluff section, there are faunal patterns that show that specific genera have inverse relationships, probably related to environmental parameters, e.g....
1994
A recipe for practical iterative LSRTM with synthetic and real data examples from Brazil
Valeriy Brytik, Gopal Palacharla, Rishi Bansal, Diwi Snyder, Xu Li, Young Ho Cha, Partha Routh, Inma Dura-Gomez, Dmitriy Pavlov, Carey Marcinkovich
International Meeting for Applied Geoscience and Energy (IMAGE)
... functions, Hessian estimated on distinct point diffractors) or NMF (nonstationary matching filters, Hessian estimated on the structural image itself...
2022
Porosity Calibration of Modern Porosity Logs and Old Neutron Logs, Mabee Field, Andrews and Martin Counties, Texas
Dennis W. Dull
Houston Geological Society Bulletin
... between neutron log deflection and porosity was demonstrated by Brown and Bowers (1959). They discovered that there is an inverse linear relationship...
1993
Least-squares non-stationary triangle smoothing
Reem F. Alomar, Sergey Fomel
International Meeting for Applied Geoscience and Energy (IMAGE)
...ficient filtering operation that finds numerous applications in regularizing seismic inverse problems and computing local attributes (Fomel, 2007a,b). Non...
2022