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The AAPG/Datapages Combined Publications Database
Showing 5,195 Results. Searched 200,626 documents.
Reservoir models selection based on volumetric and connectivity metrics
Peng Li, Dario Grana, Leonardo Azevedo
International Meeting for Applied Geoscience and Energy (IMAGE)
..., and N. Liu, 2008, Inverse theory for petroleum reservoir characterization and history matching: Cambridge University Press. Park, H., C. Scheidt, D...
2022
Least-squares reverse time migration of seismic source coding based on Shearlet transform
Yingkaer Nabi, Xiangbo Gong, Zhuo Xu
International Meeting for Applied Geoscience and Energy (IMAGE)
... the migration as an inversion problem, which can iteratively update the errors in the computed and inverse transmitted wavefields and improve the imaging...
2022
Utilizing the Two-Way Wave Equation: Reverse Time Pre-Stack Depth Migration
Matthew H. Karazincir, Clive M. Gerrard, Andrew Long, Lynn B. Comeaux
Indonesian Petroleum Association
... by k x2 , k y2 , k z2 , and inverse FFT’d back at each time step and at each grid point. In addition to the fact that the FFT based pseudo-spectral...
2008
Least-squares reverse time migration: Lessons learned from recent applications in challenging areas of the Santos Basin, Brazil
Jos Rodrigues, Felipe Duarte, Danilo Domingos, Bruno Pereira-Dias, Elionardo Pintas
International Meeting for Applied Geoscience and Energy (IMAGE)
...) (Lecomte, 2008) and its inverse can be approximated by a bank of nonstationary matching filters (Guitton, 2004). Nowadays, the image domain least-squares...
2022
Deep learning Laplace-Fourier full-waveform inversion with virtual supershot gathers
Lei Fu, Daniele Colombo, Weichang Li, Ernesto Sandoval-Curiel, Ersan Turkoglu
International Meeting for Applied Geoscience and Energy (IMAGE)
... and imaging. The conventional way to solve this illposed inverse problem is through iterative algorithms. However, it suffers issues like high...
2022
A Comparison of the Cenozoic Cover - Basement Tectonics of the Central and Eastern Cordillera of Northern Colombia
Andreas Kammer
Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)
... a stratigraphic contact against the metamorphfc basement on the eastern side of these sediments and the existence of an inverse fault on their western side. Thus...
1991
Petrophysical challenges with mudrocks in the Permian Basin: New concepts and workflows
Shuvajit Bhattacharya, Ray Eastwood, Brian Casey
International Meeting for Applied Geoscience and Energy (IMAGE)
... (Figure 2). This impacts density, photoelectric, and neutron logs. We developed and implemented unsupervised time series clustering, Toeplitz Inverse...
2022
A sliding box automatic relocation method based on geometric-mean reverse-time migration
Tong Bai, Zhendong Zhang, Malcolm C. A. White, Hongrui Qiu, Paul Williamson, Nori Nakata
International Meeting for Applied Geoscience and Energy (IMAGE)
...; Yang et al., 2018) and the PS-imaging condition becomes Figure 1: (a) Acquisition map showing two-phase stations (inverse triangles) and selected 280...
2022
Efficient physics-informed Bayesian inversion of VSP and hydrofrac data
Tian Qiao, George Turkiyah, Gerard T. Schuster
International Meeting for Applied Geoscience and Energy (IMAGE)
... of Petroleum Geologists Efficient physics-informed Bayesian inversion 4D data. For the VSP examples in this paper we initially used the analytic inverse...
2022
The Contribution of Simple Seismic Modeling for Reef Distribution Mapping
Soetomo J.A., Bambang Santoso
Indonesian Petroleum Association
.... There are two types of modeling: forward and inverse modeling. Forward modeling or direct modeling generates synthetic seismic time section based...
1985
VSP: Lessons from Numerical Simulation
M. Suprajitno, S. A. Greenhalgh
Indonesian Petroleum Association
... by an inverse Fourier transformation. In generating offset-VSP seismograms, an additional integration over the wavenumber is required before the inverse...
1985
Retrieving high-resolution acoustic impedance using full-waveform inversion in presalt reservoir setting, offshore Brazil
Akshat Abhishek, Alok K. Soni, Rene-Edouard Plessix, Martijn Blaauw, Jaydip Guha, Gautam Kumar
International Meeting for Applied Geoscience and Energy (IMAGE)
... is a step length and Bk is an approximation of the inverse of the Hessian found through the l-BFGS-b algorithm (Nocedal and Wright, 2006). INTERBED...
2022
Incorporating Secondary Information Using Direct Sequential Cosimulation
A. Soares, J. A. Almeida, L. Guerreiro
AAPG Special Volumes
... by the inverse transformation 1:This means that zs(xu) is sampled from intervals of FZ(z) defined by the local estimates z(xu)* and .Figure 1. Sampling...
2006
Seismic erratic noise suppression based on Laplacian-scaled mixture prior
Haotian Xu, Weiwei Xu, Wenchao Chen
International Meeting for Applied Geoscience and Energy (IMAGE)
... introduce the LSM distribution to describe the erratic noise, i.e. ei = ki-1i . The inverse scale parameter ki obeys a certain distribution, i.e. P...
2022
Measuring seasonal velocity variations on an urban DAS array
Jihyun Yang, Jeffrey Shragge
International Meeting for Applied Geoscience and Energy (IMAGE)
...) = F −1 un (xA , ω)un (xB , ω) , where F −1 is the inverse Fourier transform operator, n is the event window index, N is the total number of event...
2022
Equivariant imaging for self-supervised regularly undersampled seismic data interpolation
Weiwei Xu, Vincenzo Lipari, Paolo Bestagini, Politecnico di Milano, Wenchao Chen, Stefano Tubaro
International Meeting for Applied Geoscience and Energy (IMAGE)
... interpolation is to reconstruct the fully sampled seismic data m from undersampled measurement d, which is an ill-posed inverse problem. Therefore, it needs...
2022
Stratigraphy and Depositional Facies; Elephant Canyon Formation
John A. Campbell
Four Corners Geological Society
.... Wind ripples along with inverse graded wind generated laminations (Hunter, 1977), lag grains, and convolute bedding are found in these sandstone units...
1987
A strategy for acoustic impedance direct inversion in depth domain
Ruiqian Cai, Chengyu Sun, Shizhong Li
International Meeting for Applied Geoscience and Energy (IMAGE)
... seismic inverse problems are often ill-posed, the Tikhonov regularization theory is often used to obtain the stable inversion result. The inversion...
2022
Qualitative and Quantitative Processing of Side Scan Sonar Data
F.S. Dwan, A.L. Anderson, T.W.C. Hilde
Circum Pacific Council Publications
...) relative to I11V/llPa (Figure 3a). Second, the inverse time varying gain is applied to recoverthe true relative amplitude. Third, the processing gain...
1996
Q-compensated least-squares reverse time migration by considering velocity and Q perturbations
Jinli Li, Yingming Qu, Chongpeng Huang, Zhenchun Li
International Meeting for Applied Geoscience and Energy (IMAGE)
... inverse problem, a misfit function in the sense of least-squares inversion is constructed as 1 ~ 1 ~ ~ T ~ ~ ~ T ~ ~ (m ) L (m ) d L (m) d...
2022
Triangular impulse tests for stratified gravity inversion
Guibao Liu, Hua-Wei Zhou
International Meeting for Applied Geoscience and Energy (IMAGE)
..., doi: https://doi.org/10.1190/1.1444275. Ebbing, J., C. Braitenberg, and H. J. Götze, 2001, Forward and inverse modelling of gravity revealing insight...
2022
Prospecting for Iron Ore in the Bedong Area, Kedah Using Geophysical Techniques
C. Y. Lee, I. H. Abdoul-Fatah
Geological Society of Malaysia (GSM)
...~;;:;;:;;;;;:;;:;;;~;;;;=;;;:;;:;;:==~~:;;;;:::~;;;=;;~:;;:;;;:;;:;;:;;;:;;:;;-;:;;;-:;;!;:;;:;:;~-'-::;;;;;;!;;!;;!;=li III 505 653 Inverse Mod,1 ReslSlr,." y Seclion • ••• 26 2...
2002
Analysis of rank-reduction methods for filtering and interpolation
Rafael Manenti, Mauricio D. Sacchi
International Meeting for Applied Geoscience and Energy (IMAGE)
... randomly extracted rows of M. The matrix U is computed via U = C+ D R + (3) [.]+ where corresponds to the Moore-Penrose generalized inverse, or, as we...
2022
Semi-global multiparameter FWI using public cloud HPC
Henry A. Debens, David Knodel, Fabio Mancini, Darryl Harris, Mike Warner, Adrian Umpleby
International Meeting for Applied Geoscience and Energy (IMAGE)
... inversion. These challenges can be lessened by considering curvature information in the form of the inverse Hessian operator, as demonstrated by Métivier et...
2022
From Arrhenius to CO2 Storage: Part VII: Arrhenius' Greenhouse Rule for CO2
Lasse Amundsen, Martin Landrø
GEO ExPro Magazine
...) in arithmetic progression – i.e. shows linear growth. Since logarithmic and exponential functions are inverse functions, equation (1) below suggests itself...
2020