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The AAPG/Datapages Combined Publications Database
Showing 1,680 Results. Searched 200,357 documents.
Abstract: Predicting Physicochemical Properties of Upper Jurassic Circum-Arctic Crude Oil; #90063 (2007)
Search and Discovery.com
2007
Abstract: LSPSM for Pre-and Poststack Time Lapse Studies; #90187 (2014)
Abdolnaser Yousefzadeh and John C. Bancroft
Search and Discovery.com
... which may dominate the changes of the reflectivity model. The least squares prestack Kirchhoff migration (LSPSM) is performed separately on both...
2014
Obtaining near-surface equivalent Q value from uphole survey data
Chaofeng Zhao, Wei Zhang, Jiantao Tian, Liying Ren, Qing Zhang, Jianyu Zhao
International Meeting for Applied Geoscience and Energy (IMAGE)
... equivalent Q value is obtained by the least-squares method, which reduces the multiplicity of solution. The near-surface Q value obtained by this method...
2024
Abstract: Two-stage Blind Deconvolution; #90187 (2014)
Mafijul Islam Bhuiyan and Mauricio D. Sacchi
Search and Discovery.com
... (FISTA) (Beck and Teboulle, 2009) or Iterative Reweighed Least Squares (IRLS) (NeIder and Wedderburn, 1972). Notice that we need to use the l1...
2014
Assessing FWI imagings potential to tackle illumination issues and internal multiples in the Brazilian presalt
Cyril Dolymnyj, Filipe Rudrigues, Amanda Porto, Leandro Galves, Asdrubal Ovalles
International Meeting for Applied Geoscience and Energy (IMAGE)
... with acoustic modeling using FWI velocity model, (d) FWI Image, (e) Internal multiple model, (f) Least-squares RTM. The green circle highlights the area...
2022
Thermal-Analysis Technique for Source-Rock Evaluation: Quantitative Estimate of Organic Richness and Effects of Lithologic Variation: GEOLOGIC NOTES
George E. Claypool , P. Robert Reed
AAPG Bulletin
... regression based on all samples. Dashed line is nonlinear least-squares fit (power curve) computed for shale lithologies only. End_Page 610...
1976
Basin Evaluation Using Burial History Calculations: an Overview
T. M. Guidish , C. G. St. C. Kendall , I. Lerche , D. J. Toth , R. F. Yarzab
AAPG Bulletin
... least-squares techniques. An alternate phenomenological model of porosity versus depth has been proposed by Falvey and Middleton (1981...
1985
Abstract: Beyond the Dots in the Box - Microseismicity-Constrained Fracture Models for Reservoir Simulation; #90172 (2014)
Leo Eisner, Sherilyn Williams-Stroud, Andrew Hill, Peter Duncan, Mike Thornton
Search and Discovery.com
... mechanism inversion from the surface data based on a least squares inversion of the observed P-wave amplitudes recorded on the vertical component...
2014
Seismic Foldout: Quad 35 Hybrid MC3Ds: Innovative multi-parameter FWI for near field exploration
Tor Akermoen, Jeroen Hoogeveen, GEOEX MCG, Kristen Berli, Seismic Partner, Tom Rayment, Percy Mellar
GEO ExPro Magazine
... waveform inversion delivers simultaneous model-building and full wavefield least-squares imaging directly from raw data, without the need...
2023
Phase-encoded waveform inversion for multiples
Yike Liu, Bin He, Xiao-Bi Xie, Yingcai Zheng
International Meeting for Applied Geoscience and Energy (IMAGE)
.../10.1190/segam2016-13859255.1. Dai, W., X. Wang, and G. T. Schuster, 2011, Least-squares migration of multisource data with a deblurring filter: Geophysics, 76, no. 5, R135...
2022
Identification and Quantification of Parasequences Using Expectation Maximization Filter: Defining Well Log Attributes for Reservoir Characterization
Saurabh Sinha, Raj Kiran, Javier Tellez, Kurt Marfurt
Unconventional Resources Technology Conference (URTEC)
... wells in the area of interest. We then use Least- squares fit to obtain slopes of these parasequences. Furthermore, we map these slopes and compare them...
2019
Delineating buried metallic pipes using borehole magnetic data in civil engineering
Hyoungrea Rim, Mengli Zhang, Yaoguo Li
International Meeting for Applied Geoscience and Energy (IMAGE)
... it as the forward modeling. The parametric nonlinear inversion for pipe parameters is achieved by a standard nonlinear least squares fitting of the total-field...
2023
Hourly Immersed Acquisition and Processing of Magnetotelluric Method for Noise Reduction
Alida Naufalia Aribah, Ikhsan Setyawan, Hidayat
Indonesian Petroleum Association
... sections but this will fail if all sections contain outliers. The robust method proposed here uses an iterative procedure similar to reweighted least...
2018
Abstracts: Full Waveform Inversion with Total Variation Regularization; #90173 (2015)
Amsalu Y. Anagaw, Mauricio D. Sacchi
Search and Discovery.com
... (FWI) based on the least-squares principle is in general mathematically ill-posed and, therefore, regularization methods are required to obtain unique...
2015
Probing deeper: On delineating basement features to investigate fractured aquifers in a rural community
Hendratta Ali, Manika Prasad, Ahmed Ismail, Njilah Isaac Konfor, Yene Atangana Joseph-Quentin, Oluseun Adetola Sanuade, Henry M. D. Agbogun, Mbida Yem, Alice Magha
International Meeting for Applied Geoscience and Energy (IMAGE)
... using smoothnessconstrained least squares inversion technique (Loke and Barker 1996). Several the ERT profiles will be acquired near the available...
2022
Understanding The Mesozoics Beyond Basalt: A Case Study Of Sub-Basalt Imaging
S. Sengupta, S. K. Goswami, G. Menzel-Jones, B. Chowdhury, Artem Sazykin
Indonesian Petroleum Association
... on the local traveltime differences (Jiao et al. 2015; Vigh et al. 2016) to overcome the limitations of conventional least-squares FWI using a simple initial...
2020
Computer Contouring Packages: An Historical View
R. Bugry
CSPG Bulletin
... an inverse-distance-weighted least-squares fit of the nearest data points around the current centroid. The calculation is performed for all grid nodes...
1981
Accelerated augmented Lagrangian full-waveform inversion based on truncated randomized singular value decomposition
Jiahang Li, Hitoshi Mikada, Junichi Takekawa
International Meeting for Applied Geoscience and Energy (IMAGE)
... is becoming more and more mature; however, the minimization process of FWI, which uses a least-squares algorithm, still suffers from problems...
2023
Frequency-dependent reflection characteristics of single thin layer and waveform inversion
Zhengyang Kuai, Danping Cao, Chao Jin
International Meeting for Applied Geoscience and Energy (IMAGE)
... the characteristics of seismic reflection waveforms, the least squares method is used to estimate the elastic parameters and thickness of the thin...
2023
Demultiple of High Resolution P-Cable Data in the Norwegian Barents Sea An Iterative Approach
A.J. Hardwick, S. Jansen, B. Kjolhamar
Petroleum Exploration Society of Australia (PESA)
... is applied on top of the least-squares adaption result from a previous iteration, to vals. For the first time a successful produce a secondary...
2017
Specialized processing of a massive distributed acoustic sensing (DAS) 3D VSP in a producing well
Ali Sayed, Francesca Twynam, Ran Bachrach, Philippe Caprioli, Marcus Holloway, Qingsong Li, Reetam Biswas, Daniel Tebo, Sam Buist
International Meeting for Applied Geoscience and Energy (IMAGE)
... to the surface seismic image. Post-stack least-squares migration in the image domain was used to compensate for illumination effects and further improve...
2023
Latest imaging advancements in Suriname shallow waters
Jing Yang, Zhihua Sun, Zhihua Su, Bei Hu, Nicolas Chazalnoel
International Meeting for Applied Geoscience and Energy (IMAGE)
... to improve the shallow image by obtaining additional illumination from multiples through their modeling and iterative least-squares data fitting...
2023
Deep learning decomposition for null and active space estimation for thin-bed reflectivity inversion
Kristian Torres, Mauricio D. Sacchi
International Meeting for Applied Geoscience and Energy (IMAGE)
...) In other words, the solution is expressed in terms of a unique minimum norm least-squares solution (L† dε ) minus the ”inverted” noise plus the null...
2022
Abstract: Monte Carlo Markov Chain Methods in Seismic Deconvolution; #90174 (2014)
Andres Medina and Mirko van der Baan
Search and Discovery.com
... of a linear filter. Wiener filtering is one of the most commonly applied techniques for wavelet removal as it can be shown to be optimal in a least squares...
2014
Prestack Impedance Inversion Aids Interpretation, by Satinder Chopra and Ritesh Kumar Sharma; #41664 (2015).
Search and Discovery.com
2015