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The AAPG/Datapages Combined Publications Database
Showing 1,682 Results. Searched 200,619 documents.
Australia: Depth Reprocessing Rejuvenates Gippsland Basin
Peter Baillie, Paul Carter, Jarrad Grahame, Joe Zhou, Nigel Mudge, CGG
GEO ExPro Magazine
... focused on the low-frequency background trend and updated the anisotropic parameters. • Least-squares Q pre-stack depth migration was selected...
2019
South Atlantic: The Bigger Picture
Hermann Lebit, Jeff Tilton, Sriram Arasanipalai, Pascal Ollagnon
GEO ExPro Magazine
... broadband seismic domains. The north-western Albian Gap restorations of the regional tectonic imaging and Least-Squares Migration domain is an approximately...
2019
Reflection waveform inversion assisted by full-wavefield imaging
Mikhail Davydenko, Eric Verschuur
International Meeting for Applied Geoscience and Energy (IMAGE)
...-FWI), where inversion-based imaging explains the reflection data by estimating the reflectivity model. The least-squares reverse-time migration (LSRTM...
2022
Wide-Angle Seismic-Reflection and -Refraction Data from the Solomon Islands
A. K. Cooper, R. A. Wood
Circum Pacific Council Publications
... record were determined by selecting and digitizing segments of the seismic first arrivals, fitting these segments by linear least squares, and using...
1986
Pengimejan lempung samudera dengan survei geoelektrik dan seismos: Kajian kes di Banting, Selangor (IN MALAY), Geoelectric and seismic survey of alluvium structures: a case study in Banting, Selangor
Umar Hamzah, Abdul Rahim Samsudin, Mohd Shahid Ayub, Lai Kian Voon, Rahman Yaacup, Lakam Mejus
Geological Society of Malaysia (GSM)
... kepada sejumlah blok dan dengan menggunakan skema kesongsangan kuasadua-terkecil (least-squares) akan mengira keberintangan yang sesuai bagi setiap blok...
2004
Deep Dix: Enhancing interval velocity model estimation through adversarial regularization
Joseph Stitt, Robert Clapp, Biondo Biondi
International Meeting for Applied Geoscience and Energy (IMAGE)
... early and later times are given equal priority through time indexing. Thus, we can pose the objective function in this least-squares problem with two...
2023
Upside down Rayleigh-Marchenko imaging: Towards a practical exact redatuming scheme for ocean bottom acquisitions
Ning Wang, Matteo Ravasi
International Meeting for Applied Geoscience and Energy (IMAGE)
...− , f+ m (5) which can be solved by the least-squares inversion. Subsequently, the Green’s functions can be retrieved according to equation 4. Θ−xR...
2023
Geophysical Techniques in the Study of Hydrocarbon-Contaminated Soil
Umar Hamzah, Mohd Azmi Ismail, Abdul Rahim Samsudin
Geological Society of Malaysia (GSM)
... survey. automatically subdivide the subsurface into a number of blocks and then it uses a least-squares inversion scheme to determine...
2008
A field data application of RockAVO: Data-driven, direct petrophysical inversion of prestack seismic data
Miguel Corrales, Hussein Hoteit, Matteo Ravasi
International Meeting for Applied Geoscience and Energy (IMAGE)
... primarily attribute this to the use of Laplacian regularization and least-squares solvers, and future endeavors will aim to overcome this limitation...
2023
Obtaining Low Frequencies for Full Waveform Inversion by Using Augmented Physics
Eldad Haber, Eran Treister, Elliot Holtham
Petroleum Exploration Society of Australia (PESA)
... the problem of the lack of low frequencies by changing the misfit function from least squares to some other misfit. However, there is a fundamental...
2016
Geophysical Investigation Using Resistivity and GPR: A Case Study of an Oil Spill Site at Seberang Prai, Penang
Zaw Win, Umar Hamzah, Mohd Azmi Ismail, Abdul Rahim Samsudin
Geological Society of Malaysia (GSM)
... and then use a least-squares inversion scheme to determine the appropriate resistivity values for each block in 2-D. In the resistivity survey...
2011
Lower Paleozoic Stratigraphy, Depositional Systems, and Geologic History, Needle Mountains, Colorado
John A. Campbell, David A. Gonzales
Utah Geological Association
... Paper 1321–A, 54 p. York, D., 1966, Least-squares fitting of a straight line: Canadian Journal of Physics, v. 44, p. 1079–1086. York, D., 1969, Least...
1996
Improving reservoir imaging using long-offset OBN data: A case study from Conger field, Gulf of Mexico
Bin Deng, Han Su, Bharat Bonala, Jiawei Mei, Jennifer Lewis, Estefania Ortiz, Wisley Martins
International Meeting for Applied Geoscience and Energy (IMAGE)
..., the structural image of the field. Furthermore, FWI Imaging helped improve the amplitude fidelity for reservoir interpretation, where least-squares...
2023
Meeting the imaging challenges at Atlantis with high-frequency elastic FWI
Alex Hao, Chi Chen, Zhiyuan Wei, Jiawei Mei, Li Jiang, Sam Buist, Obi Egbue, Luis Lopez, Daniel Tebo
International Meeting for Applied Geoscience and Energy (IMAGE)
... the steeply dipping salt flank still suffers from poor illumination despite the improved velocity model. By employing least-squares fitting of the full...
2023
The need of elastic RTM for elastic FWI models
Hui Huang, Zedong Wu, Xue Xiao, Zhigang Zhang, Ping Wang
International Meeting for Applied Geoscience and Energy (IMAGE)
... signal-to-noise ratio (S/N) naturally, as a result of many iterations of least-squares fitting of the full wavefield data from low to high frequencies...
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
The Earths radial conductivity model derived from the latest CSES and Swarm satellite data
Mingquan Lai, Xiuyan Ren, Changchun Yin, Yunhe Liu, Bo Zhang, Yang Su
International Meeting for Applied Geoscience and Energy (IMAGE)
... coefficients 10 and 10 , we perform a robust least-squares fitting of the measured magnetic field components to the residual field on a oneday period. However...
2023
Three-dimensional joint inversion of seismic and gravity data using Gramian constraints and Gauss-Newton approach
Hao Zhu, Hongzhu Cai, Xinyu Wang, Ziang He, Lichao Liu, Xiong Xiong, Xiangyun Hu
International Meeting for Applied Geoscience and Energy (IMAGE)
... to the model. Numerically, it is more efficient and stable to solve the least-squares problems of Equation (5) as follows (Hansen, 1998): in which...
2024
AusAEM Year 1: Some aspects of quality control and calibration
Ross C. Brodie, Yusen Ley-Cooper, Ray Lockwood, David Murray
Petroleum Exploration Society of Australia (PESA)
...) profile form. We developed an iterative gradient-based least-squares regularised inversion algorithm to solve for these two calibration parameters...
2019
PS reflection-based full-waveform inversion using single-mode propagator
Yongbo Zhai, James Xu, James Rickett, Peng Wang, Xin Cheng, Denes Vigh, Suyang Chen, Cara Smith
International Meeting for Applied Geoscience and Energy (IMAGE)
...ons The simulated PS reflection data can be directly compared to the observed input data using a least-squares or alternative objective functions. However, ...
2024
Improvements on airborne gamma-ray spectrometry inversion
Jessica D. Weihermann, Yaoguo Li, Saulo P. Oliveira, Francisco J. F. Ferreira, Adalene M. Silva
International Meeting for Applied Geoscience and Energy (IMAGE)
..., notably in the represents an improvement over AGRS inversion, as ternary plots by reducing ambiguous false colors and traditional least-squares...
2024
Time-lapse matching of OBN seismic data using 2D convolutional neural networks
Ramon C. F. Araújo, Gilberto Corso, Samuel Xavier-de-Souza, João M. de Araújo, Tiago Barros
International Meeting for Applied Geoscience and Energy (IMAGE)
... by the presence of 4D noise are usually mitigated by designing filters that minimize least-squares differences between baseline and monitor data...
2024
The Value of Building a Multiscale, Regional Geomodel for Reserves Assessment of the Midland Basin
Robin Dommisse, Livia Sivila, Frank Male, H. Scott Hamlin
Unconventional Resources Technology Conference (URTEC)
... validation was used to validate the model. Without cross-validation, ML can provide unrealistically high R2 metrics. Ordinary least squares, Lasso, random...
2018
Dynamic Evolution and Overhang Development of Salt Structures in the North Louisiana Salt Basin: Quantitative Models
Kenneth Petersen , Ian Lerche , Allen Lowrie
GCAGS Transactions
... not exist an inverse procedure that is guaranteed to search a multi-dimensional set of parameters and also find the global least squares best fit...
1992
The Isotopic Age of the Flathead Sandstone (Middle Cambrian), Montana: NOTES
Sambhudas Chaudhuri, Douglas G. Brookins
Journal of Sedimentary Research (SEPM)
... method with a resultant age of 555 ± 18 m.y. and initial Sr (87/86) of 0.7183 ± 0.001 as determined by least squares analysis. A single Rb-Sr age...
1969