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Keywords: anomaly
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Proceedings Papers
Estimating remanent magnetization of Matachewan and Sudbury mafic dikes in the Abitibi greenstone belt from aeromagnetic data
Available to PurchasePublisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4072718
... estimates remanence directions of ten mafic dike anomalies in the Abitibi greenstone belt from aeromagnetic data using a magnetization vector inversion and statistical magnetic susceptibility data methodology. The average remanent magnetization is separated from total magnetization vector inversion models...
Proceedings Papers
Towards wave-equation ambient noise tomography of a landslide: The Harmalière case study
Available to PurchasePublisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4100725
... association anomaly dataset tivier Towards wave-equation ambient noise tomography of a landslide: the Harmalie`re case study Giuseppe Provenzano*, Univ. Grenoble Alpes, Gre´gory Bie`vre, Univ. Grenoble Alpes, Romain Brossier, Univ. Grenoble Alpes, Ste´phane Garambois, Univ. Grenoble Alpes, Ludovic Me...
Proceedings Papers
Unraveling the tectonic elements of the Bengal Basin through the analysis of gravity and magnetic data
Available to PurchasePublisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4101114
... anomalies using the World Gravity Model 2012 provided by Bureau Gravimetrique International (BGI). In addition, total magnetic intensity maps were derived from the gravity data. The study area was confined within the geographical boundaries of 20° to 27° N latitude and 84° to 94° E longitude. The results...
Proceedings Papers
Joint full-waveform inversion of time-lapse OBN data at Thunder Horse field
Available to PurchasePublisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4101366
... changes in the reservoir with reduced levels of noise compared to more standard techniques. inversion amplitude extraction petroleum geology economic geology geologist geological subdiscipline expanded abstract exploration geophysicist thunder horse field simon luo anomaly reservoir...
Proceedings Papers
Numerical and physical simulations of borehole resistivity logging in high-resistance formation
Available to PurchasePublisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4091887
... Identifying and clarifying electrical logging response characteristics is critical for tight reservoir prediction and fine-scale evaluation. The low resistance anomalies of array laterlog responses were observed during processing the measurements, which poses a significant challenge for log...
Proceedings Papers
Time-lapse seismic data shaping with transformer encoder neural networks
Available to PurchasePublisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4092524
.... geologist reservoir characterization exploration geophysicist time-lapse seismic data geology machine learning american association co 2 neural network transformer encoder anomaly experiment artificial intelligence applied geoscience & energy 10 monitor trace synthetic experiment...
Proceedings Papers
Frequency-dependent seismic anomalies resulting from anisotropic permeabilities in hydrocarbon-bearing fractured porous rocks
Available to PurchasePublisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4094158
... rocks. In this work, we present a numerical method which can accommodate the effects of spatially anisotropic permeability in heterogeneous fluid-bearing fractured porous rocks on the frequency-depedent dynamic seismic anomalies. The results show that fracture parameters variations lead to changing...
Proceedings Papers
Velocity model building assisted by potential field methods: A case study from the Red Sea
Available to PurchaseWilson Ibanez, Federico Ceci, Giuseppe Bancala, Andrea Sirtori, Luciana De Luca, Miquel Marin, Vivian Robertson, Briseida Palacios, David Korte
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4094226
... through both datadriven and interpretation techniques. Gravity anomalies, commonly used for salt structural interpretation, guide the model building process. Despite inherent challenges, the workflow effectively refines the velocity model, as evidenced by the validated outcomes. This approach advocates...
Proceedings Papers
Detecting radiometric outliers in airborne gamma-ray spectrometry data with isolation forest: A case study of REE-bearing rocks in central-north Brazil
Available to PurchasePublisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4094271
... reservoir characterization concentration exploration geophysicist airborne gamma-ray spectrometry data knowledge management mineralization outlier anomaly eth applied geoscience & energy 10 american association detecting radiometric outlier Detecting radiometric outliers in airborne gamma...
Proceedings Papers
Supervised vs unsupervised deep learning for time-lapse seismic repeatability enforcement
Available to PurchasePublisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4094362
... geophysicist image registration machine learning anomaly reservoir level repeatability issue Supervised vs Unsupervised Deep Learning for Time-lapse Seismic Repeatability Enforcement Son Phan*, Wenyi Hu and Aria Abubakar, SLB Summary We develop two unique deep learning algorithms to tackle...
Proceedings Papers
Characterization of seismic anomalies in Youngil Bay, Pohang, and its geological implication
Available to PurchasePublisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4094531
... We applied a seismic attribute analysis in pursuit of the characterization of two seismic anomalies: channel and polka-dot anomalies. To enhance the visibility of the physical characteristics of seismic anomalies, poststack seismic attributes we used include: local structural dip, variance...
Proceedings Papers
Airborne gamma-ray spectrometry inversion signatures of Hicks Dome area
Available to PurchasePublisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4095159
... rocks and soils with low potassium levels. These findings not only elucidate eTh anomalies associated with the Hicks Dome complex but also underscore the importance of considering elemental interrelationships for a comprehensive understanding of the geological landscape. Noteworthy anomalies in uranium...
Proceedings Papers
Defying volcanic rifted passive margin models - World class Aptian source rock proven in the Orange Basin opens Venus, Graff and Mopane equivalent future "Golden Lanes" offshore Namibia and beyond
Available to PurchasePublisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4098655
... subdiscipline inboard golden lane anomaly discovery exploration geophysicist aptian source rock rodriguez economic geology applied geoscience & energy 10 american association mopane equivalent future orange basin offshore namibia Defying volcanic rifted passive margin models - World class...
Proceedings Papers
Detecting igneous rocks in the presalt with elastic FWI
Available to PurchasePublisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4099750
... & energy 10 inversion economic geology efwi anomaly rock type reservoir characterization elastic fwi afwi velocity model detecting igneous rock expanded abstract american association imaging karine pereira Detecting igneous rocks in the pre-salt with elastic FWI Gabriel Pacheco*, Ana Araújo...
Proceedings Papers
Inversion of acoustic logs to predict secondary porosity and pore aspect ratios: Integrated with permeability and FMI images to characterize flow zones in a south Florida aquifer
Available to PurchasePublisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4100496
... reservoir characterization fracture pore aspect ratio porosity log track 3 anomaly micro-resistivity log permeability value Inversion of acoustic logs to predict secondary porosity and pore aspect ratios: integrated with permeability and FMI images to characterize flow zones in a south Florida...
Proceedings Papers
Deep Learning Enhanced Joint Inversion for Mineral Exploration Using Airborne Geophysics: Application in Decorah Area
Available to PurchasePublisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 27–September 1, 2023
Paper Number: SEG-2023-3910948
... susceptibility upstream oil & gas mineral international efficiency airborne geophysics anomaly american association mineral exploration chen dataset energy 10 inversion application exploration geophysicist scatterplot separate inversion Deep learning enhanced joint inversion for mineral...
Proceedings Papers
Looking for a simplified and generalized training set in ML applications for gravity modelling
Available to PurchasePublisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 27–September 1, 2023
Paper Number: SEG-2023-3911339
... We introduce a new idea to build a generalized training set for supervised machine learning (ML) methods aiming at gravity modelling. We build synthetic models reproducing only faults, which could be seen as the building blocks of each gravimetric anomaly. Here, we discuss preliminary results...
Proceedings Papers
Analysis of potential fields through source decomposition in hypercompact atoms
Available to PurchasePublisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 27–September 1, 2023
Paper Number: SEG-2023-3911353
... We introduce a new filtering method for both detrending and local separation of potential field anomalies. The method is based on the modelling of a set of equivalent sources with the smallest possible volume, a sort of “atoms” selected among the many possible model that satisfy the potential...
Proceedings Papers
Uncovering hidden histories through a field camp: Geophysical surveys for archaeological investigations of slavery in Ghana
Available to PurchasePublisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 27–September 1, 2023
Paper Number: SEG-2023-3910999
... applied geoscience archaeological investigation foundation anomaly Uncovering Hidden Histories through A Field Camp: Geophysical Surveys for Archaeological Investigations of Slavery in Ghana. Cyril D. Boateng1,2* and David D. Wemegah1 1Department of Physics, College of Science, Kwame Nkrumah...
Proceedings Papers
Airborne gravity gradiometry: A case study for integrated interpretation from the Upper Assam Basin in Northeast India
Available to PurchasePublisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 27–September 1, 2023
Paper Number: SEG-2023-3912203
... and the Manabum thrusts is interpreted through the geometric analysis of anomalies associated with each thrust system, providing a better broad picture of the structural tectonic framework of the basin. This study investigates anomalies associated with three convergent thrust systems and associated foreland...
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