Výsledky vyhledávání - "Cícero Régis"

Akademický článek

Spatially Constrained 1D Inversions of Common-Midpoint Marine Controlled-Source Electromagnetic Data to Create a 3D Electrical Model

Autor: Jorlivan Lopes Correa, Cícero Régis

Publikováno v: Applied Sciences, Vol 14, Iss 23, p 11281 (2024)

The proposed 3D stitching of spatially constrained Common Midpoint (CMP) 1D inversions is a method that integrates 1D laterally constrained inversion of marine Controlled-Source Electromagnetic (CSEM) data in the CMP domain to generate a cube of resi

Externí odkaz: https://doaj.org/article/ac830aed97f743b0aec3138ff3fc76cc

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Borehole Effects on Coaxial and Coplanar Logs of Triaxial Tools in Laminated Formations with Anisotropic Shale Host

Autor: Valdelírio Silva, Cícero Régis, Paulo Carvalho

Publikováno v: Brazilian Journal of Geophysics. 40

This paper studies the borehole effect in the triaxial induction logs within sand-shale laminated models with isotropic and anisotropic shale laminae with transverse isotropy. This study compares results from a 3D Vector Finite Element program (with

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6ee9a8012a106454d25bc2281a3c35e5
https://doi.org/10.22564/brjg.v40i3.2170

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A new look at the causes of 'polarization' horns in electromagnetic well logging

Autor: Valdelirio da Silva e Silva, Paulo Roberto de Carvalho, Cícero Régis

Publikováno v: GEOPHYSICS. 85:D233-D243

So-called polarization horns appear in electromagnetic well logs when the sondes move through the interface between formations of different conductivities. Since the early 1990s, peaks in the logs have been attributed to the influence of surface char

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9a0547cbc55c0c3ffad871ec76567d64
https://doi.org/10.1190/geo2020-0163.1

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Computational cost comparison between nodal and vector finite elements in the modeling of controlled source electromagnetic data using a direct solver

Autor: Anderson Almeida da Piedade, Hilton Farias da Silva, Carlos Mateus Barriga Nunes, Cícero Régis

Publikováno v: Computers & Geosciences. 156:104901

The Finite Element method can be implemented to model geophysical electromagnetic data using one of two methodologies called Nodal and Vector Finite Elements. This paper presents a comparison between the two approaches, emphasizing memory usage and p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::49dbe3c2f4ad552657f40cc429587e11
https://doi.org/10.1016/j.cageo.2021.104901

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1D joint and laterally constrained inversion of 2D EM data using horizontal electric dipole (HED) and horizontal circular loop (HCL) sources

Autor: Daniela Melo, Cícero Régis

Publikováno v: SEG Technical Program Expanded Abstracts 2019.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9668f0d3463ded90a5e29038cfd2c1f5
https://doi.org/10.1190/segam2019-3215368.1

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Improving apparent conductivity estimation from surface magnetic dipole data

Autor: Érico Tenório França, Cícero Régis

Publikováno v: SEG Technical Program Expanded Abstracts 2019.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bcca48f75a71a463328c483959921165
https://doi.org/10.1190/segam2019-3214716.1

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A new investigation of the influence of surface charges on the 'polarization horns' in induction logs

Autor: Valdelirio da Silva e Silva, Cícero Régis, Paulo Roberto de Carvalho

Publikováno v: SEG Technical Program Expanded Abstracts 2019.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7b016d895b96f3a36e3512ad0a20d04d
https://doi.org/10.1190/segam2019-3216683.1

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Interval mineral and fluid densities estimation from well-logs: Application to the Norne Field dataset

Autor: José J. S. de Figueiredo, Carolina B. da Silva, Cícero Régis, Matias C. de Sousa

Publikováno v: Journal of Applied Geophysics. 183:104199

Formation evaluation techniques are the key to understand subsurface rocks properties from well-logs, especially those drilled in hydrocarbon exploration wells. Knowledge of the parameters related to different types of rocks is traditionally used in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b31706883f1292677891da28f7ebef3c
https://doi.org/10.1016/j.jappgeo.2020.104199

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GEMM3D: An Edge Finite Element program for 3D modeling of electromagnetic fields and sensitivities for geophysical applications

Autor: Cícero Régis, Carlos Mateus Barriga Nunes

Publikováno v: Computers & Geosciences. 139:104477

This paper presents the 3D modeling program GEMM3D (Geophysical ElectroMagnetic Modeling 3D), a Fortran program for modeling frequency domain electromagnetic responses of geophysical sources in three-dimensional models. The program is an implementati

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9d5b880de1f130129c3bc9aa70eacd8b
https://doi.org/10.1016/j.cageo.2020.104477

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