Browsing by Author "Torres-Verdin, C."
Now showing items 1-8 of 8
-
A Deep Learning Approach to the Inversion of Borehole Resistivity Measurements
Shahriari, M.; Pardo, D.
; Picon, A.; Galdran, A.; Del Ser, J.; Torres-Verdin, C. (2020-04)
Borehole resistivity measurements are routinely employed to measure the electrical properties of rocks penetrated by a well and to quantify the hydrocarbon pore volume of a reservoir. Depending on the degree of geometrical ... -
Fast 2.5D Finite Element Simulations of Borehole Resistivity Measurements
Rodriguez-Rozas, A.; Pardo, D.; Torres-Verdin, C. (2018-05-29)
We develop a rapid 2.5-dimensional (2.5D) finite element method for simulation of borehole resistivity measurements in transversely isotropic (TI) media. The method combines arbitrary high-order $H^1$ - and $H$ (curl)-conforming ... -
Fast inversion of logging-while-drilling resistivity measurements acquired in multiple wells
Bakr, S.A.; Pardo, D.; Torres-Verdin, C. (2016-10)
This paper introduces a new method for the fast inversion of borehole resistivity measurements acquired in multiple wells using logging-while-drilling (LWD) instruments. There are two key novel contributions. First, we ... -
Performance of a multi-frontal parallel direct solver for hp-finite element method
Paszynski, M.; Pardo, D.; Torres-Verdin, C. (2009-12-31)
In this paper we present the performance of our parallel multi-frontal direct solver when applied to solve linear systems of equations resulting from discretizations of a hp Finite Element Method (hp-FEM). The hp-FEM ... -
Semi-analytical response of acoustic logging measurements in frequency domain
Muga, I.; Pardo, D.; Matuszyk, P.J.; Torres-Verdin, C. (2015-12-31)
This work proposes a semi-analytical method for simulation of the acoustic response of multipole eccentered sources in a fluid-filled borehole. Assuming a geometry that is invariant with respect to the azimuthal and vertical ... -
Sensitivity study of borehole-to-surface and crosswell electromagnetic measurements acquired with energized steel casing to water displacement in hydrocarbon-bearing layers
Pardo, D.; Torres-Verdin, C.; Zhang, Z. (2008-12-31)
We study the theoretical response of electromagnetically energized steel casing in the presence of subsurface variations of electrical resistivity. Casing is energized with a finite-size solenoid antenna located along the ... -
Simulation of DC dual-laterolog measurements in complex formations: A Fourier-series approach with nonorthogonal coordinates and self-adapting finite elements
Nam, M.J.; Pardo, D.; Torres-Verdin, C. (2009-12-31)
Dual laterolog (DLL) makes use of a galvanic conduction principle to focus electrical currents into rock formations, thereby minimizing shoulder and borehole effects in the measurement of formation resistivity. The tool ... -
Simulation of marine controlled source electromagnetic measurements using a parallel fourier hp-finite element method
Pardo, D.; Nam, M.J.; Torres-Verdin, C.; Hoversten, M.G.; Garay Iñ. (2011-12-31)
We introduce a new numerical method to simulate geophysical marine controlled source electromagnetic (CSEM) measurements for the case of 2D structures and finite 3D sources of electromagnetic (EM) excitation. The method ...