Zobrazeno 1 - 10
of 28
pro vyhledávání: '"J. Torquil Smith"'
Publikováno v:
Day 3 Thu, April 28, 2022.
Objectives/Scope Steam injection in diatomite reservoirs results in permeability changes owing to fracture propagation, and compaction as a result of thermal effects and pressure changes during injection and production. The purpose of this work is to
Autor:
Seiji Nakagawa, Eric Sonnenthal, Marco Voltolini, Timothy J. Kneafsey, Sharon Borglin, J. Torquil Smith, Patrick F. Dobson
Publikováno v:
Journal of Energy Resources Technology. 143
Author(s): Dobson, PF; Kneafsey, TJ; Nakagawa, S; Sonnenthal, EL; Voltolini, M; Smith, JT; Borglin, SE | Abstract: Enhanced geothermal systems (EGS) offer the potential for a much larger energy source than conventional hydrothermal systems. Hot, low-
Publikováno v:
Journal of Geophysical Research: Solid Earth. 125
Author(s): Vasco, DW; Smith, JT; Hoversten, GM | Abstract: A coupled approach, combining the theory of rate- and state-dependent friction and methods from poroelasticity, forms the basis for a quantitative relationship between displacements and fluid
Publikováno v:
GEOPHYSICS. 74:B1-B8
Electromagnetic induction data parameterized in time dependent object intrinsic polarizabilities allow discrimination of unexploded ordnance (UXO) from false targets (scrap metal). Data from a cart-mounted system designed for discrimination of UXO wi
Publikováno v:
Journal of Applied Geophysics. 61:227-234
Equivalent dipole polarizabilities are a succinct way to summarize the inductive response of an isolated conductive body at distances greater than the scale of the body. Their estimation requires measurement of secondary magnetic fields due to curren
Autor:
H. Frank Morrison, J. Torquil Smith
Publikováno v:
GEOPHYSICS. 71:G21-G25
Spheroid responses are important as limiting cases when modeling inductive responses of isolated metallic objects such as unexploded military ordnance. The response of high-permeability ([Formula: see text] ≥ 50) conductive spheroids of moderate as
Publikováno v:
Journal of Environmental and Engineering Geophysics. 9:213-216
At early time, the time derivative of the response of isolated conductive bodies to step function excitation decays as [Formula: see text] (under a quasi-static approximation). One simple parametric form for the response with correct early time behav
Publikováno v:
Geophysical Journal International. 129:29-40
SUMMARY We describe finite-difference approximations to the equations of 2-D electromagnetic induction that permit discrete boundaries to have arbitrary geometrical relationships to the nodes. This allows finite-difference modelling with the flexibil
Autor:
J. Torquil Smith
Publikováno v:
GEOPHYSICS. 61:1319-1324
The preceding paper derives a staggered‐grid, finite‐difference approximation applicable to electromagnetic induction in the Earth. The staggered‐grid, finite‐difference approximation results in a linear system of equations [Formula: see text
Autor:
J. Torquil Smith
Publikováno v:
GEOPHYSICS. 61:1308-1318
Conservation of electric current and magnetic flux can be explicitly enforced by modeling Maxwell’s equations on a staggered grid, where the different field components are sampled at points offset relative to each other. A staggered finite‐differ