Electromagnetic modeling of oil shale retorts for remote sensing purposes
The authors report here some work on the modeling of oil shale retort for remote sensing purposes. The aim is to obtain useful information about the contents of the retort (e.g., rubble size, void ratio, etc.) by means of electromagnetic probes. In this paper, the retort is modeled by a spheroid with an average dielectric constant which depends on the void ratio. The near field due to a radiating dipole source in the vicinity of a spheroidal retort is computed using the Extended Boundary Condition Method. Numerical results are given at 4 MHz for a retort with major axis 45.7 m (150 ft), minor axis 25.1 m (82.5 ft), bulk dielectric constant 8.8 + 3.7j, and various void ratios. The results indicate that estimates of the void ratio by remote electromagnetic measurements may be feasible under favorable conditions, but many technical problems remain to be overcome before quantitative determinations are possible.
- Research Organization:
- Dept. of Physics, Clarkson College, Potsdam, NY 13676
- OSTI ID:
- 5941363
- Journal Information:
- IEEE Trans. Geosci. Remote Sens.; (United States), Journal Name: IEEE Trans. Geosci. Remote Sens.; (United States) Vol. 20:4; ISSN IGRSD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
040100 -- Oil Shales & Tar Sands-- Reserves & Exploration-- (-1989)
040401* -- Oil Shales & Tar Sands-- In Situ Methods
True & Modified
BITUMINOUS MATERIALS
BOUNDARY CONDITIONS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
CHEMICAL REACTORS
DECOMPOSITION
DISTILLATION EQUIPMENT
ELECTRICAL SURVEYS
ELECTROMAGNETIC SURVEYS
ENERGY SOURCES
EQUIPMENT
FOSSIL FUELS
FUELS
GEOPHYSICAL SURVEYS
IN-SITU PROCESSING
IN-SITU RETORTING
MATERIALS
MATHEMATICAL MODELS
OIL SHALES
PROCESSING
REMOTE SENSING
RETORTING
RETORTS
SPHEROIDS
SURVEYS