U.S. Department of EnergyOffice of Scientific and Technical Information
DC resistivity imaging using a steel cased well
Abstract
The sensitivity analysis showed that the effects of the casing resulted in a reduction of the radial extent and vertical elongation of the sensitivity pattern in the medium. The sensitivities from the pole-pole and pole-dipole arrays showed that they had nor or limited regional coverage. The dipole-dipole arrays was the best configuration to resolve the resistivity of the elements from measurements where the casing was used. It was the most flexible array and could produce different regional responds by altering the lengths and locations of the dipoles. The inversion of synthetic data indicated that images of the medium can be produced. The data were calculated from a model composing of a highly conductive cylinder embedded in a 3-layer medium. The layer could be imaged to about 5--9m away from the casing for a single hole survey while the crosshole configuration was able to reconstruct the layer accurately.
- Authors:
-
- Lawrence Livermore National Lab., CA (United States)
- Publication Date:
- OSTI Identifier:
- 80231
- Report Number(s):
- CONF-941015-
Journal ID: ISSN 1052-3812; TRN: IM9532%%359
- Resource Type:
- Conference
- Resource Relation:
- Conference: 64. annual meeting of the Society of Exploration Geophysicists and international exposition, Los Angeles, CA (United States), 23-27 Oct 1994; Other Information: PBD: 1994; Related Information: Is Part Of SEG international exposition and sixty-fourth annual meeting -- 1994 Technical program: Expanded abstracts with authors` biographies; PB: 1736 p.
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 02 PETROLEUM; 03 NATURAL GAS; IMAGE PROCESSING; ALGORITHMS; RESISTIVITY LOGGING; SENSITIVITY ANALYSIS; WELL CASINGS; ELECTRICAL PROPERTIES; OIL WELLS; NATURAL GAS WELLS; RESPONSE FUNCTIONS
Citation Formats
Schenkel, C J. DC resistivity imaging using a steel cased well. United States: N. p., 1994.
Web.
Schenkel, C J. DC resistivity imaging using a steel cased well. United States.
Schenkel, C J. 1994.
"DC resistivity imaging using a steel cased well". United States.
@article{osti_80231,
title = {DC resistivity imaging using a steel cased well},
author = {Schenkel, C J},
abstractNote = {The sensitivity analysis showed that the effects of the casing resulted in a reduction of the radial extent and vertical elongation of the sensitivity pattern in the medium. The sensitivities from the pole-pole and pole-dipole arrays showed that they had nor or limited regional coverage. The dipole-dipole arrays was the best configuration to resolve the resistivity of the elements from measurements where the casing was used. It was the most flexible array and could produce different regional responds by altering the lengths and locations of the dipoles. The inversion of synthetic data indicated that images of the medium can be produced. The data were calculated from a model composing of a highly conductive cylinder embedded in a 3-layer medium. The layer could be imaged to about 5--9m away from the casing for a single hole survey while the crosshole configuration was able to reconstruct the layer accurately.},
doi = {},
url = {https://www.osti.gov/biblio/80231},
journal = {},
issn = {1052-3812},
number = ,
volume = ,
place = {United States},
year = {Sat Dec 31 00:00:00 EST 1994},
month = {Sat Dec 31 00:00:00 EST 1994}
}