EM and IP response of a steel well casing for a four-electrode surface array. Part II: numerical results

Journal Article · Thu Aug 01 00:00:00 EDT 1985 · Geophys. Prospect.; (United States)

DOI:https://doi.org/10.1111/j.1365-2478.1985.tb00776.x· OSTI ID:6360639

Williams, J T; Wait, J R

Some numerical results for the apparent resistivity of a homogeneous half space containing a vertical steel well casing as measured by a dipole-dipole array are presented. The basic model includes the electromagnetic and induced polarization effects by allowing for frequency dependent eddy currents and an electrochemical boundary of the well casing. It is shown that the well casing produces an apparent complex resistivity response that could be mistaken for an induced polarization anomaly existing above a hydrocarbon deposit. This response of the well casing is strongly dependent on frequency.

• Research Organization: Electromagnetics Laboratory, Department of Electrical Engineering, University of Arizona, Tucson, AZ
• OSTI ID: 6360639
• Journal Information: Geophys. Prospect.; (United States), Vol. 33:5
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
03 NATURAL GAS
NATURAL GAS WELLS
INDUCED POLARIZATION LOGGING
RESISTIVITY LOGGING
OIL WELLS
WELL CASINGS
EDDY CURRENT TESTING
FREQUENCY RESPONSE TESTING
EDDY CURRENTS
ELECTRIC CONDUCTIVITY
ELECTRIC PROBES
FREQUENCY DEPENDENCE
HETEROGENEOUS EFFECTS
MATHEMATICAL MODELS
POLARIZATION
STEELS
ALLOYS
CURRENTS
ELECTRIC CURRENTS
ELECTRIC LOGGING
ELECTRICAL PROPERTIES
ELECTROMAGNETIC TESTING
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS TESTING
NONDESTRUCTIVE TESTING
PHYSICAL PROPERTIES
PROBES
TESTING
WELL LOGGING
WELLS
020200* - Petroleum- Reserves
Geology
& Exploration
030200 - Natural Gas- Reserves
Geology
& Exploration