Deep investigation induction logging with mirror image coil arrays
Patent
·
OSTI ID:6004722
A sonde for induction logging of boreholes comprises a zero mutual inductance transmitter-receiver coil array comprising at least two coil groups that are time or frequency multiplexed. Each group comprises a coil array which is asymmetric and the coil array of one group are the mirror image of the coil array of the other group. The response of the sonde is obtained by combining the responses detected in several groups of receivers at different depths. Combination sondes, including those capable of performing both induction and sonic logging may be constructed.
- Assignee:
- Schlumberger Technology Corporation
- Patent Number(s):
- US 4472684
- OSTI ID:
- 6004722
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
440400* -- Well Logging Instrumentation
47 OTHER INSTRUMENTATION
CONTROL
DESIGN
ELECTRIC COILS
ELECTRIC LOGGING
ELECTRICAL EQUIPMENT
ELECTRONIC EQUIPMENT
EQUIPMENT
FREQUENCY CONTROL
FUNCTIONS
IMAGES
INDUCTION LOGGING
MIRRORS
MULTIPLEXERS
PROBES
RADIO EQUIPMENT
RESPONSE FUNCTIONS
SONIC LOGGING
WELL LOGGING
WELL LOGGING EQUIPMENT
47 OTHER INSTRUMENTATION
CONTROL
DESIGN
ELECTRIC COILS
ELECTRIC LOGGING
ELECTRICAL EQUIPMENT
ELECTRONIC EQUIPMENT
EQUIPMENT
FREQUENCY CONTROL
FUNCTIONS
IMAGES
INDUCTION LOGGING
MIRRORS
MULTIPLEXERS
PROBES
RADIO EQUIPMENT
RESPONSE FUNCTIONS
SONIC LOGGING
WELL LOGGING
WELL LOGGING EQUIPMENT