Borehole logging tool cryostat
Patent
·
OSTI ID:5409359
A borehole logging tool and cryostat are disclosed which maintain a semiconductor detector at cryogenic temperatures. The cryostat has an elongate single-phase heat sink of solid, thermally conductive material on which the detector is removably mounted. The other end of the heat sink is arranged to receive a liquid cryogen or the cold finger of a helium refrigerator, which is removed before a logging run; the detector being maintained at cryogenic temperatures during the logging run by absorption and retention of heat in the solid, single-phase heat sink.
- Assignee:
- Schlumberger Technology Corp
- Patent Number(s):
- US 4315417
- OSTI ID:
- 5409359
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
440400* -- Well Logging Instrumentation
47 OTHER INSTRUMENTATION
ABSORPTION
BOREHOLES
CAVITIES
CONTROL EQUIPMENT
CRYOGENICS
CRYOSTATS
DESIGN
ELEMENTS
EQUIPMENT
FLUIDS
GASES
HEAT SINKS
HELIUM
MEASURING INSTRUMENTS
NONMETALS
PHYSICAL PROPERTIES
RADIATION DETECTORS
RARE GASES
SEMICONDUCTOR DETECTORS
SINKS
THERMAL CONDUCTIVITY
THERMODYNAMIC PROPERTIES
THERMOSTATS
WELL LOGGING
WELL LOGGING EQUIPMENT
47 OTHER INSTRUMENTATION
ABSORPTION
BOREHOLES
CAVITIES
CONTROL EQUIPMENT
CRYOGENICS
CRYOSTATS
DESIGN
ELEMENTS
EQUIPMENT
FLUIDS
GASES
HEAT SINKS
HELIUM
MEASURING INSTRUMENTS
NONMETALS
PHYSICAL PROPERTIES
RADIATION DETECTORS
RARE GASES
SEMICONDUCTOR DETECTORS
SINKS
THERMAL CONDUCTIVITY
THERMODYNAMIC PROPERTIES
THERMOSTATS
WELL LOGGING
WELL LOGGING EQUIPMENT