Electronic parts for geothermal-well logging
A new report summarizes the high-temperature characteristics of commercially-available electronic components that may be usable at temperatures up to 275/sup 0/C. The data were compiled as part of a program to develop instrumentation for monitoring the conditions in geothermal wells. The report is not meant to be definitive or complete but only to indicate the general nature of available electronic products and their design and performance limitations at high temepratures. Instrument designers may find it useful as a starting place. Many of the data presented were derived from testing above the maximum temperatures recommended by manufacturers: The products tested were not designed for hightemperature applications. The electroniccomponent information covers passive devices, including capacitors, resistors, thermistors, and magnetics (transformers, windings, and core materials). Active devices include diodes (see figure), field-effect transistors, and ceramic vacuum tubes. Transducers for temperature, fluid flow, pressure, and density are listed. More complex circuits and instruments were examined, including microcircuits, power supplies, and a temperature-measuring/transmitting system. Structural components discussed include circuit boards, interconnections, wire, sockets, solder, and substrates. A section is devoted to cables and their terminations. A section on packaging materials describes adhesives, elastomers, lubricants, and metals. The packaging section also includes Dewars and cooling equipment. For each topic there is a bibliography with abstracts. Names and addresses of manufacturers are given. A separate list of references applicable to the general subject matter appears at the end of the report.
- OSTI ID:
- 5733528
- Journal Information:
- Geotherm. Energy Mag.; (United States), Vol. 11:12
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GEOTHERMAL WELLS
TEMPERATURE MEASUREMENT
WELL LOGGING EQUIPMENT
DATA TRANSMISSION SYSTEMS
BIBLIOGRAPHIES
ELECTRONIC EQUIPMENT
MANUFACTURERS
MONITORING
TRANSDUCERS
TRANSISTORS
DOCUMENT TYPES
EQUIPMENT
SEMICONDUCTOR DEVICES
WELLS
150904* - Geothermal Engineering- Geothermal Reservoir & Well Performance