Design of a pressure/temperature logging system for geothermal applications
Past memory logging tools have provided excellent pressure/temperature data when used in a geothermal environment, and they are easier to maintain and deploy than tools requiring an electric wireline connection to the surface. However, they are deficient since the tool operator is unaware of downhole conditions that could require changes in the logging program. Tools that make ``decisions`` based on preprogrammed scenarios can partially overcome this difficulty, and a suite of such memory tools is under development at Sandia. The first tool, which forms the basis for future instruments, measures pressure and temperature. Design considerations include a minimization of cost while insuring quality data, size compatibility with diamond-cored holes, use in holes to 425{degree}C (800{degree}F), transportability by ordinary passenger air service, and ease of operation. Prototype tools are available for evaluation by the geothermal industry.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 10143313
- Report Number(s):
- SAND-94-0949C; CONF-9404102-1; ON: DE94010079; BR: GB0103012
- Resource Relation:
- Conference: 12. geothermal program review: geothermal`s role in global climate change - impacts on the Climate Change Action Plan,San Francisco, CA (United States),25-28 Apr 1994; Other Information: PBD: [1994]
- Country of Publication:
- United States
- Language:
- English
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