Advances in downhole sampling of high temperature solutions
A fluid sampler capable of sampling hot and/or deep wells has been developed at Los Alamos National Laboratory. In collaboration with Leutert Instruments, an off-the-shelf sampler design was modified to meet gas-tight and minimal chemical reactivity/contamination specifications for use in geothermal wells and deep ocean drillholes. This downhole sampler has been routinely used at temperatures up to 300{degrees}C and hole depths of greater than 5 km. We have tested this sampler in various continental wells, including Valles Caldera VC-2a and VC-2b, German KTB, Cajon Pass, and Yellowstone Y-10. Both the standard commercial and enhanced samplers have also been used to obtain samples from a range of depths in the Ocean Drilling Project's hole 504B and during recent mid-ocean ridge drilling efforts. The sampler has made it possible to collect samples at temperatures and conditions beyond the limits of other tools with the added advantage of chemical corrosion resistance.
- Research Organization:
- Los Alamos National Lab., NM (United States)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 5073344
- Report Number(s):
- LA-UR-91-2974; CONF-920135-1; ON: DE92000217
- Resource Relation:
- Conference: ETCE/severe conditions/high temperature drilling, Houston, TX (United States), 26-30 Jan 1992
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
15 GEOTHERMAL ENERGY
BOREHOLES
ENVIRONMENTAL MATERIALS
BRINES
SAMPLING
SAMPLERS
DESIGN
PERFORMANCE TESTING
CORROSION RESISTANCE
GASKETS
GEOTHERMAL FLUIDS
HYDROTHERMAL SYSTEMS
MEDIUM TEMPERATURE
SUBSURFACE ENVIRONMENTS
VALVES
VOLATILE MATTER
CAVITIES
CONTROL EQUIPMENT
ENERGY SYSTEMS
EQUIPMENT
FLOW REGULATORS
FLUIDS
GEOTHERMAL SYSTEMS
MATERIALS
MATTER
SEALS
TESTING
Geothermal Legacy
580000* - Geosciences
150300 - Geothermal Exploration & Exploration Technology