Temperature histories in geothermal wells: survey of rock thermomechanical properties and drilling, production, and injection case studies
Thermal and mechanical properties for geothermal formations are tabulated for a range of temperatures and stress conditions. Data was obtained from the technical literature and direct contacts with industry. Thermal properties include heat capacity, conductivity, and diffusivity. Undisturbed geothermal profiles are also presented. Mechanical properties include Youngs modulus and Poisson ratio. GEOTEMP thermal simulations of drilling, production and injection are reported for two geothermal regions, the hot dry rock area near Los Alamos and the East Mesa field in the Imperial Valley. Actual drilling, production, and injection histories are simulated. Results are documented in the form of printed GEOTEMP output and plots of temperatures versus depth, radius, and time. Discussion and interpretation of the results are presented for drilling and well completion design to determine: wellbore temperatures during drilling as a function of depth; bit temperatures over the drilling history; cement temperatures from setting to the end of drilling; and casing and formation temperatures during drilling, production, and injection.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (USA); Enertech Engineering and Research Co., Houston, TX (USA)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 6134993
- Report Number(s):
- SAND-81-7128; ON: DE81029957
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
150901* -- Geothermal Engineering-- Drilling Technology & Well Hardware
BOREHOLES
CALIFORNIA
CAVITIES
COMPUTERIZED SIMULATION
DRILL BITS
DRILLING
DRILLING EQUIPMENT
EAST MESA GEOTHERMAL FIELD
ENERGY SYSTEMS
EQUIPMENT
FLUID INJECTION
GEOLOGIC FORMATIONS
GEOTHERMAL FIELDS
GEOTHERMAL GRADIENTS
GEOTHERMAL SYSTEMS
GEOTHERMAL WELLS
Geothermal Legacy
HOT-DRY-ROCK SYSTEMS
IMPERIAL VALLEY
INJECTION WELLS
MECHANICAL PROPERTIES
MECHANICS
NORTH AMERICA
PHYSICAL PROPERTIES
POISSON RATIO
RESERVOIR ROCK
ROCK MECHANICS
SIMULATION
SPECIFIC HEAT
TEMPERATURE GRADIENTS
THERMAL CONDUCTIVITY
THERMAL DIFFUSIVITY
THERMODYNAMIC PROPERTIES
USA
WELL CASINGS
WELL COMPLETION
WELL DRILLING
WELLS
WESTERN REGION
YOUNG MODULUS