WELCST: engineering cost model of geothermal wells. Description and user's guide
WELCST, a FORTRAN code for estimating the effects of R and D project results upon the future cost of geothermal wells is described. The code simulates the drilling and completion of a well at 27 specific US geothermal prospects, given assumptions about well design and casing plan, formation drillability, and selected engineering and cost characteristics of today's drilling technology. The user may change many of the assumptions about engineering and cost characteristics to allow WELCST to simulate impacts of specific R and D projects on the estimated cost of wells at the prospects. An important capability of WELCST is that it simulates rates and costs of major drilling mishaps, based on drilling incident data from the Imperial Valley and Geysers geothermal fields. WELCST is capable of estimating geothermal well costs at liquid-dominated (hydrothermal) sites, vapor-dominated sites, geopressured sites, and Hot Dry Rock sites. The model can contribute to many system-optimization studies, and could be easily adapted to estimate well costs outside of the United States.
- Research Organization:
- Mitre Corp., McLean, VA (USA). METREK Div.
- DOE Contract Number:
- AC01-77ET28505
- OSTI ID:
- 5139204
- Report Number(s):
- DOE/ET/28505-T1; M-78-86
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COMPUTER CODES
W CODES
GEOTHERMAL WELLS
COST
WELL DRILLING
WELL COMPLETION
COMPUTERIZED SIMULATION
DRILL BITS
DRILLING FLUIDS
GEOTHERMAL SYSTEMS
GEYSERS GEOTHERMAL FIELD
IMPERIAL VALLEY
MATHEMATICAL MODELS
WELL CASINGS
CALIFORNIA
DRILLING
DRILLING EQUIPMENT
EQUIPMENT
GEOTHERMAL FIELDS
NORTH AMERICA
SIMULATION
USA
WELLS
WESTERN REGION
Geothermal Legacy