A Simulator for Sensitivity Analysis of Geothermal Well Cost--Recent Results
- Key words
- Drilling; Economics; Costs; Model; USA; Drill Bit; PDC; Bit Cost; Bit Life; Penetration Rate; Computer Model; Technology Sensitivity; US DOE; BDM; Sandia
- Conference
- Geothermal Resources Council Transactions
- Year
- 1979
- Session
- Computer modeling; Drilling; Economics; Drill bits
- Language
- English
Abstract
A computer based simulator for geothermal drilling has been developed at Sandia Laboratories to assess the value of new geothermal drilling technology. This paper presents the results of an analysis of diamond compact drill bits when applied to drilling in three geothermal areas: the Geysers, CA; Cove Fort Sulpherdale, UT; and the Baca location in New Mexico. The parameters of rate of penetration, bit cost, and bit life were examined to determine the performance required for cost reductions to be achieved. The analysis indicated that substantial savings may be realized when long bit runs are possible. Technology which will reduce the cost and time of frequent drilling contingencies and/or reduce bit cost will make high performance bits more attractive.
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