Geothermal Completion Technology Life-Cycle Cost Model (GEOCOM)

Abstract

GEOCOM is a model developed to evaluate the cost effectiveness of alternative technologies used in the completion, production, and maintenance of geothermal wells. The model calculates the ratio of life cycle cost to life cycle production or injecting and thus is appropriate for evaluating the cost effectiveness of a geothermal well even when the most economically profitable well completion strategies do not result in lowest capital cost. The project to develop the GEOCOM model included the establishment of a database for studying geothermal completions and preliminary case/sensitivity studies. The code has the database built into its structure as default parameters. These parameters include geothermal resource characteristics; costs of geothermal wells, workovers, and equipment; and other data. The GEOCOM model ahs been written in ANSI (American National Standard Institute) FORTRAN 1966 version. Documentation of the model will be available in a Sandia National Laboratories repot (Anderson et. al).