Opthum Design Parameters for Geothermal Power in the Fhce of Declining Well Discharges

Abstract

A project based on one well puts in sharp focus two problems of geothermal exploitation which are (a) declining discharges; (b) failure in drilling make-up wells. To overcome these adverse features, it is recommended that discharge is throttled to 2/3 its maximum horizontal value and relieved over early years of production to sustain a constant discharge. This eventually gives way to flow reduction at a decreased rate of fall. An original decline curve is employed with its effect on project economics of different rates of fall. The design is self-contained and should reduce the financial risk in funding geothermal projects.