Evaluation of a Geothermal Well, Logging, DST and Pit Test

Abstract

This paper briefly discusses logging and testing operations and certain related physical aspects in geothermal well evaluations.

A good understanding of thermal and hydrological characteristics of geothermal reservoirs are essential in geothermal well evaluations. Within geothermal reservoirs, in evaluating the wells, the two most important parameters that first could be estimated, then measured or calculated, are temperature and productivity. of measuring formation temperatures. are means of determining formation productivity.

Geochemistry and Petrology are currently accepted as two evaluation yardsticks in geothermal well evaluations. Investigations of cuttings and cores during drilling operations, along with studies on formation waters could be used in a predictive nature for temperature and productivity and could yield useful information on the resource.