SGP-TR-191 – Deep Geothermal Well Completions: A Review of Downhole Problems and Specialized Technology Needs

Summary

Traditionally, geothermal electric plants have been built on the edges of tectonic plates where high temperature geothermal resources are available near the surface. Recent improvements in drilling and extraction technology have enabled the creation of geothermal power plants in areas where the thermal resources lie deep under the surface. Temperatures up to 600°F and 100% aqueous environments create well completion and operating problems that are unique to even experienced petroleum engineers. This paper presents first-of-their-kind completion tools and methods in a major Australian geothermal development.