High Temperature 300°C Directional Drilling System, Including Drill Bit, Steerable Motor, and Drilling Fluid

Abstract

Geothermal energy is the cleanest form of alternative energy, because it has the least environmental impact. The United States has vast untapped geothermal energy potential; using enhanced geothermal systems (EGS) technology, geothermal wells can supply the energy consumption for the USA for 2,000 years [1]. The Department of Energy (DOE) spearheads research and innovation in tools and technologies required for successful and economical use of EGS reservoirs. Temperatures in some EGS reservoirs can exceed 300°C. This paper provides a status update and technology review for ?high temperature 300°C directional drilling system, including drill bit, steerable motor, and drilling fluid, for enhanced geothermal systems,? being developed with funding assistance from DOE (DE-EE0002782). We are close to delivery on the directional drilling systems tools. The drill bit, motor and fluid were all been developed for operation at 300°C; a complete drilling system was assembled and tested at the Baker Hughes Experimental Test Area (BETA), Oklahoma, and the drilling parameters and test results are provided.