Tu Deh-Kah Geothermal Development

Fort Nelson, British Columbia, Canada
Fort Nelson First Nation

RESPEC is the prime subsurface science and engineering contractor to the Tu Deh-Kah geothermal project in British Columbia (tudehkah.com). We worked with Barkley Project Group to help the Fort Nelson First Nation secure the initial grant of $49 million from Natural Resources Canada to kick off this invocative geothermal power project in 2018. RESPEC began work in 2019 on the initial feasibility study by creating a geothermal-resource conceptual model; performing a preliminary analytical well-performance modelling and numerical reservoir simulation; and determining the plan for the reservoir characterization, well drilling, and testing.

Phase 3 of the project began in 2021. RESPEC participated in well targeting and design for a full-size production well and temporary injection well to characterize and test the reservoir. Both wells were successfully drilled and completed in 2021 under RESPEC’s recommendation and oversight. We designed a long-term, well-flow loop test and sampling program that was implemented in the fourth quarter of 2021 and an additional long-term flow test that was implemented in 2022. RESPEC is currently undertaking detailed reservoir simulation, well-test analysis, and final well design to support well targeting and design, surface facility design, and project financing.

1. Preliminary Reconnaissance and Surface Exploration
2. Drilling Exploration
3. Feasibility Study
4. Well Drilling, Resource Production, and Power Plant and Transmission Line Construction