Geothermal: Duurzaam Voorne geothermal doublet

Geothermal doublet TNT-GT-01 & TNT-GT-02

Start engineering: December 2018
End execution: May 2020

Target: The Trias reservoir

Depth (AH): 2857m; 2707m
Depth (TVD): 2569m; 2490m

Project Summary

Client:Duurzaam Voorne Holding B.V.
Wells:TNT-GT-01 & TNT-GT-02
Start Engineering:December 2018
(Expected) End execution:May 2020
Target:The Trias reservoir
Result: Water
Power (thermal):approx. 15 MWTh
Depths (AH):TNT-GT-01: 2857m; TNT-GT-02: 2707m
Depths (TVD):TNT-GT-01: 2569m; TNT-GT-02: 2490m
Role of WEP:Well design, Procurement, Drilling Program, HSE documents, Drilling Management and Support
Challenges:New type of well design
New Technology:Use of corrosion resistant materials to ensure life time of the wells.

Project Description

To cope with corrosion issues without injection of corrosion inhibitor a detailed well design making use of corrosion-resistant materials was made by WEP, in close cooperation with our project partners; Hydreco Geomec, HVC, and Veegeo. WEP assisted in the procurement of well materials and prepared the drilling programs and HSE documents. Drilling of the two geothermal wells was without major problems and the installation of the GRE-lined casing was also a success. Drilling started in March 2020 and was completed in May 2020 using the DrillTec Vario Rig.