- Drill pad construction: Before the drilling operations can start, the ground needs to be cleared and prepared. A concrete dill pad is constructed to accommodate the heavy drilling machinery and to comply with HSE rules.
- Drilling and completion of the first well: The first well is drilled to reach the identified geothermal target. This is one of the most critical tasks (high costs, high technical/geological risks).
- Logging, testing (production and injection test) and sampling: This step provides confirmations and conclusions on the geology (proof of concept of the geological model and conceptual model), temperature, water chemistry, and if there is an aquifer that can produce brine at expected flow-rates.
- If applicable: well and/or reservoir enhancement: If the flow rates are below expectations, different techniques can be applied to stimulate the reservoir and to enhance permeability. These techniques can include chemical (acidification) and/or hydraulic stimulations to enhance fluid pathways or the drilling of a side-track to reach alternative geothermal targets in the subsurface. At the end of this step, there is another go/no-go decision point for project developers whether or not to go ahead with the project.
Related Core Services