DEPLOI the HEAT
(In progress – 2024)
The DEPLOI the HEAT consortium succesfully tested the Directional Steel Shot Drilling (DSSD) technology of Canopus during a horizontal drilling pilot at the great site of Hagerbach Test Gallery (VersuchsStollen Hagerbach AG) in Switzerland. The pilot was done last June-July. Analysis of the bore hole logging and the performance data was completed in September.
The addition of less than 0.5% vol of 1 mm steel shot particles to the drilling mud increased the rate of penetration with up to an impressive factor three. While going into steering mode! Straight sections as well as three turns were drilled. Retrofitting the DSSD system with the horizontal drilling unit of Schenk AG Heldswil was easy and worked well. The hole cleaning was good and consistent with circulation tests previously conducted at the Rijswijk Centre for Sustainable Geo-energy. A total length of 250 m was drilled.
Conclusion: The DSSD technology is ready for building the first DSSD directional drilling service unit for 6 inch bore holes at >1 km vertical depth. A pilot for that unit is scheduled in a geothermal well in The Netherlands in 2024.
More information can be found on de website of DEPLOI the HEAT.
Deploi the Heat has been subsidised through the GEOTHERMICA and JPP Smart Energy Systems Joint Call by The Netherlands Enterprise Agency (RVO) and the Swiss Federal Office of Energy (SFOE).
TKI project DEPLOI
The abrasive jet drilling technology with steel shot as the abrasive particulate material, has already been field-proven as a fast hole making method for well construction. However, the technology lacked a solution for directional control. The objective of the TKI project DEPLOI, coordinated by and executed at TNO Rijswijk Centre of Sustainable GeoEnergy, was to demonstrate the Steel Shot Drilling version of Canopus including the solution for directional control. The project was successfully completed in 2022.
The project delivered the proof of concept of a full-scale lab prototype for the directional steel shot drilling technology. The project also investigated very operational aspects and the potential heat productivity impact of DSSD-drilled multilaterals in permeable geothermal reservoirs.
The results were presented in the proceedings of the European Geothermal Congress 2022
Key findings of the TKI project DEPLOI were
- Down hole particle concentration detection and control, which are key for the steering sub functionality, work for down hole conditions. Down hole power consumption is very low and commercial down hole batteries or power generators can be used
- Productivity of three 6 inch diameter laterals in a typical Dutch sandstone reservoir boosts productivity up to a factor 3. The lower the transmissivity the higher the production improvement
- Hole cleaning, mud rheology and circulation flow rate for the small steel shot particles are the same as for normal drill cuttings
- TNO conducted drill tests at realistic field conditions in granite tight limestone, sandstone and concrete
(Planned – 2024)
The housing company Ecovillage Hannover eG (Ecovillage for short) will develop “Europe’s largest eco-village” in Hannover from the end of 2023 on a 50,000 m² site with around 37 apartment buildings and 70 tiny houses. Sustainable construction, the use of renewable energies and sufficiency in living space should contribute to maximum sustainability in the quarter.
Please find more information on the website of Ecovillage Hannover eG.
Canopus Drilling Solutions will develop novel geothermal probes and cold local heating for the tiny houses. A drilling rig is developed, in such a way that it is suitable for steel shot drilling in the Ecovillage. The innovative drilling method is tested in the Ecovillage pilot and demonstration facility, and the novel geothermal probes are characterized by measurement and the potential in Germany is determined. The aim is to validate the drilling method with the local geology and to demonstrate the expansion to geothermal probes at different trajectories.
Green Village project – Kansen voor West
(Planned – 2024)
The Netherlands wants to get rid of gas, especially if it comes from Russia. Closed Shallow Geothermal installations, contribute to the transition from gas to renewable energy sources. The innovation Canopus is working on namely the drilling of curved wells with steel shot, reduces the cost of these installations and also reduces the footprint. In this Kansen Voor West innovation project, Canopus wants to take the next step and first drill into 2-meter blocks of stone or concrete and then drill at the Green Village with an integrated system at depths of up to 300 meters. After the wells are drilled a borehole heat exchanger can be placed in the well to form the closed-loop system. Then the system can be connected to a heat network with a heat pump. The Green Village recently completed such a heat network.
After the Green Village project Canopus will take on several commercial projects. It has been calculated that the savings with curved wells are significant because fewer wells are needed and because of a smaller footprint (also see this Whitepaper Curved Wells for Shallow Geothermal Everywhere). There is interest in this solution in the Netherlands and Germany, among others.