Publieke samenvatting / Public summary

Horizontal drilling ranks the highest in terms of impact on cost reduction for geothermal wells because of the excellent reservoir contact, according to a recent whitepaper by EBN . However, to drill horizontal wells or similar reservoir structures with at least comparable reservoir contact in a cost effective way, the geothermal industry needs to have access to low cost, effective, non-mechanical drilling techniques. Steel shot drilling is one of the most promising non mechanical drilling techniques that can reduce the cost of highly productive reservoir structures significantly.

The objective of this project is to prove steel shot drilling is a technical and economical viable solution to significantly reducing the costs of drilling geothermal wells per unit of energy. This is done by testing that steel shot drilling with steering works under field conditions, and to provide the necessary economical evaluations of the technology.

Korte omschrijving
The two field trials in the DEPLOI the HEAT project are to pilot the Steel Shot Drilling of Canopus Geothermal in two typical environments: 1) The drilling of a multilateral construction in hard limestone at the test site VersuchsStollen Hagerbach in Switzerland; 2) Drill the reservoir section at 1600 m depth of a production well in a typical Dutch hot water sandstone reservoir operated by Tullip Energy for a district heating project in Ede, The Netherlands. Both trials are supported by final acceptance testing at the Rijswijk Center of Sustainable Geo-energy of TNO, drilling system modelling and real time monitoring by the center of excellence on well construction at the University of Calgary and the operational expertise on directional drilling of Well Guidance. Other activities of the project concern the continuous hardware improvement derived from the learnings and verification at the RCSG of TNO. The final test is to prove the readiness of the Canopus drilling technology for unlocking many geothermal well development projects in formations ranging from naturally fractured hard rock reservoirs to sandstone, across Europe (ETH, SIL, SIG).

Technical • Show that the Directional Steel Shot Drilling technology can drill the desired structures in sandstone and limestone. Demonstrate the required directional control, good bore hole wall quality and a smooth trajectory suitable for running the required completions. Verify various well construction modelling tools so that future commercial applications of the Steel Shot Drilling Technology can be prepared properly. Operational • Reliable and efficient operational use of the Canopus Technology. Both drilling contractors, field service engineers and well engineers of the energy operator should be happy to work with the technology. Economical • Demonstrate that long horizontal structures can be drilled in sandstone and hard rock geothermal formations and that they boost hot water production. • Demonstrate operational efficiency and cost efficiency. Dissemination • Submit at least five conference papers for peer review screening and various additional public notifications. • Facilitate two dissemination workshops. Operators, service companies and equipment manufacturer will be invited to join these workshops. • The consortium will set up a public website.