National Research Council (IT), RWTH Aachen University (DE), Freiberg Tech University (DE), Sintef Petroleum (NO), Stiftelsen Sintef (NO)
The test site is an existing dry well in Larderello, Italy, already drilled to a depth of 2.2 km and temperature of 350 °C, which was deepened to 2.9 km depth reaching supercritical conditions.
The DESCRAMBLE project proposes to drill in continental-crust, super-critical geothermal conditions, and to test and demonstrate novel drilling techniques to control gas emissions, the aggressive environment and the high temperature/pressure expected from the deep fluids. An existing well in Larderello (Tuscany, Italy), Venelle_2, will be deepened from its present depth of 2.2 km down to 3-3.5 km.
Materials: Bottom hole assembly components, Cementing process, Drilling fluids, Well materials. Well design and control: the research will optimize new procedures, explicitly utilizing synergies with oil and gas industry. Predicting and controlling super-critical conditions: Existing simulators will be extended to the super-critical regime. Development of a new logging tool: suitable for measurement of pressure and temperature at supercritical conditions. Scientific research aspects: Seismic characterization of the supercritical region, Petrophysics and log interpretation, Geochemical monitoring and Petrology.