This data set contains pressure and flow measurements of the GEOREAL hydraulic injection experiment at the KTB pilot borehole (KTB-VB) in December 2023. The experiment aimed at stimulating the crystalline rock mass and monitoring induced seismicity in near real-time. However, there was no induced seismicity recorded.
During 6 to 15 November 2023 a volume of 600 m³ of fresh water was injected through a stuck packer in the cased borehole pressurizing the entire KTB-VB including the open-hole section at the depth interval of 3,850-4000 m. Flow rates ranged between 10 and 220 l/min. Flow and pressure are provided from 9 Nov onwards, when injection was nearly continuous and initial tests with the pumps were finished. Largest flow rates were achieved between 12 to 14 Nov of up to 225 l/min and wellhead pressures of 300 bar (see Figures below). There were two hydraulic pumps used, one manual pump (MCPS) for low flow rates and another named HPS for large flow rates. A data gap in the pressure data exists between 12 Nov 10 am and 12 Nov 5:56 pm.