FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W4322005020> ?p ?o ?g. }

• W4322005020 abstract "Hydraulic shearing of natural fractures or fault zones is a key mechanism for enhancing permeability in engineered geothermal systems (EGS) in order to extract geothermal energy from crystalline basement rocks. Shear reactivation is achieved by hydraulic stimulation in an injection borehole, involving a complex hydro-seismo-mechanical response of fractured crystalline rock. A major challenge is to predict which fractures are reactivated at which reactivation pressures, in order to efficiently design the injection protocols and create a large fracture network for sufficient fluid circulation and heat exchange.The Bedretto Underground Laboratory for Geosciences and Geoenergies (BedrettoLab) in Switzerland serves as an in situ test-bed where meso-scale hydraulic stimulation experiments are conducted to better bridge the knowledge gap between laboratory scale experiments and complex reservoir scale processes (Ma et al. 2022). The BedrettoLab is located in a 100 m long enlarged section of the Bedretto tunnel (Ticino, Switzerland), with an overburden of more than 1000 m of granite. Several characterization, monitoring, and two stimulation boreholes were drilled. One of the stimulation boreholes (referred to as ST1) is 400 m long, 45&#176;-dipping, and was equipped with a multi-packer system that partitions the borehole into 15 intervals. Before conducting two multi-stage hydraulic stimulation phases in borehole ST1, the rock volume was characterized with various geophysical logging tools, hydraulic tests, and mini-frac tests for stress measurements (Br&#246;ker and Ma 2022, Ma et al. 2022).Along the stimulation borehole, we mapped multiple clusters of sub-parallel pre-existing open fractures and fault zones that are preferentially oriented for reactivation in the estimated stress field. In this work, we compare our preceding probabilistic slip tendency and reactivation pressure estimates with the results from hydraulic stimulation experiments. The interval pressure and flowrate data from the stimulations reveal a reactivation of the natural fractures associated with an increase in injectivity. A comparison of the expected stress field around the stimulation interval with the observed reactivation pressure indicates that the fractures were likely reactivated by hydraulic shearing. The observed reactivation pressures are in the range of the preceding estimates, but a precise estimation is challenging due to the large number of input parameters, i.e. stress magnitudes and orientation, fracture orientation, pore pressure, coefficient of friction, and their uncertainties.References:Br&#246;ker, K., & Ma, X. (2022). Estimating the Least Principal Stress in a Granitic Rock Mass: Systematic Mini-Frac Tests and Elaborated Pressure Transient Analysis. Rock Mechanics and Rock Engineering. https://doi.org/10.1007/s00603-021-02743-1Ma, X., Hertrich, M., Amann, F., Br&#246;ker, K., Gholizadeh Doonechaly, N., Gischig, V., Hochreutener, R., K&#228;stli, P., Krietsch, H., Marti, M., N&#228;geli, B., Nejati, M., Obermann, A., Plenkers, K., Rinaldi, A. P., Shakas, A., Villiger, L., Wenning, Q., Zappone, A., &#8230; Giardini, D. (2022). Multi-disciplinary characterizations of the BedrettoLab -- a new underground geoscience research facility. Solid Earth, 13(2), 301&#8211;322. https://doi.org/10.5194/se-13-301-2022" @default.
• W4322005020 created "2023-02-26" @default.
• W4322005020 creator A5003422898 @default.
• W4322005020 creator A5005828475 @default.
• W4322005020 creator A5032058217 @default.
• W4322005020 creator A5053281055 @default.
• W4322005020 creator A5056852676 @default.
• W4322005020 creator A5071312224 @default.
• W4322005020 date "2023-05-15" @default.
• W4322005020 modified "2023-09-26" @default.
• W4322005020 title "Slip tendency and reactivation pressure prediction of natural fractures at the Bedretto Underground Laboratory, Switzerland" @default.
• W4322005020 doi "https://doi.org/10.5194/egusphere-egu23-8221" @default.
• W4322005020 hasPublicationYear "2023" @default.
• W4322005020 type Work @default.
• W4322005020 citedByCount "0" @default.
• W4322005020 crossrefType "posted-content" @default.
• W4322005020 hasAuthorship W4322005020A5003422898 @default.
• W4322005020 hasAuthorship W4322005020A5005828475 @default.
• W4322005020 hasAuthorship W4322005020A5032058217 @default.
• W4322005020 hasAuthorship W4322005020A5053281055 @default.
• W4322005020 hasAuthorship W4322005020A5056852676 @default.
• W4322005020 hasAuthorship W4322005020A5071312224 @default.
• W4322005020 hasConcept C111766609 @default.
• W4322005020 hasConcept C120882062 @default.
• W4322005020 hasConcept C127313418 @default.
• W4322005020 hasConcept C150560799 @default.
• W4322005020 hasConcept C151730666 @default.
• W4322005020 hasConcept C152279782 @default.
• W4322005020 hasConcept C165205528 @default.
• W4322005020 hasConcept C175551986 @default.
• W4322005020 hasConcept C183250156 @default.
• W4322005020 hasConcept C187320778 @default.
• W4322005020 hasConcept C2777201227 @default.
• W4322005020 hasConcept C2779096232 @default.
• W4322005020 hasConcept C35817400 @default.
• W4322005020 hasConcept C41625074 @default.
• W4322005020 hasConcept C54355233 @default.
• W4322005020 hasConcept C548895740 @default.
• W4322005020 hasConcept C5900021 @default.
• W4322005020 hasConcept C78762247 @default.
• W4322005020 hasConcept C8058405 @default.
• W4322005020 hasConcept C81803558 @default.
• W4322005020 hasConcept C86803240 @default.
• W4322005020 hasConceptScore W4322005020C111766609 @default.
• W4322005020 hasConceptScore W4322005020C120882062 @default.
• W4322005020 hasConceptScore W4322005020C127313418 @default.
• W4322005020 hasConceptScore W4322005020C150560799 @default.
• W4322005020 hasConceptScore W4322005020C151730666 @default.
• W4322005020 hasConceptScore W4322005020C152279782 @default.
• W4322005020 hasConceptScore W4322005020C165205528 @default.
• W4322005020 hasConceptScore W4322005020C175551986 @default.
• W4322005020 hasConceptScore W4322005020C183250156 @default.
• W4322005020 hasConceptScore W4322005020C187320778 @default.
• W4322005020 hasConceptScore W4322005020C2777201227 @default.
• W4322005020 hasConceptScore W4322005020C2779096232 @default.
• W4322005020 hasConceptScore W4322005020C35817400 @default.
• W4322005020 hasConceptScore W4322005020C41625074 @default.
• W4322005020 hasConceptScore W4322005020C54355233 @default.
• W4322005020 hasConceptScore W4322005020C548895740 @default.
• W4322005020 hasConceptScore W4322005020C5900021 @default.
• W4322005020 hasConceptScore W4322005020C78762247 @default.
• W4322005020 hasConceptScore W4322005020C8058405 @default.
• W4322005020 hasConceptScore W4322005020C81803558 @default.
• W4322005020 hasConceptScore W4322005020C86803240 @default.
• W4322005020 hasLocation W43220050201 @default.
• W4322005020 hasOpenAccess W4322005020 @default.
• W4322005020 hasPrimaryLocation W43220050201 @default.
• W4322005020 hasRelatedWork W2022797858 @default.
• W4322005020 hasRelatedWork W2300618827 @default.
• W4322005020 hasRelatedWork W2354373309 @default.
• W4322005020 hasRelatedWork W2357207295 @default.
• W4322005020 hasRelatedWork W2922887039 @default.
• W4322005020 hasRelatedWork W3067445735 @default.
• W4322005020 hasRelatedWork W3176958286 @default.
• W4322005020 hasRelatedWork W4244093355 @default.
• W4322005020 hasRelatedWork W4322005020 @default.
• W4322005020 hasRelatedWork W9446310 @default.
• W4322005020 isParatext "false" @default.
• W4322005020 isRetracted "false" @default.
• W4322005020 workType "article" @default.