TY - GEN
T1 - Modeling Erosion in Hollow Cylinder Tests
T2 - 58th US Rock Mechanics / Geomechanics Symposium 2024, ARMA 2024
AU - Kakonitis, Panos
AU - Papaloizou, Loizos
AU - Gravanis, Elias
AU - Sarris, Ernestos
N1 - Publisher Copyright:
Copyright 2024 ARMA, American Rock Mechanics Association.
PY - 2024
Y1 - 2024
N2 - Modelling the erosional behavior of rock cores in hollow cylinder tests is a formidable task because it involves coupled hydro-mechanical processes. In a recent work of the authors, we proposed semi-analytical hydro-mechanical framework for modelling erosion at laboratory scale through the hollow cylinder test. The model was based on the kinematic formulation of classic hydro-mechanical models a lso known as volumetric sand production models. The original formulation was constructed to include variable confining stress and flowrate conditions. In this new formulation, a power law dependency of the erosion coefficient λ with stress is incorporated to investigateits dependency on the variable external radial stress boundary condition reflected on the sand production curve. This is a significant update with respect to the previous formulation that assumed a constant sand production coefficient. Results show an improved performance with respect to experimental results. This model can be used to systema tically calibrate sand production coefficients for different types of rocks.
AB - Modelling the erosional behavior of rock cores in hollow cylinder tests is a formidable task because it involves coupled hydro-mechanical processes. In a recent work of the authors, we proposed semi-analytical hydro-mechanical framework for modelling erosion at laboratory scale through the hollow cylinder test. The model was based on the kinematic formulation of classic hydro-mechanical models a lso known as volumetric sand production models. The original formulation was constructed to include variable confining stress and flowrate conditions. In this new formulation, a power law dependency of the erosion coefficient λ with stress is incorporated to investigateits dependency on the variable external radial stress boundary condition reflected on the sand production curve. This is a significant update with respect to the previous formulation that assumed a constant sand production coefficient. Results show an improved performance with respect to experimental results. This model can be used to systema tically calibrate sand production coefficients for different types of rocks.
UR - http://www.scopus.com/inward/record.url?scp=85213017147&partnerID=8YFLogxK
U2 - 10.56952/ARMA-2024-0169
DO - 10.56952/ARMA-2024-0169
M3 - Conference contribution
AN - SCOPUS:85213017147
T3 - 58th US Rock Mechanics / Geomechanics Symposium 2024, ARMA 2024
BT - 58th US Rock Mechanics / Geomechanics Symposium 2024, ARMA 2024
PB - American Rock Mechanics Association (ARMA)
Y2 - 23 June 2024 through 26 June 2024
ER -