Modeling Erosion in Hollow Cylinder Tests: The Case of Low Pressure Under Variable Confining Stress

Panos Kakonitis, Loizos Papaloizou, Elias Gravanis, Ernestos Sarris

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

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.

Original languageEnglish
Title of host publication58th US Rock Mechanics / Geomechanics Symposium 2024, ARMA 2024
PublisherAmerican Rock Mechanics Association (ARMA)
ISBN (Electronic)9798331305086
DOIs
Publication statusPublished - 2024
Event58th US Rock Mechanics / Geomechanics Symposium 2024, ARMA 2024 - Golden, United States
Duration: 23 Jun 202426 Jun 2024

Publication series

Name58th US Rock Mechanics / Geomechanics Symposium 2024, ARMA 2024

Conference

Conference58th US Rock Mechanics / Geomechanics Symposium 2024, ARMA 2024
Country/TerritoryUnited States
CityGolden
Period23/06/2426/06/24

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