Abstract
AbstractA model has been developed for sand production prediction in gas wells. The model is based on linear poroelasticity and brittle plasticity with a critical equivalent plastic strain as sand production initiation condition. It included effect of residual strength in the plastic zone surrounding the cavity. The model has been applied to sand formations in a gas well in offshore North West Australia. The calculated drawdown pressure is higher than that based on linear poroelasticity but lower than the predictions based on the plasticity model without including the residual strength effect previously developed.
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