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Type: Conference paper
Title: Mathematical modelling of formation damage in geothermal wells due to fines migration
Author: You, Z.
Bedrikovetski, P.
Hand, M.
Citation: Proceedings of the Sixth Annual Australian Geothermal Energy Conference 2013, 2013, pp.129-134
Publisher: Geoscience Australia
Publisher Place: Australia
Issue Date: 2013
Conference Name: Australian Geothermal Energy Conference (14 Nov 2013 - 15 Nov 2013 : Brisbane, Queensland)
Statement of
Zhenjiang You, Pavel Bedrikovetsky, and Martin Hand
Abstract: A mathematical model for fines migration during exploitation of geothermal wells is developed. Governing equations in the proposed model describe the flow of water with fines towards the well accounting for particle detachment, migration and straining, which result in permeability decline and well impedance growth. The developed model for well inflow performance has been applied to the field case (geothermal reservoir B, Australia) successfully. The well impedance history obtained from model prediction and from field measurements are in good agreement, which validates the current model. The sensitivity analysis of the flow rate and the temperature reveals that increase of either the flow rate or the temperature worsens the formation damage and well impedance. Geothermal reservoirs are significantly more perceptive for fines migration induced formation damage than traditional oil and gas reservoirs, due to substantial decrease in electrostatic particle-rock attachment at elevated temperature.
Keywords: Fines migration; Geothermal well; Formation damage; Particle detachment; Particle straining; Mathematical model; Well impedance
Rights: Copyright status unknown
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Appears in Collections:Aurora harvest 7
Australian School of Petroleum publications

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