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ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
Experimental analysis of gas condensate flow in porous media
Submission Author:
Marcelo Coelho Fernandes , RJ
Co-Authors:
Marcelo Coelho Fernandes, Paulo Hoyer, Marcio CARVALHO
Presenter: Marcelo Coelho Fernandes
doi://10.26678/ABCM.ENCIT2020.CIT20-0423
Abstract
Gas production will increase over the next years due to the increasing energy demand around the world. The global tendency looking for cleaner energies makes gas a great option due to its relative low cost and low pollution when compared to oil. During retrograde gas production, as the reservoir pressure falls, a liquid phase is formed and may block the flow path of the gas near the wellbore, decreasing the gas relative permeability. The reserve estimation and strategy for production needs to take this condensate blocking phenomena into account. Experiments applying the Pseudo-Steady State Method to evaluate how the liquid dropout affects gas production was conducted in two rock samples, a sandstone and a carbonate, in order to evaluate the effect of porous media morphology on the relative permeability of retrograde gas. The results prove that the relative permeability increased when the flow rate increased until they reached a peak and then started to drop. The condensate formation was sharper in the sandstone sample due to its more homogeneous consolidation.
Keywords
Retrograde gas, Gas condensate, relative permeability, condensate formation, core flooding
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