Towards a Nonlinear Transfer Function in Dual Porosity Models

N. Andrianov, H.M. Nick

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

Traditional matrix-fractures transfer functions in dual porosity models are linear function of the pressure difference between averaged matrix and fractures pressures, which can lead to inaccuracies in resolution of intermediate-time behaviour. We address this issue by constructing nonlinear transfer functions which match the late-time asymptotics of the linear transfer functions, but provide a better match to fine-scale results for large values of the difference between averaged matrix and fractures pressures.
The proposed transfer functions are obtained by a nonlinear fit to dimensionless single-phase fine-scale matrix-fracture fluxes as a function of the matrix-fracture pressure difference. We demonstrate that the the coarse scale dual porosity/dual permeability results using the nonlinear transfer function lie closer to the reference fine scale solution as compared to the linear model.
Original languageEnglish
Title of host publication Conference Proceedings, 82nd EAGE Annual Conference & Exhibition
Number of pages5
Volume2020
PublisherEuropean Association of Geoscientists and Engineers
Publication date2020
Edition1
DOIs
Publication statusPublished - 2020
Event82nd EAGE Annual Conference & Exhibition - Amsterdam, Netherlands
Duration: 14 Jun 202117 Jun 2021
Conference number: 82

Conference

Conference82nd EAGE Annual Conference & Exhibition
Number82
Country/TerritoryNetherlands
CityAmsterdam
Period14/06/202117/06/2021

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