Empirical mode decomposition of multiphase flows in porous media:characteristic scales and speed of convergence

作     者：Nicolás Echebarrena Pablo D.Mininni Gustavo A.Moreno Nicolás Echebarrena;Pablo D.Mininni;Gustavo A.Moreno

作者机构：YPF-TechnologyEnsenadaBuenos AiresArgentina CONICETBuenos AiresArgentina Physics DepartmentIFIBASchool of Exact and Natural SciencesUniversity of Buenos AiresCONICETUniversity Campus1428 Buenos AiresArgentina 

出 版 物：《Petroleum Science》 (石油科学（英文版）)

年 卷 期：2020年第17卷第1期

页      面：153-167页

核心收录：

学科分类：0820[工学-石油与天然气工程] 08[工学] 082002[工学-油气田开发工程] 

基　　金：support from YPF-Tecnología(YTEC) support from PICT Grant No.2015-3530 

主　　题：Two-phase flow Empirical mode decomposition Viscous fingering Porous media 

摘      要：We apply a proper orthogonal decomposition(POD)to data stemming from numerical simulations of a fingering instability in a multiphase flow passing through obstacles in a porous medium,to study water injection processes in the production of hydrocarbon *** show that the time evolution of a properly defined flow correlation length can be used to identify the onset of the fingering *** of characteristic lengths for each of the modes resulting from the POD provides further information on the dynamics of the ***,using numerical simulations with different viscosity ratios,we show that the convergence of the POD depends non-trivially on whether the fingering instability develops or *** result has implications on proposed methods to decrease the dimensionality of the problem by deriving reduced dynamical systems after truncating the system’s governing equations to a few POD modes.