Convenient formulae for determination of relative permeability from unsteady-state fluid displacements in core plugs

Autor:	Faruk Civan, Tibor Bodi, Peter Szucs, János Tóth
Rok vydání:	2002
Předmět:	Capillary action Chemistry Mechanics Geotechnical Engineering and Engineering Geology Petroleum reservoir Physics::Fluid Dynamics Core (optical fiber) Fuel Technology Analytic element method Geotechnical engineering Two-phase flow Constant (mathematics) Relative permeability Displacement (fluid)
Zdroj:	Journal of Petroleum Science and Engineering. 36:33-44
ISSN:	0920-4105
DOI:	10.1016/s0920-4105(02)00249-8
Popis:	Convenient interpretation formulae are presented and demonstrated for determination of relative permeability from unsteady-state, two-phase fluid displacements in laboratory core tests under constant rate or pressure conditions. These formulae allow the effective processing of the after-breakthrough immiscible fluid displacement data by considering constant fluid and core properties, negligible gravity effect, and sufficiently high flow rates to overcome the capillary end-effects. The fluid mobility and characteristic parameters of immiscible displacement processes are related by means of Darcy's law and specially derived functions. Analyses of various experimental data demonstrate that the present analytic method uniquely and rapidly determines the relative permeability within the accuracies of the simplifying considerations, which may closely approximate the conditions of usual laboratory core tests.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2ef56c9d456343435fdb98475cdedec6 https://doi.org/10.1016/s0920-4105(02)00249-8 Zobrazit plný text záznamu Full Text from ScienceDirect