Document Detail


Simultaneous Determination of Two-Phase Relative Permeability and Capillary Pressure of Porous Rocks from Steady-State Flow Experiments: Accounting for Gravitational Forces and Fluid Compressibility.
MedLine Citation:
PMID:  9665785     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
A methodology for simultaneously measuring two-phase relative permeability and capillary pressure of porous rock samples from steady-state flow experiments, reported by Virnovsky et al. in 1995, is considered. The method requires measuring pressure drops in individual fluid phases across a rock sample. This paper studies the role of gravitational forces, neglected in the original derivation of the method. Direct numerical simulations of steady-state vertical flow experiments, performed over a typical range of rocks and flow parameters, show that the error caused by neglecting gravitational forces in the original method, is acceptable even for extremely high ( approximately 10(-10) m2) permeability samples. Thus, if multiphase flow measurements are performed on vertical samples, the gravitational force can be neglected for estimating relative permeability and capillary pressure. An extension of this method to the case of compressible fluids is presented. Copyright 1998 Academic Press.
Authors:
Mitlin; McLennan; Green
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Publication Detail:
Type:  JOURNAL ARTICLE; JOURNAL ARTICLE    
Journal Detail:
Title:  Journal of colloid and interface science     Volume:  204     ISSN:  1095-7103     ISO Abbreviation:  J Colloid Interface Sci     Publication Date:  1998 Aug 
Date Detail:
Created Date:  1998-07-16     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0043125     Medline TA:  J Colloid Interface Sci     Country:  -    
Other Details:
Languages:  ENG     Pagination:  205-13     Citation Subset:  -    
Affiliation:
TerraTek Research, 400 Wakara Way, University Research Park, Salt Lake City, Utah, 84102
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