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shaly-layer-distribution
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Experimental and simulation studies of the effect of vertical permeability barriers on oil recovery efficiency during solvent injection processes
, Article Energy Sources, Part A: Recovery, Utilization and Environmental Effects ; Vol. 33, issue. 20 , Nov , 2009 , p. 1889-1900 ; ISSN: 15567036 ; Farzaneh, S. A ; Kharrat, R ; Ghazanfari, M. H ; Masihi, M ; Sharif University of Technology
Abstract
Almost all of the heavy oil reservoirs contain discontinuous permeability barriers (shales) with different structures. However, the effect of shaly layer geometrical characteristics including: spacing from wells, discontinuity, orientation, shaly layers' spacing and length, and heterogeneous distribution on oil recovery factor in the presence of gravity force are not well understood. In this work, a series of solvent injection experiments were conducted on various vertical one-quarter five-spot glass micromodels, containing barriers, which were initially saturated with a heavy oil sample. The oil recovery was measured by analysis of the pictures provided continuously during the injection...