Sweep enhancers for oil recovery

J.F.M. van Santvoort, M. Golombok

Research output: Contribution to journalArticleAcademicpeer-review

10 Citations (Scopus)
118 Downloads (Pure)


The use of viscoelastic sweep improvers to overcome injected fluid diversion is assessed at the low pressure gradients associated with secondary oil production. The flow evolves from Newtonian to non-Newtonian behavior with increasing pressure gradient. Additive concentration determines this transition and controls the effectiveness of selective retardation. This is demonstrated in an experimental simulation of parallel flow in two core samples of different permeabilities. Even at pressure gradients lower than 1.0 bar/m channeling can effectively be reduced and early water breakthrough delayed. This has the potential to greatly increase ultimate oil recovery.
Original languageEnglish
Pages (from-to)173-480
Number of pages8
JournalJournal of Petroleum Exploration and Production Technology
Issue number3
Early online date30 Oct 2015
Publication statusPublished - Sept 2016


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