A Comprehensive Review of Enhanced Oil Recovery Projects in Canada andRecommendations for Planning Successful Future EOR projects

摘要

A database is developed from multiple sources to comprehensively present and evaluate enhanced oilrecovery(EOR)projects in Canada.The datasets comprising of in-situ reserves,corresponding productionand EOR information of Canada and worldwide EOR projects are made publicly available on a custom-built interactive data analysis platform TIBCO Spotfire.EOR projects for light,medium and heavy oils inCanada are classified into 65 solvent flooding,6 polymer flooding and 13 Alkali-Surfactant-Polymer(ASP)flooding.Thermal methods,particularly SAGD & CSS are conducted for extra heavy oil and bitumen inoil sands.Another 31 of immiscible flooding projects are also identified.Factors contributing to successof these projects in respective fields are evaluated based on reservoir properties and EOR parameters suchas miscibility,wettability,mobility ratio,capillary number,minimum miscibility pressure.With detailedtechnical analysis,EOR screening criterion for each method is updated and validated with world EOR dataas well as Alberta oil pools data of 2019.Primary and secondary flooding projects that have potential fortertiary recovery are matched with historic EOR data to estimate future enhanced production.It has beenobserved that 257 pools currently employing water flooding have some similarities to fields that have seensuccess with EOR.Upgrading these primary or secondary projects to enhanced recovery has the potentialof increasing daily production by as much as 14%.