Field Applications of Capacitance-Resistance Models in Waterfloods: A Decade Review
By Distinguished Lecturer Morteza Sayarpour, Chevron
Application of fast, simple and yet powerful analytic tools, capacitance-resistance models (CRMs), are demonstrated with multiple field examples over last decade. Most waterfloods lend themselves to this treatment. This method which is developed but not limited to waterfloods is ideally suited for engineers who manage daily flood performance. Field cases are selected to demonstrate CRMs capabilities in different settings: a tank representation of a field, its ability to determine connectivity between the producers and injectors, and understanding flood efficiencies and optimization for the entire or a portion of a field. Significant insights about the flood performance over a short period is gained analyticaly by quantifying value of injection and impact on oil production by estimating fractions of injected fluid being directed from any injector to various producers and the time taken for an injection signal to reach a producer. Injector-to-producer connectivities are inferred directly during the course of error minimization and optimization is followed to maximize recovery. Because the method circumvents geologic modeling and saturation matching, it lends itself to frequent usage without intervention of expert modelers, fields with hundreds wells can quickly be modeled and optimized with upside potential of 5-15% incremental recovery.
Morteza Sayarpour works for Chevron as waterflood advisor in Angola. He holds PhD in reservoir engineering from University of Texas at Austin in the USA, M.S and B.S in mining engineering-exploration from University of Tehran in Iran. He has worked over 18 years in petroleum engineering and engineering geology fields combined supporting waterflood and water/gas injection optimization of over 40 assets in USA, Kazakestan, Australia, Angola, Nigeria, North Sea and Indonesia. His technical skills are in reservoir and production engineering, waterflood surveillance, performance evaluation and optimization, improved oil recovery, conformance control with background work in mining engineering, engineering geology and geotechnique. He has routinely developed and conducted reservoir engineering and cross-functional trainings over last decade, he has industrialized multiple applications focusing on waterflood and sweep optimization – several papers and patents are published under his name.
This presentation is free and open to everyone. Refreshments will be served. The external registration is only required for the following dinner.