Abstract
Tracer survey is one of the monitoring methods for fluid flow in the reservoir. This paper reports an application of tracer survey to an oil field in Middle East and it was succeeded to increase oil production rate of the field.
Production of the field was commenced in 1975 and water injection was applied in 1984 with pattern water flooding. Field has been already matured and infill producers are drilled to keep oil production rate. However, due to long water injection history, oil was remained in patches. Sometimes, infill wells were drilled in water invaded area because evaluation of sealing faults affected to location of high oil saturation area. To reduce this uncertainty, tracer survey was conducted and monitoring results showed locations of sealing faults.
Results were incorporated with reservoir simulation model and new infill producer could be planned with confidence. New infill producer was completed successfully in 2009.
