Pushing the envelope of residual oil measurement: A field case study of a new class of inter-well chemical tracers
Journal of Petroleum Science and Engineering(2018)
Abstract
The success of any improved oil recovery (IOR) project is largely dependent on how much oil is remaining to be mobilized within the targeted area of the partially depleted or mature reservoir. Partitioning tracers are generally used to measure residual oil saturation (Sor) or remaining oil saturation (ROS) in the near wellbore region via a single well chemical tracer test (SWCTT) or in an inter-well region via a partitioning inter-well tracer test (PITT). There is a limited repertoire of nonradioactive and environmentally friendly inter-well partitioning tracers for measuring ROS. A new class of environmentally friendly partitioning tracers was field tested, in a giant carbonate reservoir undergoing peripheral waterflood, for measuring ROS in inter-well regions in a depleted area.
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Key words
Tracer,Residual oil saturation,Remaining oil saturation,Inter-well chemical tracer test,IOR/EOR,Field trial or case study
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