oa Reservoir Delineation Using Natural Geotracers

A new set of geochemical tracers have been developed for inter-well fluid characterization and reservoir delineation. The tool is especially useful in reservoirs where geological, geochemical or engineering data do not provide adequate resolution to discriminate fluid units or compartments – a must for reserves booking, field development and depletion plans. When deployed in conjunction with available data in the area of interest encompassing several oil accumulations presumed to be falling along a single migration pathway, a number of distinct pools were identified. Results helped decide the placement of a delineation well and identify areas prospective for light oils > 35° API.