Reservoir Surveillance

Reservoir Surveillance with studioSL A surveillance project allows you to quickly import prd/inj data and then compute flow-based well rate allocation factors, injector patterns, and conformance plots. Because streamlines are computed from well rates and locations, the identification of well-pairs and well rate allocation factors are based on historical flowrates rather than just geometrics. Allocation factors are also updated for each timestep meaning that well-pairs and patterns can vary in time. Surveillance within studioSL The surveillance workflow is part of the basic functionality of studioSL The workflow will guide you through the basic steps of importing well production data, creating a simple grid and flow model, computing the streamlines, and lastly visualizing allocation factors and injector efficiencies. Import Well Production Data As a minimum historical well production data, well paths, and completion events are required. Data formats supported can be from OFM, geoSCOUT, and Accumap, or general ASCII formats. The Well Data Import Tool will then create a file suitable for surveillance or simulation. Once production data has been imported and a simulation file has been created, it can then be viewed and QC'd on a field-wide basis or an individual well basis. Creating the Surveillance Flow Model Once the well production data has been imported, studioSL can automatically wrap a simple box grid around the well perfs to create a simple flow model on which streamlines are then computed. Alternatively, more complex grids created in Petrel or Gocad can be imported within the studioSL Deckbuilder wizard. Streamlines connecting each well can then be computed on the underlying grid, based on the well locations and each well's historical voidage rate. This calculation is repeated at each timestep production data exists for. The final step of the surveillance workflow is to convert the streamline information into flow-based well rate allocation factors and the injector efficiency plot.