A Practical Guide to Modern Diversion Technology

摘要

Success of a matrix acidizing or fracture stimulation treatment depends upon complete coverage of all zones. The diversion process is used to help ensure that stimulation fluids are distributed across the entire interval to be treated. The diversion method best suited for a particular situation depends on many factors, including the type of well completion, perforation pattern, zonal isolation method, and stimulation technique. Selection of the most appropriate diversion method is also influenced by variations in formation permeability or stress contrasts along the interval to be treated. The purpose of this paper is to provide a historical review of diversion technologies applied in matrix acidizing and hydraulic fracturing treatments and to build upon past experiences to allow optimization of modern diversion practices with self-degrading particulates. Diverter design guidelines will be provided guiding the reader toward the best practices for a) choosing the appropriate base material, b) selecting the correct particle size distribution, c) deploying the diverting agent properly, and d) monitoring the execution of the diverter stages. Laboratory and field data will be provided to supplement the design process.