An Effective Matrix Diversion Technique for Carbonate Formations

Summary The removal of formation skin damage from carbonate reservoirs is ordinarily accomplished by stimulation with hydrochloric acid. Uniform coverage of the zone being treated during matrix acidizing stimulations of carbonate reservoirs is an accepted1 requirement for successful treatment. However, the task of achieving efficient diversion and uniform zonal coverage is often difficult because of permeability heterogeneity within the treated interval. In this article we describe a technique that has been used successfully to divert treating fluids in carbonate formations.