Because of the geological characteristics and low permeability of Western Siberia hydrocarbon reservoirs, hydraulic fracturing is the most effective method for improving hydrocarbon production. During recent years. the massive fracturing treatments in this area have led to a reduction of well candidates for this type of production-enhancement technique. Currently. the majority of selected wells for fracture stimulation are considered risky because of significant water cut increase after stimulation. The question arises: How to reduce water production while enhancing oil production? This paper reviews 26 case histories exemplifying the use of relatively permeability modifiers (RPMs) in hydraulic fracturing to enhance oil recovery and control water production. Also, results Of laboratory studies are included to support the RPM-fracturing concept and -placement techniques.
