Fracturing of high viscosity oil reservoir in the Samara region

Authors: A.N. Parfyonov, А.Е. Letichevskiy (Samaraneftegaz JSC, RF, Samara), О.V. Evseyev (RN-UfaNIPIneft LLC, RF, Ufa), S.S. Sitdikov, I.V. Sudeyev (Rosneft Oil Company OJSC, RF, Moscow)

Key words: hydraulic fracturing, high viscosity oil, rock mechanics, laboratory investigations, forced fracture closing, proppant, well efficiency, coiled tubing.

This article summarizes the experience that was obtained in hydraulic fracturing of high viscosity oil reservoir in the Samara region. As a result of fracturing operations conducted there was wells productivity multiplication. During operations preparation the analysis of world experience of similar reservoirs stimulation works was hold and fracturing technology was offered taking into account the Samara region geological features. Except the fracturing technology modification this article touches upon the wells production testing after stimulation. Also the results of laboratory testing of the core mechanical properties and proppant pack retained conductivity are analyzed.