Problem of efficiency of low-productivity carbonate reservoir development on example of Turnaisian stage of Tuymazinskoye field

Authors: R.F. Yakupov (Oil and Gas Department Tuymazaneft, RF, Oktyabrsky), V.Sh. Mukhametshin (Ufa State Petroleum Technological University, RF, Ufa)

Key words: carbonate reservoir, spot waterflooding, permeability, recovery, hydrodynamic interaction, acid treatment, near-wellbore zone, well re-perforation, diversion to injection.

The authors analyzed efficiency of reserves development and identified peak value residue stock zones. Estimated potential of put into production for approx. 500 transition wells never exploited for Turnaisian layers. Through thorough analysis of result of well tests current injection zones and injection test area determined effects of injection wells on production wells which is 350m away. The article identifies most efficient treatment technique: acid treatments, re-perforation combined with acid and polymer reservoir isolation treatment. On the basis of idle wells the authors formed program of well diversion onto production and injection well stock.

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