High-tech methods of sealing and selective-sealing cementing of wells

Authors: S.S.Yankulev, Y.Z.Tsirin (Open Joint Stock Association Scientific Industrial Enterprise “Burovaya Technica”),N.L.Schavelev (Open Joint StockAssociation “Surgutneftegas”),G.B.Provodnikov (SurgutNIPIneft),D.D.Erega (Surgut Drilling Company #3)


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