E-mail: IAVinogradov2@tnk-bp.com, AAZagorovskiy@tnk-bp.com, VAGrinchenko@tnk-bp.com
Key words: terrigenous formation, surficial salination, halite, desalination, washout of saline deposits, highly saline water, core experiments.
The paper addresses the issues of desalinization of terrigenous reservoir in the Verkhnechonsky horizon, pore throats of which are lined with halite. The paper presents general results of core laboratory tests. It demonstrates changes in fresh water salinity and rheology during the process of its filtration through salinized core sample. The scale of porosity and permeability change during rock desalinization is shown. Critical factors controlling oil displacement efficiency are identified.
References
1. Verigin N.N., Sherzhukov B.S., Collection of works “Razvitie issledovaniy po
teorii fil'tratsii v SSSR” (Development of research in the theory of filtration in the
USSR), Moscow: Nauka Publ., 1966, pp. 237-313.
2. Verigin N.N., Vasil'ev S.V., Sarkisyan V.S., Sherzhukov B.S., Gidrodinamicheskie i fiziko-khimicheskie svoystva gornykh porod (Hydrodynamic and physical and chemical properties of rocks), Moscow: Nedra Publ., 1977.
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