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ASP project. Problematics of dissolved oxygen. Theory and practice

M.Y. Bondar, M.Y. Shuster, V.M. Karpan, M.Y. Kostina, М.А. Azamatov

Original article

DOI https://doi.org/10.18599/grs.2018.1.32-38

32-38
rus.
eng.

open access

Under a Creative Commons license

The article presents the latest results of studies of dissolved oxygen affect on efficiency of ASP flooding project being executed by Salym Petroleum Development N.V. Company. Pilot project associated with experimental injection of solutions of anionic surface-active substance (surfactant), soda and polymer into formation for enhanced oil recovery (ASP project) has been implemented since 2016. Stability of one of ASP components – polymer strongly depends upon presence of iron, hardness cations and dissolved oxygen in water. As long as polymer is used for injection on two project stages, which are the main and the most extended, at the stage of ASP unit design a complex of polymer protection from negative factors was considered, particularly impact of oxygen, which causes not only oxygen corrosion, but also irreversible destruction of polymer chains. The article describes studies of polymer solution stability, contains analysis of viscosity loss in the course of time in presence of iron and oxygen for polymer solutions. It justifies selection of chemical deoxygenation method for dissolved oxygen control. The article describes program of ASP laboratory studies and analytical instrumentation applied. It provides ASP process scheme and recommendations for technology implementation.

ASP flooding, EOR, ASP Pilot project, West Salym oil field, dissolved oxygen, free-radical degradation mechanism, chemical oxygen scavenging, nitrogen blanketing, amperometrical method, polymer stability

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Mikhail Yu. Bondar
Salym Petroleum Development NV
31, Novinsky boul., Moscow, 123242, Russian Federation

Mikhail Yu. Shuster
Salym Petroleum Development NV
31, Novinsky boul., Moscow, 123242, Russian Federation

Volodymyr M. Karpan
Salym Petroleum Development NV
31, Novinsky boul., Moscow, 123242, Russian Federation

Maria Yu. Kostina
Salym Petroleum Development NV
31, Novinsky boul., Moscow, 123242, Russian Federation

Marat A. Azamatov
Salym Petroleum Development NV
31, Novinsky boul., Moscow, 123242, Russian Federation

For citation:

Bondar M.Y., Shuster M.Y., Karpan V.M., Kostina M.Y., Azamatov М.А. (2018). ASP project. Problematics of dissolved oxygen. Theory and practice. Georesursy = Georesources, 20(1), pp. 32-38. DOI: https://doi.org/10.18599/grs.2018.1.32-38