On the possibility of introducing SWAG injection to enhance oil recovery at the Rechitsa field using flue and flare gases

UDK: 622.276.53.054.23:621.67-83

DOI: 10.24887/0028-2448-2025-11-102-107

Key words: SWAG injection, pump-ejector system, flue and flare gases, foaming surfactants

Authors: A.N. Drozdov (RUDN University, RF, Moscow; Gubkin University, RF, Moscow; Sergo Ordzhonikidze Russian State University for Geological Prospecting, RF, Moscow); E.I. Gorelkina (RUDN University, RF, Moscow; Sergo Ordzhonikidze Russian State University for Geological Prospecting, RF, Moscow)

The article considers the possibilities of resuming the implementation of simultaneous water-gas (SWAG) treatment at the Rechitsa oil field of Belorusneft using pump-ejector systems, as well as flue and flare gases of the Belarusian Gas Processing Plant (BGPP). Since Belorusneft utilizes almost all associated petroleum gas, and most of it goes to BGPP, it is advisable to use flue and flare gases of BGPP as a working agent to resume work on SWAG injection, which is located near the Rechitsa oil field. This enables to organize SWAG injection at the Rechitsa field with minimal costs. It is necessary to install a medium-pressure compressor at BGPP, as well as to lay a gas pipeline from the compressor to the oil field, where the pumping station of the flooding system is located. A pump-ejector system should be installed at the field, connecting the ejector nozzle to the discharge line of the flooding pump, the ejector receiving chamber to the gas pipeline from the compressor, and the outlet to the water pipes to the injection wells. The use of foaming surfactants enables to increase the stability of water-gas mixtures, expand the operating area of the booster pump, and also use the synergistic effect of increasing oil recovery while simultaneously reducing the carbon footprint by reducing industrial gas emissions into the atmosphere.

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