Technologies for capturing carbon dioxide and prospects of its utilization in depleted oil and gas fields

Abstract

The problem of global warming and climate change requires global efforts to reduce the negative impact on the atmosphere. Capturing carbon dioxide is a key strategy in achieving pollution reduction targets. Reducing air pollution can be achieved by reducing the share of fossil fuels in the energy balance, introducing technologies for generating electricity from renewable sources and increasing the energy efficiency of production. An important step towards decarbonization is the introduction of carbon dioxide capture technologies in large industrial plants. These technologies involve capturing carbon dioxide during the combustion of coal or gas and transporting it to a disposal site with its subsequent storage without contact with the atmosphere. The most common technologies are post-combustion, pre-combustion, and combustion of oxygen-enriched fuels for carbon dioxide capture. Carbon dioxide emitted from flue gases can be used commercially, as a raw material for the food and chemical industries. A promi-sing direction for the utilization of large volumes of carbon dioxide is its injection into depleted oil and gas fields in order to increase the recovery factors of hydrocarbons. Using the main tools of hydrodynamic modeling, studies were carried out to increase hydrocarbon recovery of the Hadyach oil and gas condensate field in the conditions of the manifestation of a water drive. Based on the results of the studies carried out, it was found that in the case of introducing the technology of injecting carbon dioxide into the reservoir of the V-16 horizon, an increase in the final gas recovery factor is achieved by 2.95%, and condensate - by 1.24% of the residual hydrocarbon reserves. The results of the studies carried out indicate significant prospects for the use of carbon dioxide in the oil and gas sector of Ukraine within the framework of the entire process of decarbonization of energy-intensive production.