Evaluation of the effectiveness of the method of studying water saturation for solving urgent decarbonization problems

Abstract

At present, the impact of the decarbonization trend on the oil and gas industry is becoming more and more tangible. One of the promising approaches to carbon dioxide utilization is the technology of its injection into the productive formation for enhanced oil recovery. The projects realized in the world have shown the efficiency of liquefied carbon dioxide application as a solvent for wells, which leads to increase of hydrocarbon flow rate due to various mechanisms. CO2 injection has been proven to reduce the interfacial tension at the hydrocarbon-water interface and improve water wettability of the rock, converting it from a film state to a droplet state. However, when implementing this approach, it is worth paying attention to the study of formation parameters such as saturation and capillary forces. In this paper, the capillarometry principle is considered to calculate the water saturation parameter of a complex reservoir type with low filtration properties. The study is to evaluate an effective approach to study the estimated residual water saturation under complex pore space geometry and possible pore hydrophilicity disturbance. The practical interest of this work is to increase the study of reservoir properties at the pore level for prediction of its physical and chemical properties in the modeling of composite dynamic model for solving topical issues in reservoir development.