Abstract
Attention is focused on the strategic task of science and production to provide the domestic economy with its own energy resources, ways of implementing this important task due to an innovative approach of using oil and gas potential and the corresponding infrastructure. Taking into account the degree of depletion of main oil resources, one of the ways to increase the oil recovery rate from depleted and watered pay horizons by applying the technology of "blue hydrogen" production under reservoir thermobaric conditions is described. In accordance with the relevance of the problem, the purpose of the scientific publication was formulated, which consists in outlining the range of research on the evaluation of experience and the estimation of the prospects for using the technology of generating "blue hydrogen" from residual reserves in oil fields. For its implementation, relevant goals have been set: analysis of the results of global research on hydrogen generation technology in formation conditions; selection of the main aspects of designing the hydrogen generation process and systematization of analytical research methods; analysis of the main aspects of the Canadian company's hydrogen obtaining technology; assessment of the prospects and risks of hydrogen production in the outdated oil and gas fields of Ukraine. It was established that certain thermobaric conditions are necessary for "blue hydrogen" formation in an oil reservoir, namely a temperature of 250-800 °C and a pressure of 2-8 MPa. An example of the practical implementation of the technology for the "blue hydrogen" formation in real reservoir conditions in old heavy oil field in Saskatchewan by Proton Technologies is presented. Attention is focused on the conditions of conducting the experiment, in particular, on the injection of oxygen into the oil reservoir. Considering the specific features of the described technologies for obtaining "blue hydrogen" in depleted or watered oil and gas fields and high environmental and technogenic risks in its implementation in Ukraine, attention is concentrated on the need to conduct additional studies on evaluating the processes of the reaction running of in-situ combustion with the possibility of evaluating the thermobaric conditions of the reaction, and then the factors that will affect the system of wells casing, its reliability, durability and the need for preliminary repair work. It is emphasized the need to implement a project of physical modelling the process of "blue hydrogen" formation in laboratory environment with the reproduction of appropriate reservoir thermobaric conditions and the use of reservoir fluids of various composition, in accordance with the conditions of Ukrainian oil fields, with the selection of optimal process parameters when assessing the possible risks of the process at various stages of its implementation. Particular attention is paid to the need to conduct research and use the experience of obtaining "blue hydrogen" at the hydrocarbon deposits of Canada, for which it is necessary to select a priority object and conduct research and field works relating to the implementation of the created technology