Abstract
Oil shale is quite widespread in the world. They are represented by both small oil shale occurrences and large deposits. At present, only a few oil shale deposits in Brazil, China and Estonia are being exploited. Given the decline in global oil production, oil shale is a promising source of energy in the future. Oil shale contains hydrocarbon reserves that are significantly higher than those of natural oil and gas. According to exploration data, the resources of oil shale deposits in the world are enormous. Their potential resources are estimated at 650 trillion tonnes, while known resources reach 450 trillion tonnes. It is difficult to make a general assessment of global resources, as different countries use different methods to study them, taking into account the availability of reserves, the need, and the feasibility of their extraction and use. When addressing environmental issues, it is necessary to take into account the fact that gas emissions and wastewater from oil shale processing facilities contain pollutants that have an increased environmental impact and harmful effects on the human body.
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