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нефтегазовая промышленность
содержание воды в продукции (скважины)
нефтегазовая промышленность
содержание воды (в пластовой жидкости)
обводнённость
объём воды, извлекаемой из буровой скважины
нефтегазовая промышленность
скважинный влагомер
Coal mining regions are significant resource extraction industries in many parts of the world. They provide a large amount of the fossil fuel energy in the world economy.
The People's Republic of China is the largest producer of coal in the world, while Australia is the largest coal exporter. Countries with the largest proven black coal reserves are the United States (250.2 billion tonnes), Russia (160.3 billion tonnes), Australia (147.4 billion tonnes), China (138.8 billion tonnes) and India (101.3 billion tonnes).
A coal-mining region is a region in which coal mining is a significant economic activity. Coal-mining regions are often associated with the social, cultural and environmental impact of coal mining.