Sentences with underground combustion
un·der·ground com·bus·tion
U u - The method involves controlled underground combustion by the injection of air in various wells. The resulting increase in temperature and pressure reduces the viscosity of the oil.In the underground combustion approach, heat is generated by burning part of the oil contained in the formation pores.Underground combustion is the process of heating oil to allow it to flow more easily and make it easier to recover.