Harmful effect caused by rise in viscosity can be removed, pump efficiency may be raised, production period of oil well may be prolonged and oil production in period may be increased by pumping through variable? displacement in steam?
采用变排量抽油技术能消除因粘度升高造成的不利影响,提高泵效、延长油井生产周期、增加周期产油量。
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