The energy consumption of oilfield fuel oil heating furnaces is high, and the sulfur dioxide, nitrogen oxides and soot in the flue gas emitted seriously exceed the standard, causing serious environmental pollution. So it is urgent to replace the oilfield heating furnace. The technology principle, energy consumption calculation, equipment characteristics and feasibility of replacing oil field fuel oil heating furnace of air source heat pump and sewage source heat pump are studied, and the benefits of two heat pump technologies replacing oil field fuel oil heating furnace are analyzed. Through research, it is concluded that the air source heat pump and sewage source heat pump technology are effective ways to replace oil in the oil field heating furnace; by using air source heat pump and sewage source heat pump to replace the fuel oil heating furnace, the operating costs can be reduced by 30% and 45% respectively, and the carbon emissions can be reduced by 60% and 75% respectively. By replacing the fuel oil of the heating furnace, not only can you obtain considerable economic benefits, but you can also effectively reduce the emissions of sulfur dioxide, nitrogen oxides, and smoke.