| When the crude oil is pumped to the surface from the ground,and the crude oil temperature decreased gradually due to dissolved gas expansion,wax crystallization by molecular size order?and then deposited in the inner wall of the oil pipe,causing wellbore become narrow,oil production is reduced,even oil well was clogged and production tubing.Wax removal technique is based on the physical properties of crude oil and oil exploitation status of complexity,and according to different area,different oil well mining,blocks of different periods and different states of the paraffin wax,and adopt an effective process.Oil well paraffin work has been accompanied by the process of oilfield development,how to wax has been the production engineering staff to study the key task.In oil well paraffin removal work,efforts have been made to explore the wax removal effect is the best measure method used in Jilin oil fields,oil well washing equipment,usually use the Vehicle with pump and tank combinations,as the development of oil field,the paraffin wax is relatively serious,directly affect the output of crude oil,oil well washing work is also greatly increased.The Vehicle with pump and tank washing,washing fluid of oil pollution is very serious,affects the oil production.Therefore,it is necessary to model the well-flushing dewaxing device and corresponding wax removal technique.When the well-flushing boiler device working,the power is pumping unit,liquid in oil well get into the furnace body of the coil,through the wellhead bypass valve.the furnace body is composed of double-layer casing,interlayer were full of heat-conducting oil,when heat-conducting oil were heated,temperature can reach 300?(according to the model of heat conduction oil).Then the heat-conducting oil transfer heat from the coil to the fluid produced,liquid casing into the oil casing annular space after heating,and a reciprocating circulation,warm up stage by stage,achieved wash well by pumping unit power,then oil well paraffin finish. |
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