Application of surface drive screw pump for oil emulsion lifting in Tahe Oilfield
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摘要: 塔河油田奥陶系油藏机抽井因原油乳化造成光杆滞后、电流高停机频繁洗井，洗井后排液周期长，有效期短，普通有杆泵、离心泵都无法满足原油举升需求。通过对螺杆泵故障分析及文献调研从抽油杆和橡胶方面改进地面驱动螺杆泵，并在TK241CH井投入使用，满足原油乳化举升。Abstract: The pumping wells in Tahe Ordovician reservoir flush frequently, since oil emulsion causes polish rod lag and high current. Flushing causes long period of discharging flushing liquid and it always operates shortly. General oil-well pump and centrifugal pump cannot fit oil emulsion. This paper analyzes the failure of screw pump and researches other papers. The surface drive screw pump is improved in sucker rod and rubber. It is applied in well TK241CH and fits oil emulsion.
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Key words:
- plug-in type sucker rod /
- surface drive screw pump /
- oil emulsion /
- Tahe Oilfield
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