Lift technique of sucker rod pump for SAGD high dense oil in Liaohe oil field

The SAGD technique is a effective mode to increase the recovery ratio of dense oil pool,and its efficiency depends on whether the lift system of oil well meets the demand of pro- duetion capacity.The lift system of sucker rod pump for SAGD high dense oil in Liaohe oil field,composed of oil well pump of non-standard 108,120,140 SAGD high tempera- ture and large discharge capacity,connecting-tripping de- vice and sliding sucker rod centralizer with solid lubrication technique,successfully solves the technical problems as high temperature,large discharge capacity and attrition of string in SAGD well.