双柱塞杆式减载抽油泵的研制与应用  

Development and Application of Double Plunger Rod Type Load Reducing Pump

作　　者：李军 付小坤 陈启龙 刘刚 郭斌 LI Jun;FU Xiaokun;CHEN Qilong;LIU Gang;GUO Bin(SINOPEC Northwest Oilfield Company,Urumchi,Xinjiang 830000,China)

机构地区：[1]中石化西北油田分公司

出　　处：《钻采工艺》2022年第5期118-122,共5页Drilling & Production Technology

基　　金：国家科技重大专项“塔里木盆地碳酸盐岩油气田提高采收率关键技术示范工程”(编号:2016ZX05053)。

摘　　要：塔河油田目前已进入开发中后期,随着油田开发的不断深入,油田深抽提液的开发需求逐渐加大,现有的深抽提液技术受到抽油机额定悬点载荷和抽油杆强度的制约,泵挂深度和日产液量受到一定的限制,无法满足油田开发需求。针对以上问题,通过优化改进普通杆式泵的结构,结合减载器的原理,创新地研制出了一种适用于超深井开发的杆式减载抽油泵,该泵应用双柱塞结构,泵筒上设置呼吸孔,利用油管液柱压力、油管和套管之间的环空液柱压力的差异性,在大小柱塞连接处的上、下端面造压差,形成向上的推力,在提高泵排量的同时,降低悬点载荷,延长抽油杆寿命,实现了小泵载荷、大泵排量的高效生产。现场试验结果表明,该泵能达到降低载荷、提高产液的目的,实现大泵深抽,具有很高的推广价值。Tahe oilfield has entered the middle and later periods of the development at present.With the development of oilfield,the development demand of deep extraction liquid in oil field gradually increases.The existing deep extraction fluid technology was restricted by the rated suspension point load of pumping unit and the strength of sucker rod,and the pump setting depth and daily production are limited to a certain extent,which is unable to meet the demand of oilfield development.In view of the above problem,by optimizing the ordinary rod pump structure,combined with the principle of lightening,a load-reducing rod type pump for ultra-deep well development is developed innovatively.This pump is with double plunger pumps with breathing hole set on pump barrel.By using tubing fluid column pressure and fluid column pressure difference in tubing and casing annulus,the pressure difference between the upper and lower end faces of the connection of double plungers has been formed,generating upward thrust to increase pump rate and meanwhile reduce the suspension point load,prolong the sucker rod service life,has realized the small pump load,large pump capacity and efficient production.Field test results show that the pump can achieve the purpose of reducing load,increasing liquid production,and realizing deep pumping of large pump,which has a high popularization value.

关 键 词：双柱塞杆式泵 减载抽油泵 悬点载荷 泵挂深度 塔河油田 

分 类 号：TE933.3[石油与天然气工程—石油机械设备]