25mm长柱塞短泵筒管式抽油泵的研制与应用  

Development and Application of 25 mm Long-plunger Short-barrel Tubular Pump

作　　者：王百战[1] 王毅理[1] 张刘富[1] 白文雄[1] 张春新[1] 孙飞[1] 

机构地区：[1]长庆油田分公司机械制造总厂

出　　处：《石油机械》2013年第9期102-104,共3页China Petroleum Machinery

摘　　要：针对长庆油田超低渗区块低产井存在的泵排量大与单井产液量低不匹配的问题,以及25 mm实心柱塞抽油泵存在的结构复杂,油流通道曲折,泵筒加工难度大、成本高等问题,研制了25 mm长柱塞短泵筒管式抽油泵。该泵主要由泵筒总成、柱塞总成和进油阀总成3部分组成,采用长柱塞短泵筒,游动阀全部外置于柱塞上端的结构,解决了抽油泵柱塞开式阀罩断裂的问题。现场试验结果表明,该泵结构合理、可靠性高、易于加工,在日产液量小于2 m3的低产液井中使用该泵可提高泵效6.33%,同时还可以降低能耗,延长抽油泵的使用寿命。There exist some problems with the low-yield wells in the super low permeability block in Changqing Oilfield, such as mismatching between large displacement and low single-well fluid production and the complex structure, zigzagging oil flow channel, difficulty and high cost in pump barrel processing with regard to the Ф25 mm solid plunger oil-well pump. Therefore, the Ф25 mm long-plunger short-barrel tubular pump was developed. The pump mainly consists of barrel assembly, plunger assembly and inlet valve assembly, adopting long plunger and short barrel as well as the structure in which all traveling valves are externally placed on the upper end of plung- er. This solves the problem that the open cage of the pump plunger tends to break. The field application shows that the pump is reasonable in structure, with high reliability and easy processing. The pump efficiency can be improved by 6.33% by the pump which is used in the low-yield well whose daily liquid production is less than 2 m3, thus re- ducing energy consumption and lengthening the service life of the pump.

关 键 词：管式抽油泵 实心柱塞泵 长柱塞 油流通道 阀罩 进油阀 

分 类 号：TE933[石油与天然气工程—石油机械设备]