封闭式负压抽油泵的研制与应用

封闭式负压抽油泵是一种运用全新设计理念研制成功的新型抽油泵,与普通抽油泵相比,其明显区别是没有固定阀,进液孔在泵的侧壁。其显著优势是进液通道较大,产液入泵较易,有利于稠油井生产;阀漏失几率较小,泵的使用寿命较长。室内及现场试验表明,该泵对稠油井、易出砂井有较强的适应性,可有效提高长停井措施有效率,延长油井免修期,提高稠油井产液量。

The development and application of the closed negative pressure oil well pump

The closed negative pressure oil well pump is a kind of newly developed pump.Compared with the regular pump,the visible distinguish is that it has no standing valve;the inlet hole is in the side of the pump. The main superiority is its bigger inlet channel.The outlet fluid can easily enter the pump.This is in favor of viscous crude production.The valve leak rate is very low.Pump working life is longer.Lab and field test result proves the pump suitable for viscous crude well and sand well.It can improve the effective measure rate of the long shut-down well.It can prolong the life of oil well and improve the fluid yielding of viscous crude well.