携砂抗砂增效抽油系统现场应用及效果评价

由KS—A抗砂增效泵及配套的KS—T携砂助抽器构成的新型抽油系统 ,具有抗砂磨、防砂卡、防砂埋、减少泵漏失及携砂助抽等特点。与长柱塞防砂卡抽油泵相比 ,KS—A抗砂增效泵的不同之处是柱塞两端装有刮砂杯 ,柱塞密封段有几道强磁密封环 ,增加了泵筒与柱塞间隙的密封性能。从现场 2 5口井的应用情况看 ,对于出砂量小于 1%的油井 ,可直接下抗砂增效泵和携砂助抽器进行生产 ,不会出现卡泵或砂埋泵筒 ;对于出砂较严重的井 ,应先采取化学防砂和固砂措施 ,然后再下携砂抗砂增效抽油系统 ,能有效延长油井的检泵周期。然而KS—A抗砂增效泵的泵底阀阀座及阀球材质硬度不是很高 ,有时会出现被刺现象。

Field use effect and evaluation of rod pumping system wiht sandcarryin gdevice CPM

A new sand control sucker rod pumping system, comprised of sand control subsurface pump and sand-carrying device, is developed. Being different from the sand control subsurface pump with long plunger, the new pumping system is provided with sand scrapers at the two ends of the plunger, and there are ferromagnetic seal rings in the sealing section of the plunger. Field use of the new pumping system is illustrated. It is proved that the pumping system can operate well in sandy wells with less pump leakage.