偏置阀式稠油抽油泵的研制与应用  

Development and application of eccentric valve pump for viscous oil recovery.

作　　者：李兰竹[1] 张雷[1] 刘丙生[1] 罗燕[1] 黄润晶[1] 

机构地区：[1]胜利油田分公司采油工艺研究院

出　　处：《石油机械》2007年第10期55-56,84,共2页China Petroleum Machinery

摘　　要：针对常规抽油泵在斜井和稠油井中抽液存在下行阻力大、下行困难和泵效低以及因井斜造成杆柱磨损等严重影响油田正常生产的问题，研制了偏置阀式稠油抽油泵。该抽油泵采用等径刮砂柱塞、球阀弹簧自动复位和偏置进油阀结构，克服了现有液力反馈式稠油抽油泵的缺点和不足，而且具有下行阻力小、进油流道大、流程短、吸入性能好、阀球关闭及时、防砂卡和减磨等特点。500余井次的现场应用表明，该泵比常规泵泵效平均提高5％-10％，检泵周期延长8个月以上。As slant well and viscous oil well are increasing,ordinary pump can't meet the well's regular production.Therefore,eccentric valve pump for viscous oil recovery is developed.Based on hydraulic feedback theory and distinctive structure of eccentric valve with reset spring,this pump can not only effectively solve the problem of downward movement of rod string,but the problem of valve ball's delaying of shutting down and lopsided dropping on slant well.Now,it is applied widely on the wells of Shengli Oilfield.Compared with ordinary pump,the pump efficiency of the viscous oil pump with eccentric valve is improved by 5%～10%,and the cycle of pump inspection is prolonged for more than eight months.

关 键 词：偏置阀 稠油抽油泵 液力反馈 稠油井 斜井 

分 类 号：TE933.3[石油与天然气工程—石油机械设备]