超长冲程井口密封装置的研制与应用  

Welllhead Sealing Device for Super-long Stroke Pumping

作　　者：秦延才[1] 刘晓玲[2] 张中慧[2] 王慧莉[2] 黄润晶[2] 吴峰[3] 郑强[2] 

机构地区：[1]胜利油田分公司河口采油厂 [2]胜利油田分公司采油工艺研究院 [3]胜利油田分公司胜利采油厂

出　　处：《石油机械》2014年第1期115-117,共3页China Petroleum Machinery

基　　金：中国石油化工股份有限公司重点科技攻关项目"超长冲程节能抽油系统研究"(310004)

摘　　要：目前常规井口密封装置多用于抽油机悬点在井口以上的情况,若用于长冲程采油,则地面需配套高架结构,存在稳定性差、起下困难和成本高等问题。为此,研制了超长冲程井口密封装置。该装置采用长密封管补偿对接方式,布置在井口以下,可满足12 m超长冲程抽油需要;采用软、硬组合双级密封方式,具有较好的耐压与密封性能。胜利油田5井次的试验结果表明,该装置在整个试油周期内工作时间长,密封良好,平均泵效达71.6%。At present the wellhead sealing device is often used by pumping system with the polished rod above wellhead. If the device is used in long-stroke pumping, the elevated structure should be provided on ground. This may cause such problems as poor stability, tripping difficulty and high cost. Therefore, the wellhead sealing device for super-long stroke pumping was developed. The device adopted long sealing pipe for compensation docking. II was arranged under wellhead, satisfying the pumping requirement of 12-meter super-long stroke. The soft and hard combinations and two-stage sealing mode were adopted, with desirable pressure resistance and sealability. The five-well- time test findings in Shengli Oilfield show that the device can work for a long time within the overall oil test cycle. The sealability is desirable and the average pump efficiency reaches 71.6%.

关 键 词：超长冲程 井口密封装置 补偿对接 双级密封 

分 类 号：TE931[石油与天然气工程—石油机械设备]