自适应且高效井口密封装置设计与研究  

Self-adaption and High Efficiency Wellhead Sealing Equipment Design and Technology

作　　者：赵吉春 杨森[2] 袁海博[2] 

机构地区：[1]延长石油志丹采油厂 [2]延安大学石油工程与环境工程学院,陕西延安716000

出　　处：《延安大学学报（自然科学版）》2017年第2期66-68,共3页Journal of Yan'an University：Natural Science Edition

摘　　要：在有杆泵开采过程中,抽油杆带动光杆频繁做上下往复运动,对盘根产生磨损,从而密封性能下降,造成原油泄漏。本文针对以上存在问题,提出运用气体密封压缩原理,将原先沿光杆径向压缩密封转化为轴向压缩密封的思路,设计出一种自适应且高效的井口密封装置。该装置大致分为两大部分:一是轴向施压装置,二是自动润滑装置。对于前者,设计选用螺旋膨胀管为轴向施压装置,通气膨胀后压缩盘根,从而共同完成对井口的密封;对于后者,设计了润滑油腔,光杆可自动带取润滑油。在志丹油厂投入实践后,本设计装置即减少了盘根的磨损,又可以回收利用渗漏的原油,因而很好的提升了井口密封的效果。During oil extraction process, the up - down reciprocating of polish rod, powered by sucker rod, always cause abrasion on the packing sets, resulting in poor sealing ability of packing sets and oil spilling. In order to resolve the above problems, this paper using theory of gas compressibility transforms the original radial pressure along the polished rod into axial pressure, and designs corresponding wellhead cealing device. The device includes two parts：one is the axial pressure device, the other is the automatic lubrication device. For axial pressure device, screw expansion tube is choosed to compresses packing set; for automatic lubrication device, the lubricant oil cavity is choosed to polish rod and carry lubricant oil automatically. The pilot practice in Zhidan oil field shows that, the designed device can reduce abrasion of packing set, and can reclaim leaked oil.

关 键 词：井口密封装置 自适应 膨胀管 

分 类 号：TE931.1[石油与天然气工程—石油机械设备]