小通径环形封井器的研制与应用  

The research and application of the circular BOP with a small drift diameter

作　　者：岳振玉[1] 付增[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》2011年第2期55-57,92-93,共3页China Petroleum Machinery

基　　金：中石化股份公司科技攻关项目"油水井带压作业工艺技术研究"(P08015)

摘　　要：针对现有抽油杆防喷器不能满足油井带压作业的问题,研制了一种安全性和可靠性较高的小通径环形封井器。该封井器主要由壳体、球形胶心、活塞、活塞压盖和上压盖等组成,它结构简单,更换胶心方便,液压控制,操作简单便捷;胶心外表为球面,受力均匀,动静密封压力高,可密封不同直径的抽油杆杆柱。试验及应用表明,该封井器能满足现场带压起下抽油杆的要求,性能可靠,可操作性强,性能指标达到了设计要求。In light of the problem that the current sucker rod blowout preventer cannot satisfy the pressurized operation of oil wells,a type of small-drift circular BOP with high safety and reliability was developed.The BOP mainly consists of shell,global rubber element,piston,piston gland and upper gland.It is simple in structure,and is convenient to replace the element.Controlled hydraulically,it is easy to operate.The rubber element has a sphere-like outside surface with high dynamic and static sealing pressure,thus it is able to seal sucker rod strings with different diameters.The experiment and application show that the BOP can satisfy the field requirement of rod string tripping under pressure.

关 键 词：小通径 环形 封井器 密封 带压作业 

分 类 号：TE931.202[石油与天然气工程—石油机械设备]