新型带压作业防喷装置  

Research and application of new blowout preventer used in snubbing service

作　　者：吴千里 

机构地区：[1]中国石油集团钻井工程技术研究院

出　　处：《石油机械》2008年第1期49-51,84,共3页China Petroleum Machinery

基　　金：中国石油天然气集团公司石油科技中青年创新基金项目"高压注水井带压作业井口防喷系统关键技术研究"(06E1009)

摘　　要：针对目前带压作业防喷装置存在承压低、胶心寿命短以及安全性差的问题,研制了一种新型带压作业防喷装置。该装置在接箍探测器和压力平衡装置的配合下,通过2个闸板防喷器倒换开、关,使管柱接箍通过井口,在带压密封状态下完成管柱的起下操作。接箍探测器在起下油管柱偏离中心小于10mm时,能够准确探测出油管接箍通过时的位置,并能发出声光报警信号。大庆油田3口高压水井的现场试验结果表明,该装置能够满足高压注水井的带压作业需要,可实现缓冲条件下的卸压和升压,并且操作安全、方便。According to sealing characteristics of blowout preventer used for high pressure water injection wells in snubbing service, a new type of snubbing unit is put forward. With tubing coupling detector and pressure-equalizer harmonizing together, tubing coupling passes through the two ram blowout preventer by opening or closing alternatively in order to perform the tube moving up and down process with seal under high pressure state. A new hydraulic blowout preventer system that mainly includes ram blowout preventer, pressure-equalizer and tubing coupling detector is developed. The oilfield test results prove that the new blowout preventer system can meet the requirement of high pressure water injection well in snubbing service. This represents a direction of snubbing unit to study and develop with automation and intellectualization.

关 键 词：带压作业 防喷装置 滑动密封副 接箍探测器 压力平衡 

分 类 号：TE931.1[石油与天然气工程—石油机械设备] U178[交通运输工程]