速度管柱系统研制与应用

The development and application of the velocity string system

针对长庆油田低压低产小水量气井产量低、携液能力差、井底易产生积液,不能正常生产的现状,研制了连续管速度管柱排水采气技术所需的装置及工具,解决了带压情况下38.1mm连续管的悬挂、密封和剪断问题。介绍了关键部件操作窗和悬挂器的结构原理,阐明了作业装置的技术路线,分析了速度管柱在苏里格气田12口井上的现场施工情况,指出速度管柱技术为低压低产气井提供了一种有效的增产手段。

There are low yield, poor liquid-carrying capacity, easy formation of effusions at the bottomhole and inability to perform normal operation in Changqing Oilfield, the devices and tools needed by the drainage gas-recovery technology of coiled tubing velocity string were developed. The problems of the 38.1 mm coiled tubing hanging, sealing and snipping under pressurization were solved. The structural principle of the operation window of key parts and the hanger was introduced.The technological line of the operating device was expounded.The field construction of the velocity string in 12 wells of Sulige Gasfield was analyzed. It is pointed out that the velocity string technology provides an effective yield increase method for low-pressure and low-yield gas wells.