液压振动下击器的研究与应用  

Research and application of hydraulic vibration bumper jar

作　　者：单晓伟 SHAN Xiaowei(Petroleum Engineering Institute, Zhongyuan Oilfield Company, SINOPEC, Puyang 457001, China)

机构地区：[1]中国石化中原油田分公司石油工程技术研究院

出　　处：《断块油气田》2019年第4期541-544,共4页Fault-Block Oil & Gas Field

基　　金：国家科技重大专项课题“高含硫气藏安全高效开发技术”(2016ZX05017-003)

摘　　要：油田开发过程中,油水井管柱、井下工具遇卡是生产或作业过程中常见的井下事故。理论研究和实践表明,利用振动传递一定频率的解卡能量至卡点,可以有效破坏卡点的受力状态,降低被卡落物所受的摩擦阻力,从而减小落物所受的夹持力,提高解卡成功率。中原油田研制出了用于解卡施工的液压振动下击器,下击力600~800 kN,下击频率80~100次/min,满足了现场施工的要求。现场应用表明:该工具工作性能稳定,适用于封隔器等卡点解卡作业,解卡针对性强,效果明显,大幅缩短了作业周期,降低了修井成本,有效避免了常规套铣作业易造成套管破损等二次事故的情况;且作业时泵车驱动,可用于小修设备施工,突破了小修解卡的技术瓶颈,推广使用前景广阔。In the process of oilfield development, it is one of the common downhole accidents that the string and tool of oil and gas well get stuck. Theoretical research and practice show that the use of vibration to transfer a certain frequency of energy to the sticking point can effectively destroy the stress state of the sticking point, reduce the friction resistance of falling objects, reduce the clamping force of falling objects, and improve the success rate of sticking point solving. Zhongyuan Oilfield has innovatively developed a hydraulic vibration knockdown device for sticking point release construction, with a driving load of 600-800 kN and a driving frequency of 80-100 times/min, which meets the requirements of on-site construction and is the first of its kind in China. Field application practice proves that the tool has stable working performance, and is suitable to resolve the problem of packer sticking, etc. The unfreezing accuracy is high and the effect is obvious. Workover cycles and costs have been significantly reduced, and the casing damage caused by conventional workover operation is avoided. When operating, the pump truck can be used for workover, and the difficulty of workover is solved by the unfreezing technology of hydraulic vibration. This technique has a broad application prospect.

关 键 词：液压振动 下击器 解卡工艺 

分 类 号：TE935[石油与天然气工程—石油机械设备]