Research and Application of Multi-stage Hydraulic Impact De-blocking Technology
In order to solve the supporting tools of conventional hydraulic impact de-blocking tech-nology can only realize one-time impact plugging removal.Three new multi-stage hydraulic impact de-blocking tools were conceived and demonstrated,and the common pitching method in China was optimized for tool improvement.The high-precision rupture disc was improved as the impact plate,and its accuracy can exceed 90％.The self-designed ball-throwing multi-stage im-pactor,by changing the sizes of the steel ball and the ball seat,thus realizing different levels of hydraulic impact operations.The downhole application test was carried out to verify the compres-sive accuracy of the tool impact plate and ball-throwing multi-stage impactor,the reliability of tools,the hydraulic pulse vibration de-blocking effect of the technology,and the good stimulation effect of the technology.The research shows that the improved multi-stage hydraulic impact de-blocking technology is stable and reliable,with a remarkable shocking de-blocking effect,which has a better promotion and application prospect and provides a reference for the technology applications at home and abroad.
NETL
NSTL
万方数据
维普
