Research and Application of Three-Times Pulse Composite Perforating Technology

摘要

The three-times pulse composite perforating technology is a high quality technology which integrates the perforation and powder fracturing. The main principle is that the shaped charge and the fracture powder are ignited by detonating cord simultaneously. And the perforating jet is formed along the different phases, the high-pressure gas generated by the deflagration of the solid rocket propellant in the cracker fractures the stratum along the perforated hole [1], which can form high diversion channel and crack in the near wellbore area increasing the jet area. After the application of more than 1000 well fields, this technology has obvious effect of increasing production, which has certain reliability, security and low cost.