Study and application of multi-pulse composite perforation technology

The conventional compound perforation cannot meet the development of high-water content, low permeability and heavy oil field. A multi-pulse compound perforation device is developed, which is a high temperature and high-pressure gas produced by two or more different burning rate compound propellant combustion, which is directly applied to the pore through the optimized pressure relief pore structure, and the perforation channel is repeatedly used as a work seam, A new type of perforating device for deep fracturing of strata is obtained by the longer pressure action time. The perforation of the perforating device can effectively improve the production capacity of medium and low permeable reservoir wells.