Magnetic Electric Detonator Coding Graded Perforation Firing Technology
In bridge plug multi-cluster perforation operations, using high resistance detonator in graded perforation poses a safety risk of accidental detonation. Magneto electric detonator have good resistance to environmental electricity. It requires a voltage signal of a specific frequency to detonate, which makes it safer.Designed a coded graded perforation system for magneto electric detonator, using fixed address encoding technology and bidirectional dual frequency communication method to achieve the selection function of surface system and electronic modules. Using micro-controller programming language to control the switching status of metal-oxide-semiconductor field-effect transistor , the surface DC power supply signal is converted into a 100 kHz pulse signal underground, achieving the detonation function of magnetic electric detonator. Using voltage threshold control technology greatly improves construction safety. Ground simulation test on the magnetic electric detonator coding graded perforation system, and the results showed that the detonation velocities of the detonating cord reached 7800 m/s, indicating that magnetic electric detonator coding graded perforation firing technology has high reliability. The successful application of this technology in multiple wells in China has shown its strong applicability. The technology provides a new detonation technology for pumping graded perforation, and is of great significance in reducing the safety risks of perforation construction.
magneto electric detonatorgraded perforationcommunication methodhigh frequency pulse signal
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