A method and system for selecting and arming each of a plurality of firing modules in a single-line selective perforating system is disclosed. A single firing line connects each firing module one at a time in a sequence to a control unit to receive power and control signals therefrom. Each module generates...http://www.google.es/patents/US4527636?utm_source=gb-gplus-sharePatente US4527636 - Single-wire selective perforation system having firing safeguards
Single-wire selective perforation system having firing safeguards
