EFI detonator initiation system and method

摘要: In one aspect of the invention, an environmentally insensitive initiator, including: electro-explosive device responsive to electrical signal unique voltage and frequency applied device, being such that are not otherwise present in a well completion operation. An example is 350V at 900 Hz. another aspect, initiator insertable housing casing, having contact which grounded when uninstalled, protect against unintended currents, but becomes ungrounded by act inserting housing. further including dual-function fuse. first function, fuse permits prefire, low-current, continuity test through circuitry without applying energy initiating element, internal element will open if higher current, above threshold, second destroyed as result detonator charge detonated, permitting post fire verify detonation sensing destruction additional circuit card assembly protected physical damage.