HIGH DENSITY PERFORATING GUN SYSTEM

摘要

A high density perforating gun (11) having a carrier housing tube (17) and an interior charge holder tube (19) through which are mounted zinc alloy shaped charges (27) in a phased relationship between about 135 and 145 degrees. The 135 to 145 degree phased relationship provides for an 18 shot per foot perforating gun system (11). The shaped charges (27) of selected length are inserted into the carrier housing tube (17) and held in place by fastener rings (45) fitted to fastener ring slots (53). The nose ends of the shaped charges are fitted with ears (47) to receive a detonating cord (49). This positions the primer cord (49) in tension and generally coaxially with the carrier housing tube (17) to prevent charge interference and assure sequential detonation.