Safety apparatus for perforating system

作者: Joe C. Hromas , Larry Grigar

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摘要: Safety apparatus is disclosed for providing ballistic train interruption in a perforating system. The safety comprises generally tubular shaped housing having first and second ends which are fabricated to permit the be positioned at any location sections third section rotatably mounted move between disarmed position an armed based on downhole pressure. Upon retrieval of system from wellbore, functions return its position. Additionally, provided permanently disable insure that no inadvertent detonation guns occurs when retrieving wellbore.