Retention member for perforating guns

A perforating gun includes a charge tube having shaped charges affixed thereto. Each shaped charge includes a radially outward pointing post adapted to receive a detonator cord. A retention member installed on the post provides a compressive force that energetically couples the detonator cord to the...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Day, Cory D, Andrich, Lyle W, LaGrange, Timothy E, Pratt, Dan W
Format:	Patent
Sprache:	eng
Schlagworte:	ALARM SYSTEMS AMMUNITION BASIC ELECTRIC ELEMENTS BLASTING EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING ELECTRICITY FIXED CONSTRUCTIONS HEATING INDUCTANCES LIGHTING MAGNETS MECHANICAL ENGINEERING MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS ORDER TELEGRAPHS PHYSICS SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES SIGNALLING SIGNALLING OR CALLING SYSTEMS TRANSFORMERS WEAPONS
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Beschreibung
Zusammenfassung:	A perforating gun includes a charge tube having shaped charges affixed thereto. Each shaped charge includes a radially outward pointing post adapted to receive a detonator cord. A retention member installed on the post provides a compressive force that energetically couples the detonator cord to the post. The radially outermost portion of the retention member is radially flush with or radially recessed relative to the radially outermost portion of each post. In one embodiment, the retention member has a rounded medial portion, a central opening and a pair of locking tabs that point radially inward to the central opening. Each post may include a slot for receiving the detonator cord and a circumferential groove that is adapted to receive the locking tabs.