| 摘要 |
<p>EXPLOSIVELY ACTUATED WELL TOOL HAVING IMPROVED DISARMED CONFIGURATION There is disclosed a single wire multiple shot selective fire perforating gun for piercing oil field tubular goods, typically during the process of completing an oil or gas well. A switch in the gun electrically isolates an associated blasting cap and short circuits the terminals thereof until the associated blasting cap and perforating element are armed. A plurality of blasting capperforating element assemblages are vertically disposed on the tool with the detonation of one perforating element arming the next adjacent blasting cap.</p> |
