Selective firing system

Details Selective firing system Selective firing system

E - Fixed Constructions

21

B

166/13

E21B 43/116 (2006.01)

Patent

CA 1061248

Abstract of the Disclosure Selective firing system for gun perforating comprising in combination a surface control, and a subsurface master sub together with a multi- plicity of identical slave subs each operatively connected with a perforating charge and so interconnected that any of the slave subs may be armed and fired in any order under the control of the operator. - 1 -

281549

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