Perforation method and apparatus

Details Perforation method and apparatus Perforation method and apparatus

2009-04-14

2011-10-04

Andrews, David (Department: 3672)

Wells

Processes

With indicating, testing, measuring or locating

C175S004510

Reexamination Certificate

active

08028751

ABSTRACT:
A signature element is attached to a downhole cable or other protected equipment and the signal from a signature position detector is used, at least in part, to control the orientation of a directed perforating device or other directional device. Signal emitting sources can include a radioactive material added to an encapsulating composition of a downhole cable.

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