Patent ID: 8157022
Filing Date: 2012-04-17
Classification: E21B

Abstract:
1. An apparatus string for use in a wellbore, the apparatus string comprising: a plurality of activation modules, each of said activation modules having first and second ends and comprising a device to be activated/initiated downhole; a plurality of battery-operated addressable initiators, where at least one of the plurality of initiators is operatively connected to at least one of the plurality of activation modules to activate/initiate said activation module when said initiator is addressed; and a wireless transmitter that is connected with and adjacent to the plurality of activation modules module, that receives configured to receive signals from the earth's surface and transmit signals to address the initiators in the apparatus string and signals to activate said activation modules, wherein the plurality of activation modules, the plurality of battery-operated addressable initiators and the wireless transmitter are configured to be positioned within a wellbore.