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US 2017/0176152 A1Published application
Rf attenuating switch
AssigneeSchlumberger Technology Corporation
InventorKenneth Randall Goodman
Life of this patent
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Abstract
A radio frequency attenuating switch including a switch having a first input for connection to an electrical power supply and first and second output leads for connecting a device such as a detonator. One or more RF mitigation devices are connected within one or more of the output leads.
Claims20
A radio frequency (RF) attenuating switch, comprising:
- a switch;
- and
- a RF mitigation device connected in an input lead, a printed circuit board (PCB) and/or an output lead of a switch.
An explosive assembly, comprising:
- a switch comprising first and second input leads and first and second output leads;
- a detonator connected to the first and second output leads;
- a controller connected through the first input lead to the detonator when the switch is in a closed state;
- and
- a radio frequency (RF) mitigation device operationally connected between the controller and the detonator.
2 more elements
A method, comprising:
- deploying a perforating gun into a wellbore, the perforating gun comprising a firing head electrically connecting an electrical power source through a first switch to a first detonator connected to a first plurality of explosive charges and electrically connecting a second switch to second detonator connected to a second plurality of explosive charges, and a radio frequency (RF) mitigation device operationally connected between the electrical power source and the first detonator;
- and
- detonating the first plurality of explosive charges in response to closing the first switch thereby connecting an electrical power supply to the first detonator.
Dependencies are inferred from the claim text.