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US 12,078,461 B2Granted
RF attenuating switch
AssigneeSchlumberger Technology Corporation
InventorKenneth Randall Goodman
Life of this patent
Estimating the term…
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 first input lead configured to receive electrical power from a controller;
- a second input lead configured to couple to the controller;
- a first output lead configured to operatively supply the electrical power to a detonator;
- a second output lead configured to couple to the detonator;
- a switch configured to selectively couple the first input lead and the first output lead such that the switch operatively supplies the electrical power to the detonator via the first output lead when the switch is in a closed state;
- and
- a RF mitigation device electrically connected between the switch and the first output lead such that the electrical power is operatively supplied to the detonator through the RF mitigation device.
4 more elements
An explosive assembly, comprising:
- a detonator;
- a radio frequency (RF) attenuating switch comprising:
- a first input lead configured to receive electrical power;
- a second input lead;
- a first output lead connected to the detonator;
- a second output lead connected to the detonator;
- a switch configured to selectively couple the first input lead and the first output lead such that the switch operatively supplies the electrical power to the detonator via the first output lead when the switch is in a closed state;
- and
- an RF mitigation device electrically connected between the switch and the first output lead such that the electrical power is operatively supplied to the detonator through the RF mitigation device;
- and
- a controller configured to control the switch and selectively the electrical power to the first input lead, wherein the controller is connected through the first input lead to the detonator such that, when the switch is in the closed state, the controller, the first input lead, the switch, the RF mitigation device, the first output lead, and the detonator are connected in series.
8 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 radio frequency (RF) attenuating switch to a first detonator connected to a first plurality of explosive charges and electrically connecting a second RF attenuating switch to a second detonator connected to a second plurality of explosive charges, wherein the first RF attenuating switch comprises:
- a first input lead configured to receive electrical power from the electrical power source;
- a second input lead;
- a first output lead connected to the first detonator;
- a second output lead connected to the first detonator;
- a switch configured to selectively couple the first input lead and the first output lead such that the switch operatively supplies the electrical power to the first detonator via the first output lead when the switch is in a closed state;
- and
- an RF mitigation device electrically connected between the switch and the first output lead such that the electrical power is operatively supplied to the first detonator through the RF mitigation device;
- and
- detonating the first plurality of explosive charges in response to closing the switch thereby supplying the electrical power to the first detonator.
7 more elements
Dependencies are inferred from the claim text.