US 12,078,461 B2
RF attenuating switch
Kenneth Randall Goodman, Richmond, TX (US)
Assigned to SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US)
Filed by Schlumberger Technology Corporation, Sugar Land, TX (US)
Filed on Jul. 19, 2021, as Appl. No. 17/378,826.
Application 17/378,826 is a division of application No. 15/195,757, filed on Jun. 28, 2016, granted, now 11,067,369.
Claims priority of provisional application 62/269,367, filed on Dec. 18, 2015.
Prior Publication US 2021/0341265 A1, Nov. 4, 2021
Int. Cl. F42B 3/18 (2006.01); E21B 43/1185 (2006.01); F42B 3/182 (2006.01); F42B 3/188 (2006.01); F42D 1/04 (2006.01); F42D 1/05 (2006.01)
CPC F42B 3/18 (2013.01) [F42B 3/182 (2013.01); F42B 3/188 (2013.01); F42D 1/04 (2013.01); F42D 1/05 (2013.01); E21B 43/1185 (2013.01)] 20 Claims
OG exemplary drawing
 
1. 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.
 
10. 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.