US 12,286,867 B2
Self-shunting detonator for well perforating gun
Kevin C. Cook, Alvarado, TX (US); Matthew Craig Mlcak, Alvarado, TX (US); Joseph Todd MacGillivray, Alvarado, TX (US); and Stuart Michael Wood, Alvarado, TX (US)
Assigned to Halliburton Energy Services, Inc., Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on Nov. 17, 2022, as Appl. No. 17/988,913.
Prior Publication US 2024/0167368 A1, May 23, 2024
Int. Cl. E21B 43/1185 (2006.01); E21B 43/117 (2006.01); F42D 1/05 (2006.01); F42C 15/34 (2006.01)
CPC E21B 43/1185 (2013.01) [E21B 43/117 (2013.01); F42D 1/05 (2013.01); F42C 15/34 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A detonator for a perforating gun, the detonator comprising:
an electrically-conductive detonator body;
a resistor initiator inside the detonator body;
a grounding element inside the detonator body coupling the detonator body to a first lead of the resistor initiator;
an electrically-conductive clip having an interior portion coupled to a second lead of the resistor initiator inside the detonator body and an arm biased to electrical contact with an external surface of the detonator body to shunt the detonator,
wherein the arm is moveable away from the detonator body to un-shunt the detonator, and
an insulator cap closing an end of the detonator body, wherein the clip extends through the insulator cap to the resistor initiator;
wherein the electrically-conductive clip is a unitary structure from the arm to an end where the clip is coupled to the second lead of the resistor initiator, and
wherein the electrically-conductive clip comprises a straight section that extends from the resistor initiator to where it exits the detonator body through the insulator cap and a first bend to route the electrically-conductive clip from the insulator cap, and a second bend to route the arm of the electrically-conductive clip back toward the external surface of the detonator body, where the electrically-conductive clip electrically contacts the detonator body.