US 11,913,310 B2
Solid state dual fire circuit
Stephen C. Masters, Pampa, TX (US)
Assigned to Hunting Titan, Inc., Pampa, TX (US)
Appl. No. 17/440,704
Filed by Hunting Titan, Inc., Pampa, TX (US)
PCT Filed Mar. 27, 2020, PCT No. PCT/US2020/025375
§ 371(c)(1), (2) Date Sep. 17, 2021,
PCT Pub. No. WO2020/198643, PCT Pub. Date Oct. 1, 2020.
Claims priority of provisional application 62/824,882, filed on Mar. 27, 2019.
Prior Publication US 2022/0170349 A1, Jun. 2, 2022
Int. Cl. F42D 1/055 (2006.01); E21B 43/1185 (2006.01); E21B 43/119 (2006.01)
CPC E21B 43/1185 (2013.01) [E21B 43/119 (2013.01); F42D 1/055 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A solid state dual fire circuit comprising:
a transformer with a primary coil, a first secondary coil, a second secondary coil, and a third secondary coil;
a first MOSFET (Q1), wherein the first MOSFET controls whether the bottom of the tool is shorted to ground;
a second MOSFET (Q5), wherein the second MOSFET engages or disengages a voltage clamp;
a third MOSFET (Q7), wherein the third MOSFET controls power to tools coupled to the perforating gun string; wherein the voltage clamp when activated energizes a detonator in the perforating gun string.