US 12,435,605 B2
Tandem sub for self-orienting perforating system
Ryan Bradley, Pampa, TX (US); and Julio Cesar Veliz, Cypress, TX (US)
Assigned to Hunting Titan, Inc., Pampa, TX (US)
Filed by Hunting Titan, Inc., Pampa, TX (US)
Filed on Aug. 27, 2024, as Appl. No. 18/816,818.
Application 18/816,818 is a continuation in part of application No. 18/604,435, filed on Mar. 13, 2024, granted, now 12,228,019.
Application 18/604,435 is a continuation of application No. 18/310,352, filed on May 1, 2023, granted, now 11,959,367, issued on Apr. 16, 2024.
Application 18/310,352 is a continuation of application No. 17/821,784, filed on Aug. 23, 2022, granted, now 11,674,371, issued on Jun. 13, 2023.
Application 17/821,784 is a continuation of application No. PCT/US2022/073443, filed on Jul. 5, 2022.
Claims priority of provisional application 63/301,950, filed on Jan. 21, 2022.
Prior Publication US 2024/0418061 A1, Dec. 19, 2024
Int. Cl. E21B 43/119 (2006.01); E21B 43/117 (2006.01); F42B 3/02 (2006.01); F42B 3/103 (2006.01)
CPC E21B 43/119 (2013.01) [E21B 43/117 (2013.01); F42B 3/02 (2013.01); F42B 3/103 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A tandem sub, used to connect one or more perforating gun assemblies, comprising: a first rotational mechanism disposed within a first sleeve located at a first end, wherein the first rotational mechanism is adapted to engage with a first charge tube in a first perforating gun and allow the first charge tube to rotate freely; a second rotational mechanism disposed within a second sleeve located at a second end, wherein the second rotational mechanism is adapted to engage with a second charge tube in a second perforating gun and allow the second charge tube to rotate freely; and an outer tandem housing, wherein the outer housing is adapted to engage a first outer gun housing of the first perforating gun and engage a second outer gun housing of the second perforating gun; and a feed through bulkhead installed within a through passage, wherein the feed through bulkhead provides an electric contact between the first perforating gun and the second perforating gun while further providing a pressure seal between the first perforating gun and the second perforating gun.