US 11,988,049 B2
Alignment sub and perforating gun assembly with alignment sub
Christian Eitschberger, Munich (DE); and Eric Mulhern, Edmonton (CA)
Assigned to DynaEnergetics Europe GmbH, Troisdorf (DE)
Filed by DynaEnergetics Europe GmbH, Troisdorf (DE)
Filed on Sep. 29, 2022, as Appl. No. 17/955,815.
Application 17/955,815 is a continuation of application No. PCT/EP2021/058182, filed on Mar. 29, 2021.
Application PCT/EP2021/058182 is a continuation of application No. 17/206,416, filed on Mar. 19, 2021, granted, now 11,339,614, issued on May 24, 2022.
Claims priority of provisional application 63/002,507, filed on Mar. 31, 2020.
Prior Publication US 2023/0016759 A1, Jan. 19, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. E21B 17/043 (2006.01); E21B 17/02 (2006.01); E21B 17/042 (2006.01); E21B 43/119 (2006.01)
CPC E21B 17/043 (2013.01) [E21B 17/028 (2013.01); E21B 17/0423 (2013.01); E21B 43/119 (2013.01)] 19 Claims
OG exemplary drawing
 
6. A perforating gun assembly comprising:
a first perforating gun housing;
a first shaped charge provided within the first perforating gun housing;
an alignment sub coupled to the first perforating gun housing, the alignment sub comprising:
a first sub body; and
a second sub body rotatably coupled to the first sub body via a non-threaded interface between an outer surface of the first sub body and an inner surface of the second sub body; and
a sub locking screw switchable between an unlocked state and a locked state such that, when the sub locking screw is in the locked state, a rotational position of the first sub body is fixed relative to a rotational position of the second sub body;
wherein the first sub body further comprises a channel provided on the outer surface of the first sub body;
the second sub body further comprises a socket extending through the second sub body at a position radially overlapping with the channel;
the sub locking screw is secured in the socket;
the outer surface of the first sub body includes a channel lip axially adjacent to the channel; and
an outer diameter of the first sub body at the channel lip is greater than an outer diameter of the first sub body at the channel.