US 11,788,389 B2
Perforating gun assembly having seal element of tandem seal adapter and coupling of housing intersecting with a common plane perpendicular to longitudinal axis
Frank Haron Preiss, Bonn (DE); Thilo Scharf, Donegal (IE); Liam McNelis, Bonn (DE); Eric Mulhern, Edmonton (CA); David C. Parks, Calgary (CA); and Christian Eitschberger, Munich (DE)
Assigned to DynaEnergetics Europe GmbH, Troisdorf (DE)
Filed by DynaEnergetics Europe GmbH, Troisdorf (DE)
Filed on Apr. 2, 2021, as Appl. No. 17/221,219.
Application 15/617,344 is a division of application No. 15/287,309, filed on Oct. 6, 2016, granted, now 9,702,680, issued on Jul. 11, 2017.
Application 15/287,309 is a division of application No. 14/904,788, granted, now 9,494,021, issued on Nov. 15, 2016, previously published as PCT/CA2014/050673, filed on Jul. 16, 2014.
Application 17/221,219 is a continuation of application No. 17/007,574, filed on Aug. 31, 2020, granted, now 11,542,792.
Application 17/007,574 is a continuation of application No. 16/809,729, filed on Mar. 5, 2020, granted, now 11,608,720.
Application 16/809,729 is a continuation of application No. 16/585,790, filed on Sep. 27, 2019, granted, now 10,844,697, issued on Nov. 24, 2020.
Application 16/585,790 is a continuation of application No. 16/359,540, filed on Mar. 20, 2019, granted, now 10,472,938, issued on Nov. 12, 2019.
Application 16/359,540 is a continuation of application No. 15/920,812, filed on Mar. 14, 2018, granted, now 11,125,056.
Application 15/920,812 is a continuation of application No. 15/617,344, filed on Jun. 8, 2017, granted, now 10,429,161, issued on Oct. 1, 2019.
Claims priority of application No. 2821506 (CA), filed on Jul. 18, 2013.
Prior Publication US 2021/0222526 A1, Jul. 22, 2021
Int. Cl. E21B 43/1185 (2006.01); F42D 1/02 (2006.01); F42D 1/04 (2006.01); E21B 43/119 (2006.01); F42C 19/06 (2006.01)
CPC E21B 43/1185 (2013.01) [E21B 43/119 (2013.01); E21B 43/11855 (2013.01); F42C 19/06 (2013.01); F42D 1/02 (2013.01); F42D 1/04 (2013.01); F42D 1/043 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A wellbore tool string comprising:
a first perforating gun having a first gun carrier extending along a longitudinal axis;
a first shaped charge carrier provided within the first gun carrier, the first shaped charge carrier configured for receiving a first shaped charge;
a second perforating gun having a second gun carrier extending along the longitudinal axis;
a second shaped charge carrier provided within the second gun carrier, the second shaped charge carrier configured for receiving a second charge;
a tandem seal adapter (TSA) in sealing engagement with the first gun carrier, the TSA comprising:
a TSA body and a first seal element provided on an outer surface of the TSA body;
a bore extending through the TSA body; and
a bulkhead provided within the bore and configured to provide electrical connectivity through the bore, the bulkhead comprising:
an outer body provided within the bore and having a bulkhead surface perpendicular to the longitudinal axis in contact with the TSA, wherein the outer body is non-conductive; and
an electrical contact assembly extending through the outer body, the electrical contact assembly comprising a first electrical contact provided at a first end of the outer body; wherein:
the first perforating gun and the second perforating gun are coupled to each other at a coupling region;
the first gun carrier comprises first threads formed on the first gun carrier at a first end of the first gun carrier;
the second gun carrier comprises second threads formed on the second gun carrier at a first end of the second gun carrier;
the first threads are engaged with the second threads in the coupling region; and
the TSA is positioned inside the first gun carrier and inside the second gun carrier such that the first seal element, the first threads, and the second threads intersect with a common plane that is perpendicular to the longitudinal axis.