US 12,123,273 B1
Wireline release head
John P. Roach, Fort Worth, TX (US); Daniel L. Tollefson, Aledo, TX (US); and Chris Payson, Fort Worth, TX (US)
Assigned to Reach Wireline, LLC, Fort Worth, TX (US)
Filed by Reach Wireline, LLC, Fort Worth, TX (US)
Filed on Apr. 8, 2022, as Appl. No. 17/658,629.
Application 17/658,629 is a continuation in part of application No. 17/228,201, filed on Apr. 12, 2021, abandoned.
Application 17/228,201 is a continuation of application No. 17/062,925, filed on Oct. 5, 2020, abandoned.
Claims priority of provisional application 62/911,490, filed on Oct. 7, 2019.
Int. Cl. E21B 29/04 (2006.01); E21B 17/02 (2006.01)
CPC E21B 29/04 (2013.01) [E21B 17/028 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A wireline release head system, comprising:
a housing;
a cutter box situated within the housing, the cutter box comprising a piston assembly operable to move within a first track, and a cutter knife operable to move within a second track; wherein the second track is angled relative to the first track;
a fire control switch in communication with a fire detonator, the fire detonator being selectively activatable to detonate a power charge;
a wireline extending through the cutter box and being in electrical communication with a control unit and the fire control switch;
a bulkhead; and
an interface member coupled to the bulkhead;
wherein:
the fire control switch is positioned within a cavity in the housing;
the bulkhead is positioned atop the cavity to isolate pressure within the cavity;
electrical leads from the fire control switch pass through the interface member and are electrically connected to a fire detonator, the fire detonator causing detonation of the power charge; and
the detonation of the power charge causes the piston assembly to move within the first track and contact the cutter knife, thereby causing the cutter knife to move within the second track, wherein movement of the cutter knife within the second track severs the wireline.