US 12,331,617 B2
Integrated junction and deflector assembly for multilateral well control
Christopher A. Grace, Carrollton, TX (US)
Assigned to Halliburton Energy Services, Inc., Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on Jan. 19, 2023, as Appl. No. 18/156,888.
Prior Publication US 2024/0247568 A1, Jul. 25, 2024
Int. Cl. E21B 41/00 (2006.01)
CPC E21B 41/0042 (2013.01) 20 Claims
OG exemplary drawing
 
1. A multi-bore junction assembly to be positioned in a multilateral well having a main wellbore and a lateral wellbore, wherein the multilateral well has an up-hole end and a downhole end, the multi-bore junction assembly comprising:
a deflector subassembly to be positioned at a junction between the main wellbore and the lateral wellbore, the deflector subassembly comprising,
a deflector sub that comprises,
a first deflector bore, wherein an up-hole end of the first deflector bore is radially offset from a downhole end of the first deflector bore;
a seal stinger to project from the downhole end of the first deflector bore and configured to be installed in a first Y-block bore within a Y-block sub; and
a slot sub; and
an outer sleeve positioned around the deflector subassembly, the outer sleeve having at least one pin, wherein the slot sub is to interact with the at least one pin, and wherein an annulus between the outer sleeve and the deflector subassembly is open to a second Y-block bore within the Y-block sub upon installation of the seal stinger in the first Y-block bore.