US 12,006,797 B2
Multilateral junction
David Joe Steele, Carrollton, TX (US); Christian Alexander Jelly, Perth (AU); and Espen Dahl, Stavanger (NO)
Assigned to HALLIBURTON ENERGY SERVICES, INC, Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on Aug. 24, 2020, as Appl. No. 17/001,412.
Claims priority of provisional application 62/894,589, filed on Aug. 30, 2019.
Prior Publication US 2021/0062618 A1, Mar. 4, 2021
Int. Cl. E21B 41/00 (2006.01); E21B 17/042 (2006.01)
CPC E21B 41/0042 (2013.01) [E21B 17/042 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An apparatus for communicating fluid in downhole well environments, the apparatus comprising:
a y-block having a main bore and a plurality of lateral bores formed therein, the main bore having a first end for coupling with a section of tubing and another end for coupling with a main bore leg, each lateral bore of the plurality of lateral bores having a threaded interface, the main bore having an internal diameter greater than the internal diameter of the lateral bores; and
a first lateral leg for a first lateral bore of the plurality of lateral bores, the first lateral leg having a first threaded interface to couple with the threaded interface of the first lateral bore, and a second threaded interface configured to couple with a first threaded interface of a transition sub; wherein the first lateral leg's first threaded interface has a different length than the first lateral leg's second threaded interface; wherein the first lateral leg's first threaded interface and the first lateral leg's second threaded interface are continuous along their length;
a second lateral leg for a second lateral bore of the plurality of lateral bores, the second lateral leg having a first threaded interface to couple with the threaded interface of the second lateral bore, and a second threaded interface configured to couple with a second threaded interface of the transition sub, wherein the second lateral leg's first threaded interface has a different length than the second lateral leg's second threaded interface; wherein the second lateral leg's first threaded interface and the second lateral leg's second threaded interface are continuous along their length;
wherein the first lateral leg and the second lateral leg are positioned to extend into a single borehole after the first lateral leg and the second lateral leg are coupled to the y-block,
wherein the first threaded interface of the transition sub has a greater number of threads than the second threaded interface of the first lateral leg, and wherein the second threaded interface of the transition sub has a greater number of threads than the second threaded interface of the second lateral leg, and
wherein the first threaded interface and the second threaded interface of the first lateral leg and the second lateral leg are at least partially and simultaneously threadedly engaged to the threaded interface of the first lateral bore, the threaded interface of the second lateral bore, the first threaded interface of the transition sub, and the second threaded interface of the transition sub.