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1. WO2021041331 - A MULTILATERAL JUNCTION

Publication Number WO/2021/041331
Publication Date 04.03.2021
International Application No. PCT/US2020/047668
International Filing Date 24.08.2020
IPC
E21B 41/00 2006.01
EFIXED CONSTRUCTIONS
21EARTH OR ROCK DRILLING; MINING
BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
41Equipment or details not covered by groups E21B15/-E21B40/95
E21B 17/18 2006.01
EFIXED CONSTRUCTIONS
21EARTH OR ROCK DRILLING; MINING
BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
17Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings
18Pipes provided with plural fluid passages
E21B 43/12 2006.01
EFIXED CONSTRUCTIONS
21EARTH OR ROCK DRILLING; MINING
BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
43Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
12Methods or apparatus for controlling the flow of the obtained fluid to or in wells
CPC
E21B 17/042
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
17Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables;; Casings; Tubings
02Couplings; joints
04between rod ; or the like; and bit or between rod and rod ; or the like
042Threaded
E21B 41/0042
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
41Equipment or details not covered by groups E21B15/00 - E21B40/00
0035Apparatus or methods for multilateral well technology, e.g. for the completion of or workover on wells with one or more lateral branches
0042characterised by sealing the junction between a lateral and a main bore
Applicants
  • HALLIBURTON ENERGY SERVICES, INC. [US]/[US]
Inventors
  • STEELE, David Joe
  • JELLY, Christian Alexander
  • DAHL, Espen
Agents
  • HAYES, Thomas B.
  • COLLINS, Darren
  • GROSS, Charles
  • HILTON, Robert
  • KOWALIS, Brooke
  • LI, William
  • TEAKELL, Scott
Priority Data
62/894,58930.08.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) A MULTILATERAL JUNCTION
(FR) JONCTION MULTILATÉRALE
Abstract
(EN)
A multilateral junction comprising a y-block, lateral legs, and a transition sub for use in downhole well environments. The y-block includes a main bore and lateral bores with main bore and the lateral bores having threaded interfaces. The transition sub also includes lateral bores with threaded interfaces for receiving the lateral legs that also have threaded interfaces. The threaded interfaces of the lateral bore of the y-block has a less number of threads than the threaded interfaces of the lateral bores of the transition sub. The lateral leg includes another threaded interface that couples with the threaded interface of the lateral bore. Another end of each lateral leg includes an interface, e.g. a threaded interface, which couples with an interface of a transition sub. The main bore has an internal diameter that is greater than the internal diameter of the lateral bore.
(FR)
L'invention concerne une jonction multilatérale comprenant un bloc en y, des pattes latérales et un raccord de transition destiné à être utilisé dans des environnements de puits de fond de trou. Le bloc en y comprend un alésage principal et des alésages latéraux, l'alésage principal et les alésages latéraux ayant des interfaces filetées. Le raccord de transition comprend également des alésages latéraux avec des interfaces filetées destinées à recevoir les pattes latérales qui ont également des interfaces filetées. Les interfaces filetées de l'alésage latéral du bloc en y ont un nombre de filets inférieur à celui des interfaces filetées des alésages latéraux du raccord de transition. La patte latérale comprend une autre interface filetée qui s'accouple à l'interface filetée de l'alésage latéral. Une autre extrémité de chaque patte latérale comprend une interface, par exemple une interface filetée, qui s'accouple à une interface d'un raccord de transition. L'alésage principal a un diamètre interne qui est supérieur au diamètre interne de l'alésage latéral.
Also published as
Latest bibliographic data on file with the International Bureau