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1. WO2012145160 - GALVANICALLY ISOLATED EXIT JOINT FOR WELL JUNCTION

Publication Number WO/2012/145160
Publication Date 26.10.2012
International Application No. PCT/US2012/032029
International Filing Date 03.04.2012
IPC
E21B 19/16 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
19Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
16Connecting or disconnecting pipe couplings or joints
E21B 17/02 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
02Couplings; Joints
E21B 7/04 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
7Special methods or apparatus for drilling
04Directional drilling
CPC
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] (AllExceptUS)
  • ZIMMERMAN, Michael, Paul [CA]/[AU] (UsOnly)
  • STEELE, David, Joe [US]/[US] (UsOnly)
  • CHEN, Pao-shih [US]/[US] (UsOnly)
Inventors
  • ZIMMERMAN, Michael, Paul
  • STEELE, David, Joe
  • CHEN, Pao-shih
Agents
  • YOUST, Lawrence, R.
Priority Data
13/091,79121.04.2011US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) GALVANICALLY ISOLATED EXIT JOINT FOR WELL JUNCTION
(FR) JOINT DE SORTIE À ISOLATION GALVANIQUE POUR JONCTION DE PUITS
Abstract
(EN)
A well system for forming a window in a casing string positioned in a wellbore. The system includes first and second steel casing joints (462, 464) interconnectable within the casing string. An aluminum exit joint (460) is positioned between the first and second steel casing joints (462, 464). The aluminum exit joint (460) has a first interconnection with the first steel casing joint (462) and a second interconnection with the second steel casing joint (464). The aluminum exit joint (460) is operable to have the window formed therethrough. A first sleeve (470) is positioned within the first interconnection to provide galvanic isolation between the aluminum exit joint (460) and the first steel casing joint (462). A second sleeve (472) is positioned within the second interconnection to provide galvanic isolation between the aluminum exit joint (460) and the second steel casing joint (464).
(FR)
La présente invention concerne un système de puits pour la formation d'une fenêtre dans une colonne de tubage positionné dans un trou de forage. Le système comporte des premier et second joints de tubage en acier (462, 464) aptes à être connectés entre eux à l'intérieur du tubage. Un joint de sortie en aluminium (460) est positionné entre les premier et second joints de tubage (462, 464). Le joint de sortie en aluminium (460) présente une première interconnexion avec le premier joint de tubage en acier (462) et une seconde interconnexion avec le second joint de tubage en acier (464). Le joint de sortie en aluminium (460) peut être utilisé pour la formation d'une fenêtre. Un premier manchon (470) est positionné dans la première interconnexion pour fournir une isolation galvanique entre le joint de sortie en aluminium (460) et le premier joint de tubage en acier (462). Un second manchon (472) est positionné dans la seconde interconnexion pour fournir une isolation galvanique entre le joint de sortie en aluminium (460) et le second joint de tubage en acier (464).
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