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1. EP3568566 - CORRODIBLE DOWNHOLE ARTICLE

Office
European Patent Office
Application Number 18700247
Application Date 09.01.2018
Publication Number 3568566
Publication Date 20.11.2019
Publication Kind A1
IPC
E21B 33/12
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
33Sealing or packing boreholes or wells
10in the borehole
12Packers; Plugs
C22C 23/06
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
23Alloys based on magnesium
06with a rare earth metal as the next major constituent
E21B 34/06
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
34Valve arrangements for boreholes or wells
06in wells
CPC
C22C 1/02
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
1Making alloys
02by melting
C22C 23/06
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
23Alloys based on magnesium
06with a rare earth metal as the next major constituent
E21B 33/12
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
33Sealing or packing boreholes or wells
10in the borehole
12Packers; Plugs
E21B 34/06
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
34Valve arrangements for boreholes or wells
06in wells
Applicants MAGNESIUM ELEKTRON LTD
Inventors WILKS TIMOTHY
TURSKI MARK
MURPHY MATTHEW
Designated States
Priority Data 201700716 16.01.2017 GB
Title
(DE) KORRODIERBARER BOHRLOCHARTIKEL
(EN) CORRODIBLE DOWNHOLE ARTICLE
(FR) ARTICLE DE FOND DE TROU CORRODABLE
Abstract
(EN)
This invention relates to a magnesium alloy suitable for use as a corrodible downhole article. The magnesium alloy comprises: (a) 2-7wt% Gd, (b) 0-2wt% Y, (c) 0-5.0wt% Nd, and (d) at least 80wt% Mg, and has an elongation as measured by ASTM B557M-10 of at least 22%. The invention also relates to a downhole tool comprising the magnesium alloy, a method for producing a magnesium alloy, and a method of hydraulic fracturing comprising the use of a downhole tool comprising the magnesium alloy.

(FR)
Cette invention concerne un alliage de magnésium approprié pour être utilisé en tant qu'article de fond de trou corrodable. L'alliage de magnésium comprend : (a) 2 à 7 % en poids de Gd, (b) 0 à 2 % en poids de Y, (c) 0 à 5,0 % en poids de Nd, et (d) au moins 80 % en poids de Mg, et il présente un allongement tel que mesuré par ASTM B557M-10 d'au moins 22 %. L'invention concerne en outre un outil de fond de trou comprenant l'alliage de magnésium, un procédé de production d'un alliage de magnésium, et un procédé de fracturation hydraulique comprenant l'utilisation d'un outil de fond de trou comprenant l'alliage de magnésium.