WO2024218548 - DRILLING A MULTILATERAL CLOSED-LOOP GEOTHERMAL WELL

National phase entry is expected:
Publication Number WO/2024/218548
Publication Date 24.10.2024
International Application No. PCT/IB2023/054120
International Filing Date 21.04.2023
Title [English] DRILLING A MULTILATERAL CLOSED-LOOP GEOTHERMAL WELL [French] FORAGE D'UN PUITS GÉOTHERMIQUE EN BOUCLE FERMÉE MULTILATÉRAL
Applicants ** EAVOR TECHNOLOGIES INC. Suite 1100, 214 11th Avenue SW Calgary, Alberta T2R 0K1, CA
Inventors ** KUZYK, Roman c/o Eavor Technologies Inc. Suite 1100, 214 11th Avenue SW Calgary, Alberta T2R 0K1, CA VETSAK, Aleksandr c/o Eavor Technologies Inc. Suite 1100, 214 11th Avenue SW Calgary, Alberta T2R 0K1, CA HODDER, Mark c/o Eavor Technologies Inc. Suite 1100, 214 11th Avenue SW Calgary, Alberta T2R 0K1, CA
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Quotation for National Phase entry

Country Stages Total
China Filing 1207
EPO Filing, Examination 8274
Japan Filing 554
South Korea Filing 484
USA Filing, Examination 2635
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Total: 13154
Abstract [English] A method performed on a wellbore system with a first surface wellbore extending from a terranean surface to a subterranean zone, a second surface wellbore extending from the terranean surface to the subterranean zone and a plurality of connecting wellbores in the subterranean zone each connecting the first and second surface wellbores. A lateral wellbore is drilled using a drill string extending through the first surface wellbore. While drilling, flow of drilling fluid from the drill string is sealed against returning towards the first surface wellbore through the connecting wellbores. [French] L'invention concerne un procédé réalisé sur un système de puits de forage avec un premier puits de forage de surface s'étendant d'une surface terrestre à une zone souterraine, un second puits de forage de surface s'étendant de la surface terrestre à la zone souterraine et une pluralité de puits de forage de raccordement dans la zone souterraine raccordant chacun les premier et second puits de forage de surface. Un puits de forage latéral est foré à l'aide d'un train de tiges de forage s'étendant à travers le premier puits de forage de surface. Pendant un forage, un écoulement de fluide de forage provenant du train de tiges de forage est protégé contre un retour vers le premier puits de forage de surface à travers les puits de forage de raccordement.