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1. (WO2018178689) DOWNHOLE POWER DELIVERY

Pub. No.:    WO/2018/178689    International Application No.:    PCT/GB2018/050842
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Thu Mar 29 01:59:59 CEST 2018
IPC: E21B 47/12
E21B 33/134
E21B 41/00
E21B 17/02
Applicants: METROL TECHNOLOGY LTD
Inventors: HUDSON, Steve Martin
JARVIS, Leslie David
Title: DOWNHOLE POWER DELIVERY
Abstract:
A well installation comprising downhole power delivery apparatus for delivering electrical power from a surface power source S to a downhole tool T. The well installation comprises downhole metallic structure (2) running down into a borehole. The apparatus comprises an electrical cable (3) for carrying electrical power from the surface power source S, a power transfer arrangement (4) and a power pick up arrangement (5). The cable 3 runs down into the borehole together with the metallic structure (2) to the power transfer arrangement (4) which is provided at a first downhole location for transferring electrical power carried by the electrical cable (3) onto the downhole metallic structure (2) for onward conduction. The power pick up arrangement (5) is provided at a second downhole location, spaced from the first, for picking up electrical power from the downhole metallic structure (2) for supply to the downhole tool T.