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1. (WO2018182446) SACRIFICIAL ANODE DEVICE, WELL DOWNHOLE ASSEMBLY AND METHOD OF SACRIFICIAL PROTECTION

Pub. No.:    WO/2018/182446    International Application No.:    PCT/RU2017/000196
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Sat Apr 01 01:59:59 CEST 2017
IPC: E21B 41/02
Applicants: OBSHCHESTVO S OGRANICHENNOI OTVETSTVENNOSTYU "PSS EXPORT" (OOO "PSS EXPORT")
ОБЩЕСТВО С ОГРАНИЧЕННОЙ ОТВЕТСТВЕННОСТЬЮ "ПСС ЭКСПОРТ" (ООО "ПСС ЭКСПОРТ")
Inventors: SHABALIN, Andrey Vasilievich
ШАБАЛИН, Андрей Васильевич
Title: SACRIFICIAL ANODE DEVICE, WELL DOWNHOLE ASSEMBLY AND METHOD OF SACRIFICIAL PROTECTION
Abstract:
A sacrificial anode device is proposed for well downhole equipment, comprising: an elongated sacrificial anode having a substantially cylindrical shape, and a reinforcing element having a substantially cylindrical shape and extending along the entire sacrificial anode and including ends that protrude beyond the sacrificial anode, wherein both protruding ends are provided with a thread, wherein a plurality of grooves is provided on the surface of the sacrificial anode, and the reinforcing element is a composite element including not fewer than two parts rigidly connected to each other by means of a connecting element of substantially cylindrical shape, wherein the diameter of the connecting element is less than the diameter of the component parts of the reinforcing element. The invention also relates to a well downhole assembly containing such a sacrificial anode device and a method for sacrificial protection.