DOWNHOLE CATHODIC PROTECTION CABLE SYSTEM

摘要

A downhole cathodic protection cable system includes an attachment shoe (28 and 30) electrically connected to a metallic structure (22) at a distance substantially below the earth's surface, and an electrical cable (18 and 20) having a first end connected to a connection structure (32) substantially at the earth's surface and a second end electrically connected to the attachment shoe (28 and 30). The first end is connected through the connection structure (32) to provide current to the cable (18 and 20) sufficient to prevent substantial corrosion surrounding the attachment shoe (28 and 30).