首页>
外国专利>
System for use of the bracelet flow conductive anode for corrosion protection of the underground well casing sections are shielded by cement in the cellar area, equipment, and methods
System for use of the bracelet flow conductive anode for corrosion protection of the underground well casing sections are shielded by cement in the cellar area, equipment, and methods
展开▼
机译:用于地下井套管部分腐蚀防护的手镯式流动导电阳极的系统在地窖区域,设备和方法中被水泥屏蔽
展开▼
页面导航
摘要
著录项
相似文献
摘要
A cathodic protection system is provided for a subterranean well casing having an enclosed upper section of the well casing being substantially shielded by a cellar from an impressed-current cathodic protection circuit passing through earth media. The impressed-current cathodic protection circuit is provided to protect an unenclosed lower section of the well casing. To protect the enclosed upper section of the well casing, a supplemental cathodic protection circuit is provided. The supplemental cathodic protection circuit is a galvanic anode cathodic protection circuit comprising the enclosed upper section of the well casing and one or more bracelet galvanic anodes being circumferentially mounted to the enclosed upper section. The enclosed upper section of the well casing and the one or more bracelet galvanic anodes are substantially surrounded by a cellar backfill, and the galvanic anode cathodic protection circuit is equally effective throughout a broad range of non-homogeneity within the cellar backfill.
展开▼