BS EN 15112:2022 PDF

Scope: This document provides information on methods suitable for assessing the likelihood of leakage due to external corrosion of well casings and to evaluate the need for cathodic protection, as well as methods of providing cathodic protection to the external part of these wells in contact with the soil. It also defines requirements for monitoring of performance of CP systems. Onshore and offshore wells are included in the scope. However, for offshore wells where protection is provided by anodes on the wellhead structure, it is recognized that it might not be practical to achieve full protection of well casings. This document applies to any gas, oil or water well with metallic casing, whether cemented or not. However, in special conditions (shallow casings: e.g. 50 m, and homogeneous soil), EN 12954 can be used to achieve the cathodic protection and assess its efficiency. The general requirements of EN 12954 apply; this document details additional, specific, requirements for This document applies to production and injection wells. References later in this document to production also apply to injection.

BS EN 15112:2022 Referenced Document

EN 12954 Cathodic Protection of Buried or Immersed Metallic Structures - General Principles and Application for Pipelines*， 2001-01-01 Update

1970 BS EN 15112:2022 External cathodic protection of well casings (British Standard)
2006 BS EN 15112:2006 External cathodic protection of well casing
2004 BS EN 13636:2004 Cathodic protection of buried metallic tanks and related piping
1991 BS 7361-1:1991 Cathodic protection - Code of practice for land and marine applications