Field Joint Coating

Revestimiento térmico de juntas post soldadura efectuadas en ductos de acero revestidos con poliolefinas.

Abstract

It address developing thermal coating method clearances primary coating necessary to carry out welded joints of pipelines in offshore oil extraction. The coated tubes allow complying with the requirements imposed by the environment
in which they will operate: corrosion protection, thermal insulation, buoyancy and resistance to high pressures. However, it has not been able to find a satisfactory method for coating field joints in achieving prevent that its own operating conditions stimulate corrosive processes to irreversible damage to the ecosystem. After the foundation of the proposed project comes an innovative system based on the incorporation of “half shells” solid polypropylene, with tight dimensional tolerances to the cavities arising between the ends of two consecutive steel tubes and previously welded, making the link both between the half shells as the primary coating through a resistance welding process.