The use of fully remotely installed retrofit tees for hot-tapping applications is an extremely attractive economic option for maximising the potential of oilfields. A diverless hot-tap tee system is in the process of being built and commissioned, with hyperbaric GMA (Gas-Metal Active) welding selected as the internal saddle seal welding method. Process capability has previously been demonstrated in the range of 145 to 1,000 m using a specially developed 1.0-mm metal-cored wire. This paper considers the performance and application of a 0.9-mm Inconel 625 wire for hot-tap welding. A direct comparison of the performance of the 2 wires is made: process and electrical stability; metallurgical analysis; and macro quality and mechanical properties.


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    Titel :

    Evaluation of welding procedures and consumables for hyperbaric GMAW for diverless retrofit tee hot-tap applications


    Weitere Titelangaben:

    Bewertung von Schweißverfahren und Verbrauchsmaterialien für das hyperbarische Gas-Metall-Aktivschweißen für das Anbauen von T-Rohren an in Betrieb befindliche Rohrleitungen ohne den Einsatz von Tauchern


    Beteiligte:
    Woodward, Neil (Autor:in) / Fostervoll, Hans (Autor:in) / Akselsen, Odd M. (Autor:in) / Ahlen, Carl Henrik (Autor:in) / Berge, Jan Olav (Autor:in) / Armstrong, Mike (Autor:in)


    Erscheinungsdatum :

    2008


    Format / Umfang :

    7 Seiten, 9 Quellen



    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




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