There are 92 surface operated, wireline retrievable sub-surface safety valves installed in Amoco (UK) Exploaration Company's portions of the Leman, Indefatigable and Rough Fields. These valves are fail-safe in operation and offer a back-up shut-in safety system to all other safety shutdown devices on a platform. Therefore, each valve is function tested monthly. There are three types of valves in use in these feidls, the bypass type, the ball type and the flapper type. Records covering an eight year period were reviewed to provide data to determine a failure rate for each type of valve. Individual graphs were prepared showing each time a valve was pulled, and these were reviewed and summaries given to show how failure rates were determined. (Kursetz)


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    Titel :

    Experience with surface controlled sub-surface safety valves


    Weitere Titelangaben:

    Erfahrungen mit Oberflaechenkontrollierten Unterwasser-Sicherheitsventilen


    Beteiligte:
    Medley, E.L. (Autor:in)


    Erscheinungsdatum :

    1978


    Format / Umfang :

    6 Seiten, 1 Bild


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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