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Svein Ove AANESLAND

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  • Hollen I Sogne, NO
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Patents Grantslast 30 patents

  • Information Patent Grant

    Dual gradient drilling system
    • Patent number 9,249,637
    • Issue date Feb 2, 2016
    • National-Oilwell Varco, L.P.
    • Frank B. Springett
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

  • Information Patent Application

    DUAL GRADIENT DRILLING SYSTEM
    • Publication number 20140102789
    • Publication date Apr 17, 2014
    • National-Oilwell Varco, L.P.
    • Frank B. SPRINGETT
    • E21 - EARTH DRILLING MINING