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    2.
    发明专利
    未知

    公开(公告)号：NO327870B1

    公开(公告)日：2009-10-12

    申请号：NO20076551

    申请日：2007-12-19

    Applicant: NORSK HYDRO AS

    Inventor： FALLET TRULS ,  FJALESTAD KJETIL ,  AASHEIM ROBERT ,  ALSTAD VIDAR

    IPC: G01F23/14 ,  G01L13/00 ,  G01N9/26

    Abstract: A method and equipment are provided for determining the level/height, of one or more interfaces between two or more fluid phases of different density that are contained in a vessel, tank or the like. The position of the different interfaces in a tank is determined by measuring the pressure thereby determining the density of the fluid over the height of the tank by using a pressure measuring rod, equipped with pressure sensors, positioned in the tank. A mathematical model or algorithm is used which calculates how the density and hence the pressure vary over the height of the tank as a function of the fluid properties of the respective fluids in the tank, the interface, on the basis of the density being the same within each layer of the respective fluid, as a respective point at which the density changes from one layer to the next in the tank.

    4.
    发明专利
    未知

    公开(公告)号：NO20076551L

    公开(公告)日：2009-06-22

    申请号：NO20076551

    申请日：2007-12-19

    Applicant: NORSK HYDRO AS

    Inventor： FALLET TRULS ,  FJALESTAD KJETIL ,  AASHEIM ROBERT ,  ALSTAD VIDAR

    IPC: G01F23/14 ,  G01L13/00 ,  G01N9/26

    Abstract: A method and equipment are provided for determining the level/height, of one or more interfaces between two or more fluid phases of different density that are contained in a vessel, tank or the like. The position of the different interfaces in a tank is determined by measuring the pressure thereby determining the density of the fluid over the height of the tank by using a pressure measuring rod, equipped with pressure sensors, positioned in the tank. A mathematical model or algorithm is used which calculates how the density and hence the pressure vary over the height of the tank as a function of the fluid properties of the respective fluids in the tank, the interface, on the basis of the density being the same within each layer of the respective fluid, as a respective point at which the density changes from one layer to the next in the tank.

    5.
    发明专利
    未知

    公开(公告)号：NO327020B1

    公开(公告)日：2009-04-06

    申请号：NO20063815

    申请日：2006-08-28

    Applicant: NORSK HYDRO AS

    Inventor： AASHEIM ROBERT ,  STETTE TAALE

    IPC: G01F23/22

    Abstract: A method calculates the boundary layer level between fluids, in particular the boundary layer level between oil and water in connection with the use of a segment-based boundary layer meter. The calculations are based on the use of measurement signals from a number of segments, n, and the boundary layer level, L, of the water is calculated as follows: L = &rgr; _ - &rgr; 0 &rgr; v - &rgr; 0 ⁢ ( L u - L l ) + L l where: Lu Upper water range area Ll Lower water range area &rgr;n Density of segment no. n from the profile meter {circumflex over (&rgr;)}n Corrected density for segment no. n &rgr; Calculated mean density &rgr;v Mean density of water from the profile meter &rgr;o Mean density of oil from the profile meter N Total number of segments included.

    9.
    发明专利
    未知

    公开(公告)号：NO20063815L

    公开(公告)日：2008-02-29

    申请号：NO20063815

    申请日：2006-08-28

    Applicant: NORSK HYDRO AS

    Inventor： AASHEIM ROBERT ,  STETTE TAALE

    IPC: G01F23/22

    Abstract: A method calculates the boundary layer level between fluids, in particular the boundary layer level between oil and water in connection with the use of a segment-based boundary layer meter. The calculations are based on the use of measurement signals from a number of segments, n, and the boundary layer level, L, of the water is calculated as follows: L = &rgr; _ - &rgr; 0 &rgr; v - &rgr; 0 ⁢ ( L u - L l ) + L l where: Lu Upper water range area Ll Lower water range area &rgr;n Density of segment no. n from the profile meter {circumflex over (&rgr;)}n Corrected density for segment no. n &rgr; Calculated mean density &rgr;v Mean density of water from the profile meter &rgr;o Mean density of oil from the profile meter N Total number of segments included.

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