Patents Assigned to Roxar Flow Measurement AS
  • Patent number: 12253395
    Abstract: Pipe section for flow measurements including measuring antennas configured to measure predetermined characteristics of fluid inside the pipe section. The pipe section includes an input end and an output end having a predetermined dimension. The pipe section includes a section having a first cross section in a first direction extending beyond the input and output dimension by a predetermined amount and a cross section in the second direction being perpendicular to the first direction having a dimension B being less than the dimension A in the first direction.
    Type: Grant
    Filed: March 23, 2021
    Date of Patent: March 18, 2025
    Assignee: Roxar Flow Measurement AS
    Inventors: Ebbe Gustaf Nyfors, Erik Undheim
  • Patent number: 12038392
    Abstract: The present invention relates to a system for measuring the water volume fraction (WVF) of a mixed fluid flow in a pipe, especially wet and dry gas hydrocarbon fluid flows, the system comprising a measuring unit for measuring the dielectric permittivity of said fluid mixture, a computing unit for calculating and storing both the WVF, based on the absolute level of the dielectric permittivity, and the statistical variation of the dielectric permittivity of said fluid mixture over a predetermined period of time. The system also including an analysis unit for detecting drift in the measured WVF by comparing and analyzing the development of the WVF versus the statistical variation of the permittivity over said time period, and based on detected drift to determine whether an apparent change in the WVF is reflected in a corresponding change in the statistical variation of the permittivity, and, based on said comparison, determining if the drift is caused by a real change in the WVF.
    Type: Grant
    Filed: February 13, 2020
    Date of Patent: July 16, 2024
    Assignee: Roxar Flow Measurement AS
    Inventor: Erik Undheim
  • Patent number: 11959785
    Abstract: A method for measuring conditions in a pipe includes measuring a chosen electrical characteristic in the flow, measuring the density in essentially the same flow volume, and calculating a curve representing the relationship between the density and the electrical characteristic. The method further includes at least one of calculating the derivative of the curve, indicating the water to liquid ratio of the flow volume, and extrapolating the curve to the value representing density at no liquid, the value of the electric characteristic representing the characteristic of a possible deposit layer on the inner surface of the pipe.
    Type: Grant
    Filed: May 6, 2020
    Date of Patent: April 16, 2024
    Assignee: Roxar Flow Measurement AS
    Inventor: Dag Erik Laumann
  • Publication number: 20230142240
    Abstract: Flow meter and method for measuring the flow velocity of an oil continuous multiphase flow, said flow including water droplets. The flow meter including at least one magnetic field generator configured to provide a magnetic field with a known strength into said flow, the flow meter also including at least one sensor for measuring the charge at the sensor relative to a ground level, the sensor being positioned at a distance from the center of the magnetic field axis and the flow axis, in essentially the same axial position as the magnetic field axis, wherein the meter also including a calculating means for calculating a measure of the flow velocity based on the measured charge.
    Type: Application
    Filed: June 11, 2021
    Publication date: May 11, 2023
    Applicant: Roxar Flow Measurement AS
    Inventor: Teerachai LEEUNGCULSATIEN
  • Patent number: 11415446
    Abstract: The present invention relates to a measuring system for measuring dielectric properties of a multiphase fluid flow in a pipe. The system includes a microwave signal generator connected to the multiphase fluid flow for transmitting signals within a predetermined frequency range into said flow, a signal receiver adapted to receive signals within said range from said flow, and analyzing means for calculating the dielectric properties based on the transmitted and received signals.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: August 16, 2022
    Assignee: Roxar Flow Measurement AS
    Inventor: Jone Svihus
  • Patent number: 11053751
    Abstract: Cable protecting device protects cables extending over a feature on a pipe surface. The feature is a known length outside the pipeline circumference and has a first and second end surface. The device has a length in the direction of the pipeline longer than the feature and includes a channel for enclosing the cable and a recess in the inner surface for containing at least a part of the feature. The ends of the device at least partially cover the corresponding parts of the feature ends. The length of the recess corresponds essentially to the length of the feature. Each end of the recesses is provided with engaging means adapted to engage with the corresponding end surfaces of the feature. The protecting device is made in one piece, including a flexible spring section in the section extending over the recess, between the first and second ends of the device.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: July 6, 2021
    Assignee: Roxar Flow Measurement AS
    Inventor: Terje Baustad
  • Patent number: 11016037
    Abstract: This invention relates to a system for measuring electrical characteristics of a multiphase fluid flow in a pipe, the system comprising an essentially coaxial insert in said flow defining an annular space between a chosen part of said insert and the pipe wall. The system including resonance measuring means including at least one first antenna, the resonance measuring means being adapted to transmit an electromagnetic signal into said volume within a frequency range comprising at least one predetermined resonance in said volume, the resonance measuring means also being adapted to measure the resonance properties in said volume, said resonance having an amplitude minimum in at least one known position in said volume and said first antenna positioned outside said known position of amplitude minimum.
    Type: Grant
    Filed: June 14, 2016
    Date of Patent: May 25, 2021
    Assignee: Roxar Flow Measurement AS
    Inventor: Ebbe Gustaf Nyfors
  • Patent number: 10852224
    Abstract: Method of measuring metal loss from equipment in process systems. Probes installed for monitoring one or both of erosion and corrosion (metal loss) in process equipment use results from resistivity measurements in a measurement element and a reference element to produce a measurement of metal loss in the measurement element exposed to process flow and may trigger an alarm when measured metal loss exceeds a threshold level. Prior art methods produce numerous false alarms hiding true alarms. The present method ignores these false alarms that are common in known methods by calculating confidence measures that are included in the metal loss calculations to attenuate noise that otherwise would produce false alarms or misinterpretation of the corrosion or erosion state in the process equipment being monitored.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: December 1, 2020
    Assignee: Roxar Flow Measurement AS
    Inventors: Olav Espejord, Cristian Mihai Iorga
  • Publication number: 20200116538
    Abstract: The present invention relates to a measuring system for measuring dielectric properties of a multiphase fluid flow in a pipe. The system includes a microwave signal generator connected to the multiphase fluid flow for transmitting signals within a predetermined frequency range into said flow, a signal receiver adapted to receive signals within said range from said flow, and analyzing means for calculating the dielectric properties based on the transmitted and received signals.
    Type: Application
    Filed: March 26, 2018
    Publication date: April 16, 2020
    Applicant: Roxar Flow Measurement AS
    Inventor: Jone SVIHUS
  • Patent number: 10359372
    Abstract: The present invention relates to a system for measuring conductivity in a multiphase fluid flow comprising a fraction of water, the system comprising a measuring section including means for emitting electromagnetic signals into a pipe containing said flow within at least one chosen frequency range and means for detecting resonant frequencies within said range. The measuring section comprising features for providing at least two resonanct frequencies within said at least one frequency range, the system also comprising means for based on at least a first resonant frequency and a first Q-factor related to the corresponding resonance peak as well as the Q-factor of a second resonance peak, calculating the conductivity of the water in said flow.
    Type: Grant
    Filed: February 3, 2014
    Date of Patent: July 23, 2019
    Assignee: Roxar Flow Measurement AS
    Inventor: Ebbe Gustaf Nyfors
  • Patent number: 10337260
    Abstract: This invention relates to a cable protecting device (5) for protecting cables (7) extending over a collar (2) on a pipeline (1), said collar extending around the circumference of the pipe and extending a known length outside said pipeline circumference, the collar having a first and second end surface, the cable protecting device (5) having a length in the direction of the pipeline being longer than the collar (2), and comprising a first recess along the inner surface for enclosing the cable (7) to be protected and a second recess in said inner surface for containing at least a part of the collar (2), the ends of said device at least partially covering the corresponding parts of the collar ends. The length of the second recess corresponds essentially to the length of the collar, each end of said second recess being provided with engaging means (4) adapted to engage with the corresponding end surface of the collar, thus fixing the protecting device (5) to the collar.
    Type: Grant
    Filed: October 7, 2016
    Date of Patent: July 2, 2019
    Assignee: Roxar Flow Measurement AS
    Inventor: Terje Baustad
  • Patent number: 10060869
    Abstract: The present invention relates to a system for measuring electrical characteristics of a fluid flowing through a section of a pipe, the system comprising a coaxial resonator, formed by an essentially coaxial insert in said pipe defining an annular volume between a chosen part of said insert and the pipe wall, said insert and pipe wall being made from an electrically conductive material, the system further comprising at least one antenna adapted to emit electromagnetic signals into and receive electromagnetic signals from said coaxial resonator, and means to measure the frequency response of said coaxial resonator within a frequency range including the waveguide mode TE11 of said coaxial resonator, The coaxial insert is mounted to the pipe wall through at least one support leg being positioned outside said annular volume, and one electrically conductive fin is positioned at least partially in the annular volume, said fin being positioned in a radial plane, said plane being different from the plane of said at le
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: August 28, 2018
    Assignee: Roxar Flow Measurement AS
    Inventor: Ebbe Gustaf Nyfors
  • Publication number: 20180113082
    Abstract: This invention relates to a system for measuring electrical characteristics of a multiphase fluid flow in a pipe, the system comprising an essentially coaxial insert in said flow defining an annular space between a chosen part of said insert and the pipe wall. The system including resonance measuring means including at least one first antenna, the resonance measuring means being adapted to transmit an electromagnetic signal into said volume within a frequency range comprising at least one predetermined resonance in said volume, the resonance measuring means also being adapted to measure the resonance properties in said volume, said resonance having an amplitude minimum in at least one known position in said volume and said first antenna positioned outside said known position of amplitude minimum.
    Type: Application
    Filed: June 14, 2016
    Publication date: April 26, 2018
    Applicant: Roxar Flow Measurement AS
    Inventor: Ebbe Gustaf NYFORS
  • Publication number: 20180045662
    Abstract: The present invention relates to a system for measuring electrical characteristics of a fluid flowing through a section of a pipe, the system comprising a coaxial resonator, formed by an essentially coaxial insert in said pipe defining an annular volume between a chosen part of said insert and the pipe wall, said insert and pipe wall being made from an electrically conductive material, the system further comprising at least one antenna adapted to emit electromagnetic signals into and receive electromagnetic signals from said coaxial resonator, and means to measure the frequency response of said coaxial resonator within a frequency range including the waveguide mode TE11 of said coaxial resonator, The coaxial insert is mounted to the pipe wall through at least one support leg being positioned outside said annular volume, and one electrically conductive fin is positioned at least partially in the annular volume, said fin being positioned in a radial plane, said plane being different from the plane of said at le
    Type: Application
    Filed: April 15, 2016
    Publication date: February 15, 2018
    Applicant: Roxar Flow Measurement AS
    Inventor: Ebbe Gustaf NYFORS
  • Patent number: 9759646
    Abstract: The present invention relates to a system for detecting deposits or chemical inhibitor close to or on the surface of electrodes or pins facing a fluid flow where any combination of the components oil, water, gas and a chemical inhibitor fluid could be present, and where the electrodes or pins are coupled to measuring means for monitoring the electrical characteristics of the flow, the electrical characteristics including the complex impedance or complex permittivity. The system comprises detecting means transmitting a signal indicating presence of deposit or chemical inhibitor if the real part of the complex impedance, in case of hydrocarbon continuous flow, or the imaginary part of the complex impedance, in case of water continuous flow deviates from predetermined limits related to the electrical characteristics of the said flow.
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: September 12, 2017
    Assignee: Roxar Flow Measurement AS
    Inventor: Dimitrios Oikonomou
  • Publication number: 20170191977
    Abstract: The present invention relates to a sensor assembly for measuring dielectric properties in a hydrocarbon fluid flow in a pipe, especially measuring salinity of said flow, comprising a microwave cavity resonator being adapted to be positioned in the wall of said pipe, and being designed to operate at a chosen resonant frequency. The sensor assembly also comprises a metallic plate at a distance from said sensor, wherein the plate defines a waveguide enclosing the microwave cavity resonator, the waveguide being open along the axis of the pipe for allowing said flow to pass through, the waveguide having a cutoff frequency being higher than the resonant frequency of the microwave cavity resonator.
    Type: Application
    Filed: May 29, 2015
    Publication date: July 6, 2017
    Applicant: Roxar Flow Measurement As
    Inventor: Ebbe Gustaf NYFORS
  • Publication number: 20170022767
    Abstract: This invention relates to a cable protecting device (5) for protecting cables (7) extending over a collar (2) on a pipeline (1), said collar extending around the circumference of the pipe and extending a known length outside said pipeline circumference, the collar having a first and second end surface, the cable protecting device (5) having a length in the direction of the pipeline being longer than the collar (2), and comprising a first recess along the inner surface for enclosing the cable (7) to be protected and a second recess in said inner surface for containing at least a part of the collar (2), the ends of said device at least partially covering the corresponding parts of the collar ends. The length of the second recess corresponds essentially to the length of the collar, each end of said second recess being provided with engaging means (4) adapted to engage with the corresponding end surface of the collar, thus fixing the protecting device (5) to the collar.
    Type: Application
    Filed: October 7, 2016
    Publication date: January 26, 2017
    Applicant: Roxar Flow Measurement AS
    Inventor: Terje BAUSTAD
  • Patent number: 9518460
    Abstract: Downhole gauge (1) assembly comprising a gauge housing (3) with a receiving aperture (32) having a sealing means (30) with an inner sealing surface (8). A gauge (4) is arranged in or in association to the gauge housing (3), a metal cable (7) with an inner bore is in communication with the interior of the housing (3). The cable runs from a downhole location to the top of a subsurface well. An electrical or optical conductor (9a, 9b) runs through the bore of the metal cable. The conductor (9a, 9b) is connected to the gauge (4) through a connector (5). The electrical or optical connector (5) is arranged within the gauge housing (3) and has been passed through said receiving aperture (32) of the gauge housing (3). The inner sealing surface (8) seals on the outer surface of the metal cable (7).
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: December 13, 2016
    Assignee: Roxar Flow Measurement AS
    Inventors: Per Hassel Sørensen, Terje Baustad
  • Patent number: 9500042
    Abstract: This invention relates to a cable protecting device (5) for protecting cables (7) extending over a collar (2) on a pipeline (1), said collar extending around the circumference of the pipe and extending a known length outside said pipeline circumference, the collar having a first and second end surface, the cable protecting device (5) having a length in the direction of the pipeline being longer than the collar (2), and comprising a first recess along the inner surface for enclosing the cable (7) to be protected and a second recess in said inner surface for containing at least a part of the collar (2), the ends of said device at least partially covering the corresponding parts of the collar ends. The length of the second recess corresponds essentially to the length of the collar, each end of said second recess being provided with engaging means (4) adapted to engage with the corresponding end surface of the collar, thus fixing the protecting device (5) to the collar.
    Type: Grant
    Filed: May 6, 2014
    Date of Patent: November 22, 2016
    Assignee: Roxar Flow Measurement AS
    Inventor: Terje Baustad
  • Patent number: D924910
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: July 13, 2021
    Assignee: Roxar Flow Measurement AS
    Inventors: Dag Erik Laumann, Martijn Tol