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.

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.

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

Abstract: A magnetic sensor array is presented for a well apparatus for determining the position of at least one movable component with respect to a fixed component of a downhole tool. The array comprises at least one conductor member having a plurality of contact regions spaced apart at first intervals of at least a first length along a longitudinal axis of said at least one conductor member and a plurality of magnetic sensors, each one of which is operably coupled to one of said plurality of contact regions and actuatable by a magnetic field from a magnetic actuator.

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.

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

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.

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.

Abstract: A multiphase meter system including: transmitting and receiving antennas in the flow pipe, wherein the receiving antennas are at different distances from the transmitting antenna, and a control system configured to: apply an electromagnetic field to the transmitting antenna and receive signals from the receiving antenna induced in the fluid or the pipe by the transmission of the electromagnetic field; calculate a resonance quality of the signals received by at least one of the first and second receiver antennas; calculate composition or salinity of the fluid based on the resonance quality if the resonance quality is greater than a threshold value, and calculate composition or salinity of the fluid based on a transmission time difference of the signals received from the first receiver antenna and the signals received by the second receiver antenna if the resonance quality is below the threshold value.

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.

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).

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.

Abstract: Clamp (1, 1?) comprising a main body (3, 3?) adapted to encircle an inner element (101) or to be encircled by an outer element to which the clamp (1) can releasably connect. An axially extending opening extends through the main body (3, 3?). The clamp comprises a locking arm (5) which is connected to said main body (3, 3?) at a base end (7), and which can bend elastically to move its oppositely positioned free end (9) in a substantially radial direction. The locking arm (5) comprises a locking pad (13) at a distance from the base end (7), which in a locking position of the locking arm (5) extends radially beyond an inner (4) or outer (4?) diameter, respectively, of the main body (3, 3?). The locking pad (13) is adapted to engage with a recess (113) in said inner (101) or outer (101?) element.

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.

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.

Abstract: The present invention relates to an electrically insulating flexible laminate for positioning inside a pipe having a known inner circumference. The laminate has a first dimension extending a chosen length along the pipe and includes a first section comprising an electrically conductive area on an electrically insulating material and a second section being constituted by said electrically insulating material. The first and second section each has a second dimension at least exceeding said inner circumference of the pipe, the second section thus being adapted to cover said first section when positioned along the inner circumference of said pipe.

Abstract: The invention relates to a transmission system for transmitting signals between an inner and an outer unit separated by an annular pipe section wall, wherein said inner unit is provided with a first antenna and the second unit is provided with a second antenna, the antennas preferably constituted by coils, being adapted to be brought into essentially the same positions along the pipe section, wherein said pipe section is made from a material having low magnetic permeability and wherein at least one of the antennas is provided magnetic shield having high magnetic permeability, the corresponding antenna being positioned between the pipe wall and the magnetic shield and the magnetic shield extending along the length of the antenna.

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.

Abstract: A subsea pipeline (10) is provided with a valve (11) which can be operated between a closed position and an open position to establish access from the pipeline exterior to the pipeline interior. The valve (11) is provided with a connector (13) adapted to connect to a sampling tool (16) comprising one or more fluid sampling probes (21). During operation, the fluid sampling tool (16) is transported from a surface location by an ROV down to the subsea pipeline (10) and connected to the valve. Then, the ROV opens the valve (11), moves a sampling probe (21) from the fluid sampling tool (16), through the valve (11) and into contact with the fluid within the subsea pipeline (10) to take fluid samples from the same. When the sampling procedure is completed, the probe is returned back to the sampling tool, and the valve is closed. The ROV disconnects the sampling tool and returns the sampling tool (16) to the surface.

Abstract: Valve for throttling the flow rate of a fluid, distinguished in that it comprises a bolt (12), a pipe section (8) having inner dimension adapted to enclose the bolt sealingly, a groove (13) in at least one of the outer surface of the bolt and the inner surface of the pipe section, the groove providing a fluid passageway between the enclosed bolt and pipe section, an inlet port having fluid connection to an upstream end of the groove, an outlet port having fluid connection to a downstream end of the groove, and means to adjust a coaxial position of the bolt (12) relative to the pipe (8), by moving one or both of the bolt and pipe section, in order to adjust the throttling effect of the valve. System comprising valves of the invention.