Abstract: A sensor system and method for determining the vertical distance between a location (L) in a hydrocarbon reservoir (R) in a subterranean formation (F) and the free water level (FWL) in said reservoir. A sensor assembly (10; 10?; 10?; 10??) is configured for installation at a location (L) in a reservoir and comprises at least one sensor (11) in contact with or at least partly embedded in a porous material (13). At last a portion of the porous material comprises pores having hydrophilic surfaces, and the sensor is configured for measuring the water content in the porous material. Means are provided for determining the water saturation (SW) of the porous material and for estimating a pressure difference (PD) between the hydrocarbon pressure and the water pressure.

Abstract: A unitary junction for deployment in a wellbore, wherein the unitary junction permits electrical power and communications signals to be established in both a lateral wellbore and a main wellbore utilizing. The unitary junction assembly generally includes a conduit having a first upper aperture, a first lower aperture and a second lower aperture where the first lower aperture is defined at the distal end of a primary leg extending from a conduit junction and the second lower aperture is defined at the distal end of a deformable lateral leg extending from the conduit junction. A lower wireless energy transfer mechanism is positioned along at least one of the legs between the distal end of the leg and the junction. The lower wireless energy transfer mechanism is in wired communication an upper energy transfer mechanism permitting electrical communication to be established across the intersection of wellbore branches utilizing the unitary junction.

Abstract: A unitary multilateral junction for deployment in a wellbore, wherein the multilateral junction permits electrical power and communications signals to be established in both a lateral wellbore and a main wellbore utilizing capacitive coupling and a cavity resonator. The unitary junction assembly generally includes a conduit with a first upper aperture, a first lower aperture and a second lower aperture where the first lower aperture is defined at the distal end of a primary passageway extending from a conduit junction and a second lower aperture defined at the distal end of a lateral passageway extending from the conduit junction. A lower wireless energy transfer mechanism in the form of a capacitive coupler is positioned along at least one of the passageways between the distal end of the passageway and the junction. A cavity resonator is adjacent the capacitive coupler to enhance the electric field signal of the capacitive coupler.

Abstract: An electromagnetic flowmeter and a method for measuring a property of a fluid composition are provided. The electromagnetic flowmeter includes a first electric conductor with first and second ends, arranged inside a fluid conduit carrying a fluid composition comprising hydrocarbons, an RF electric signal source, and a first dual signal detector including first and second input ports. The first terminal of the electric signal source is connected to the first end of the first electric conductor and arranged to induce an RF electromagnetic wave in the fluid conduit by supplying an input electric signal to the first end of the first electric conductor. The first and second ports of the signal detector are connected to the first and second ends of the first electric conductor, respectively.

Abstract: A unitary multilateral junction for deployment in a wellbore, wherein the multilateral junction permits electrical power and communications signals to be established in both a lateral wellbore and a main wellbore utilizing. The unitary junction assembly generally includes a conduit with a first upper aperture, a first lower aperture and a second lower aperture where the first lower aperture is defined at the distal end of a primary passageway extending from a conduit junction and a second lower aperture defined at the distal end of a lateral passageway extending from the conduit junction. A lower wireless energy transfer mechanism is positioned along at least one of the passageways between the distal end of the passageway and the junction. The lower wireless energy transfer mechanism is in wired communication an upper energy transfer mechanism permitting electrical communication to be established across the intersection of wellbore branches utilizing the unitary junction.

Abstract: A unitary multilateral junction for deployment in a wellbore, wherein the multilateral junction permits electrical power and communications signals to be established in both a lateral wellbore and a main wellbore utilizing capacitive coupling and a cavity resonator. The unitary junction assembly generally includes a conduit with a first upper aperture, a first lower aperture and a second lower aperture where the first lower aperture is defined at the distal end of a primary passageway extending from a conduit junction and a second lower aperture defined at the distal end of a lateral passageway extending from the conduit junction. A lower wireless energy transfer mechanism in the form of a capacitive coupler is positioned along at least one of the passageways between the distal end of the passageway and the junction. A cavity resonator is adjacent the capacitive coupler to enhance the electric field signal of the capacitive coupler.

Abstract: A unitary multilateral junction for deployment in a wellbore, wherein the multilateral junction permits electrical power and communications signals to be established in both a lateral wellbore and a main wellbore utilizing. The unitary junction assembly generally includes a conduit with a first upper aperture, a first lower aperture and a second lower aperture where the first lower aperture is defined at the distal end of a primary passageway extending from a conduit junction and a second lower aperture defined at the distal end of a lateral passageway extending from the conduit junction. A lower wireless energy transfer mechanism is positioned along at least one of the passageways between the distal end of the passageway and the junction. The lower wireless energy transfer mechanism is in wired communication an upper energy transfer mechanism permitting electrical communication to be established across the intersection of wellbore branches utilizing the unitary junction.

Abstract: A unitary junction for deployment in a wellbore, wherein the unitary junction permits electrical power and communications signals to be established in both a lateral wellbore and a main wellbore utilizing. The unitary junction assembly generally includes a conduit having a first upper aperture, a first lower aperture and a second lower aperture where the first lower aperture is defined at the distal end of a primary leg extending from a conduit junction and the second lower aperture is defined at the distal end of a deformable lateral leg extending from the conduit junction. A lower wireless energy transfer mechanism is positioned along at least one of the legs between the distal end of the leg and the junction. The lower wireless energy transfer mechanism is in wired communication an upper energy transfer mechanism permitting electrical communication to be established across the intersection of wellbore branches utilizing the unitary junction.

Abstract: A unitary multilateral junction for deployment in a wellbore, wherein the multilateral junction permits electrical power and communications signals to be established in both a lateral wellbore and a main wellbore utilizing capacitive coupling and a cavity resonator. The unitary junction assembly generally includes a conduit with a first upper aperture, a first lower aperture and a second lower aperture where the first lower aperture is defined at the distal end of a primary passageway extending from a conduit junction and a second lower aperture defined at the distal end of a lateral passageway extending from the conduit junction. A lower wireless energy transfer mechanism in the form of a capacitive coupler is positioned along at least one of the passageways between the distal end of the passageway and the junction. A cavity resonator is adjacent the capacitive coupler to enhance the electric field signal of the capacitive coupler.

Abstract: A unitary multilateral junction for deployment in a wellbore, wherein the multilateral junction permits electrical power and communications signals to be established in both a lateral wellbore and a main wellbore utilizing capacitive coupling and a cavity resonator. The unitary junction assembly generally includes a conduit with a first upper aperture, a first lower aperture and a second lower aperture where the first lower aperture is defined at the distal end of a primary passageway extending from a conduit junction and a second lower aperture defined at the distal end of a lateral passageway extending from the conduit junction. A lower wireless energy transfer mechanism in the form of a capacitive coupler is positioned along at least one of the passageways between the distal end of the passageway and the junction. A cavity resonator is adjacent the capacitive coupler to enhance the electric field signal of the capacitive coupler.

Abstract: Wireless downhole sensor technology is being deployed in oil and gas wells. System components are inductively coupled, which enables remote placement of apparatus on the outside of wellbore conduit without the need for any wired connection. These systems make use of a pair of conductive elements that need to be aligned in the well. Embodiments of the present invention provide techniques to correctly space out the wellbore completion string so that the downhole conductive elements will be properly aligned and within proximity to establish wireless connectivity, as the wellbore completion string is set and the tubing hanger is landed inside the wellhead housing of the well.

Abstract: An electromagnetic flowmeter and a method for measuring a property of a fluid composition, a first electric conductor with first and second ends, configured to be arranged inside a fluid conduit carrying a fluid composition comprising hydrocarbons, an RF electric signal source, and Abstract a first dual signal detector comprising first and second input ports, wherein a first terminal of the electric signal source is connected to the first end of the first electric conductor and configured to induce an RF electromagnetic wave in the fluid conduit by supplying an input electric signal to the first end of the first electric conductor, the first and second ports of the signal detector are connected to the first and second ends of the first electric conductor, respectively.

Abstract: Wireless downhole sensor technology is being deployed in oil and gas wells. System components are inductively coupled, which enables remote placement of apparatus on the outside of wellbore conduit without the need for any wired connection. These systems make use of a pair of conductive elements that need to be aligned in the well. Embodiments of the present invention provide techniques to correctly space out the wellbore completion string so that the downhole conductive elements will be properly aligned and within proximity to establish wireless connectivity, as the wellbore completion string is set and the tubing hanger is landed inside the wellhead housing of the well.

Abstract: A leakage prevention module arranged to prevent fluid leakage from a tube connected apparatus arranged in the leakage prevention module, including a fluid tight trough including a drain in fluid connection with a drainage connection arranged to be connected to a drain tube, a wall with a recess where a lower end of the wall is fluid-tight fixed to the fluid tight trough such that the recess faces away from the drain. A first internal drain tube with a first end terminated in the recess and arranged to be connected to a drain tube from an apparatus and a second end in fluid connection with the drainage connection, a first feedthrough in the wall, a termination module arranged in the recess, where the termination module is arranged for terminating an inlet tube led in through the first feedthrough and further includes a first outlet arranged to be connected to a first supply tube to the apparatus.

Abstract: A method for in-situ determination of a wellbore formation pressure through a layer of cement, the method includes detecting an output pressure signal from a pressure sensor disposed in a housing in the cement outside a wellbore casing; detecting a first temperature signal from a first temperature sensor disposed in the housing; and calculating a temperature compensated output pressure signal based on the output pressure signal and the first temperature signal.

Abstract: Wireless downhole sensor technology is being deployed in oil and gas wells. System components are inductively coupled, which enables remote placement of apparatus on the outside of wellbore conduit without the need for any wired connection. These systems make use of a pair of conductive elements that need to be aligned in the well. Embodiments of the present invention provide techniques to correctly space out the wellbore completion string so that the down-hole conductive elements will be properly aligned and within proximity to establish wireless connectivity, as the wellbore completion string is set and the tubing hanger is landed inside the wellhead housing of the well.

Abstract: A Wellbore stress meter system and method for determining wellbore formation instability, comprising a first load cell, a first pressure sensor with a pressure output signal, a wireless communication system, a cable, and a surface device, said first load cell comprises; a second pressure sensor with a stress output signal, a cell element comprising a fluid, a first interface element in a first end of said first load cell with fluidly separated first and second surfaces wherein said first surface is in fluid communication with said fluid, and said first interface element moves relative said cell element as a function of a force applied on said first surface, and compresses said fluid acting on said second pressure sensor.

Abstract: A method for in-situ determination of a wellbore formation pressure through a layer of cement, the method includes detecting an output pressure signal from a pressure sensor disposed in a housing in the cement outside a wellbore casing; detecting a first temperature signal from a first temperature sensor disposed in the housing; and calculating a temperature compensated output pressure signal based on the output pressure signal and the first temperature signal.

Abstract: A wellbore E-field wireless communication system, the communication system comprising a first E-field antenna, and a second E-field antenna, wherein the first antenna, and the second antenna are both arranged in a common compartment, such as an annulus of a wellbore and further arranged for transferring a signal between a first connector of the first E-field antenna and a second connector of the second E-field antenna by radio waves.

Abstract: A pressure gauge system and a method for in-situ determination of a wellbore formation pressure through a layer of cement, comprising; a housing arranged to be permanently installed in said cement on the outside of a wellbore casing, comprising; a pressure transfer means between a first oil filled chamber and a pressure sensor, to isolate said pressure sensor from said oil filled chamber, and a pressure permeable filter port in hydrostatic connectivity with said first oil filled chamber, and a porous string extending from said filter port, said string has a higher porosity and a higher hydrostatic connectivity than said cement for said formation fluid, and is arranged to transfer said formation fluid when it is embedded in said cement.