Abstract: A safety node for a hydrocarbon extraction facility control system, the node comprising: a hydraulic input; a hydraulic output; a directional control valve disposed between the hydraulic input and the hydraulic output; and a functional safety electronics module containing a logic solver in operable communication with the directional control valve; wherein the logic solver is configured to operate the directional control valve to permit hydraulic communication between the hydraulic input and the hydraulic output in response to the presence of a given condition and inhibit hydraulic communication between the hydraulic input and the hydraulic output in response to the absence of a given condition.

Abstract: A system to be used with one or more well slots in an oil and gas operation is disclosed. At least one manifold is associated with the one or more well slots and with first passage-ways for the one or more well slots. An intervention subsystem includes second passage-ways and a path selector valve. The path selector valve is selectable to associate together at least two of the second passage-ways, which enables a maintenance action to be performed for an intended well slot of the one or more well slots.

Abstract: A flexible pipe for subsea transportation of production fluids, a method of manufacturing flexible pipe body and a method of providing corrosion protection to armour wires of at least one tensile armour layer of a flexible pipe having a breached pipe annulus are disclosed. The flexible pipe comprises a fluid retaining layer, an outer sheath and at least one tensile armour layer comprising a plurality of helically wound monofilament armour wires of a first material, each having a non-circular cross section with an aspect ratio of greater than 1:2 disposed between the fluid retaining layer and the outer sheath. The tensile armour layer further comprises at least one helically wound elongate anode element substantially having a cross-section aspect ratio of 1:1 and comprising a further material, interposed between armour wires, the anode element cross section having an area that is 50% or less of a corresponding area of said non-circular cross section.

Abstract: A wellbore system includes a tubing hanger positioned within a wellhead and a Christmas tree (XT) coupled to the tubing hanger. The wellbore system also includes an annulus isolation device (AID). The AID includes a manual actuator configured to drive a wedge in a linear direction. The AID also includes a mating wedge arranged within an annulus flow path, the mating wedge configured to receive a force responsive to movement of the wedge. The AID further includes a stab coupled to the mating wedge, the stab configured to move in an axially downward direction responsive to movement of the mating wedge, the stab having a slotted portion moveable into alignment with an annulus passage to permit flow into the annulus flow path.

Abstract: A sealing arrangement for an oil and/or gas well, including a rotation portion and a sealing portion. Rotation of the rotation portion causes the sealing portion to engage a surface of the oil and/or gas well so as to substantially form a seal therebetween.

Abstract: A method of making a flexible pipe layer, which method comprises: commingling polymer filaments and carbon fibre filaments to form an intimate mixture, forming yarns of the commingled filaments, forming the yarns into a tape, and applying the tape to a pipe body to form a flexible pipe layer.

Abstract: An apparatus (10; 110; 310) for conveying a tool (12; 112; 312) into and/or from a well installation (W) comprises a conveying arrangement (16; 116; 316) configured for coupling to a housing (14; 114; 314) for receiving the tool to be conveyed (12; 112; 312). The conveying arrangement (16; 116; 316) includes an actuator arrangement (28; 128; 328) configurable between a retracted configuration and an extended configuration. The apparatus (10; 110; 310) is configured for location on a wellhead (WH) of the well installation (W), movement of the actuator arrangement (28; 128; 328) between the retracted configuration and the extended configuration moving the tool to be conveyed (12; 112; 312) into and/or from the housing (14; 114; 314) and thus into and/or from the well installation (W).

Abstract: A method and apparatus are disclosed for reducing flow induced vibration in at least one subsea structure. The method comprises the steps of, via at least one subsea acoustic sensor (190), detecting at least one characteristic associated with acoustic energy in sea water proximate to the sensor (190), responsive to the detected characteristic, varying at least one operational parameter of a fluid flowing along a fluid flow pathway associated with a pipe member (160).

Abstract: Flexible pipe body, a flexible pipe and a method of manufacturing pipe body are disclosed. The flexible pipe body comprises a tensile armour layer and a supporting layer radially outside, or radially inside, and in an abutting relationship with the tensile armour layer. The supporting layer comprises a helically wound constraining tape element and a helically wound electrically conductive tape element.

Abstract: A system includes a pumping unit and a base unit. The pumping unit includes a plurality of tubulars and two or more electric submersible pumps (ESPs). The pumping unit further includes a plurality of valves associated with the plurality of tubulars, the plurality of valves each independently moveable between respective open positions and closed positions, wherein respective positions of groups of valves corresponding to operational configurations selected to adjust operation of the two or more ESPs. The base unit is adapted to receive the pumping unit and includes a subsea connector for receiving a production line and directing production fluid toward the pumping unit. The base unit also includes an isolation valve.

Abstract: A subsea high integrity pipeline protection system including a fluid inlet, a fluid outlet, a first barrier valve connected between the fluid inlet and the fluid outlet, a second barrier valve connected between the first barrier valve and the fluid outlet, and a bypass circuit which allows fluid to circumvent the barrier valves when closed, wherein the bypass circuit includes first and second bypass valves connected in series, and a third bypass valve connected in parallel to the second bypass valve.

Abstract: A wellbore system includes a tubing hanger positioned within a wellhead and a Christmas tree (XT) coupled to the tubing hanger. The wellbore system also includes an annulus isolation device (AID). The AID includes a manual actuator configured to drive a wedge in a linear direction. The AID also includes a mating wedge arranged within an annulus flow path, the mating wedge configured to receive a force responsive to movement of the wedge. The AID further includes a stab coupled to the mating wedge, the stab configured to move in an axially downward direction responsive to movement of the mating wedge, the stab having a slotted portion moveable into alignment with an annulus passage to permit flow into the annulus flow path.

Abstract: A hose includes a generally cylindrical tubular structure with at least one layer of steel ligaments near the outer surface, the steel ligaments being enclosed within a tubular layer including polymeric material; the flexible hose also incorporates a multiplicity of sensing coils embedded within the tubular layer, each such sensing coil being a flat coil lying in a plane substantially parallel to the adjacent layer of steel ligaments, so that an axis of the coil orthogonal to the plane of the flat coil extends in a radial direction relative to the hose. Each such sensing coil may form part of an electronic module that also incorporates a signal processing circuit and an RE power-receiving and data-transmission circuit. When that portion of the hose is subjected to an alternating magnetic field, signals from the sensing coils can be analysed to deduce information about the stress in the steel ligaments.

Abstract: A composite for use in a flexible pipe body, said composite comprising: a first polymer layer, a second polymer layer that is bonded to the first polymer layer, and filler particles that extend from the first polymer layer into the second polymer layer, whereby the particles are partially embedded in both the first and second polymer layers.

Abstract: A flexible pipe body and a method of providing electrical continuity are disclosed. The flexible pipe body comprises a first armour layer formed from a helical winding of a metal tape element, a further armour layer formed from a helical winding of a further metal tape element, and at least one intermediate layer between the first and further armour layers, said intermediate layer comprising a helically wound electrically insulating tape element (8000, 8001, 8002, 8003, 8004) and a helically wound electrically conductive tape element (8100, 8101, 8102, 8103, 8104).

Abstract: A method and apparatus are disclosed for terminating flexible pipe body. The apparatus comprises an end fitting core portion (330), an end fitting termination portion (310) and a spacer ring member (335) locatable between the core portion (330) and the termination portion (310) for maintaining a whole anterior end surface of the core portion (330) and an opposed whole posterior end surface of the termination portion (310) in a spaced apart relationship.

Abstract: A device for measuring the rate of flow of a fluid comprising. The device includes a heating element, a housing, and a detector. The heating element is located in an interior of the housing, the housing defining a first thermal path from the heating element to a first region of an exterior of the housing and a second thermal path from the heating element to a second region of the exterior of the housing. The detector is configured to detect a property associated with transfer of heat from the heating element to the exterior of the housing. The first thermal path has a first thermal conductivity and the second thermal path has a second thermal conductivity. The first thermal conductivity is greater than the second thermal conductivity. The first region of the exterior of the housing is smaller than the second region of the exterior of the housing.

Abstract: A vent arrangement for a flexible pipe body. The vent arrangement comprises a vent valve and an annular region flushing valve. The vent valve is arranged to couple to an annular region access port of a flexible pipe end fitting such that the vent valve can vent fluid from the pipe body annular region. The annular region flushing valve is in fluid communication with the vent valve and the annular region access port. The annular region flushing valve is arranged to inject fluid into the vent arrangement for flushing the vent valve, the annular region access port or the pipe body annular region. An end fitting incorporating the vent arrangement, a flexible pipe comprising the end fitting and a flexible pipe body coupled to the end fitting, and a method of manufacturing a flexible pipe are also disclosed.

Abstract: An element for a bend restrictor including a first part and a second part which together provide a cavity for receipt of a flexible pipe, in use, the two parts are pivotably connected together at a first portion thereof and are releasably coupled or couplable together at a second portion thereof. Successive elements may be secured together to form a bend restrictor.

Abstract: A method and apparatus are disclosed. The method includes the steps of providing an elongate sheet having a uniform thickness and a first and further spaced apart long edge, to a first pair of a plurality of spaced apart pairs of opposed forming roller elements, and via the pairs of roller elements, progressively forming a cross-sectional profile in the sheet that comprises a body portion comprising a folded central region of the sheet and a first and further wing portion that each extend away from the body portion and terminate at a respective long edge of the sheet, and securing adjacent regions of the wing portions and/or opposed regions of the body portion together thereby providing a windable elongate tape element having laterally immobilised wing portions.