Abstract: A hydraulic valve comprises a plurality of ports, which communicate with a passageway, and a valve member movable in the passageway to control the communication between the ports. The valve member carries a lateral shear seal which is integral with the valve member and engages the passageway. In one position, the valve member isolates a first port from a second port. In another position of the valve member, the shear seal communicates with the first port and provides communication between the first port and the second port by way of a passage within the valve member. The valve member has first and second portions of different effective cross-section areas and on each portion an integral sealing member makes a radial seal between the valve member and the passageway. A supply port supplies pressure to the outside of the valve member so as to produce by virtue of the different cross-sectional areas a force tending to move the valve member towards a closed position.

Abstract: Connection assembly (I) for connecting a first and second pipe end (201, 301) of pipes (200, 300). The pipe ends exhibit outwardly facing pipe locking profiles (203, 303). Locking segments (101) are distributed about the second pipe end (301) and have a connected (103) and a movable portion (105) with segment locking profiles (103a, 105a). The movable portion (105) is pivotable between an inward locking position and an outward free position. Among the pairs of facing locking profiles, comprising a first pair including the segment locking profile (103a) and facing pipe locking profile (303) of the second pipe end, and a second pair, at least one pair exhibits an inclined face (S1, S2, S3) which is misaligned a misalignment distance (M1, M2, M3) with respect to the facing inclined face (P1, P2, P3) of the profile with which it engages.

Abstract: Subsea wellhead assembly with an inner bore for conduction of produced hydrocarbons, equipped with a cooling means for cooling a section of the wellhead assembly exposed to heating by said hydrocarbons.

Abstract: A method of monitoring an output signal of a switching-mode power supply for the presence and magnitude of the switching frequency comprises sampling the output signal at a sampling frequency above the minimum Nyquist limit to provide a succession of samples; cross-correlating a reference signal and the samples to provide cross-correlation values; and monitoring the cross-correlation values to ascertain the magnitude of a component of the output signal at or near the frequency of the reference signal.

Abstract: The invention provides a device for operative connection between a subsea step out cable far end and subsea loads such as pumps, compressors and control systems, distinctive in that the device is a rotating frequency stepper device, more specifically a rotating step up or step down device, and it comprises: a motor and a generator operatively connected so that the motor drives the generator, at least one gas and/or liquid filled vessel into which at least one of the motor and generator are arranged, and the step out length is long, which means long enough to cause problems due to the Ferranti effect at frequency and power levels feasible for subsea pump and compressor motors, and where the device via the step out cable receives input electrical power at a low enough frequency to have stable transmission and the device, operatively connected to the subsea motor, delivers an output electrical frequency, amperage and voltage feasible for operation of the connected motors.

Abstract: A riser clamp (1) made up of several parts and designed to carry a plurality of fluid pipes (11) in parallel with and spaced apart from a surface coated steel riser (10) is shown. The riser (10) itself is designed to be deployed into the sea for communication between a well head at the seabed and a surface vessel. Each riser clamp (1) is designed for frictional, non rotatable fixation to the surface coated riser (10) and is provided with a plurality of pipe saddles (V) to carry the respective fluid pipes (11). The riser clamp (1) has an internal abutment surface (2) made of fiber reinforced composite material which is configured substantially complementary to and designed to bear against the external, surface coated surface of the riser (10). The riser clamp (1) is tightened by means of circumferentially acting tightening means.

Abstract: Device for operative connection between a subsea step out cabie far end and subsea toads such as pumps, compressors and control systems, distinctive in that the device is a subsea DC provider (SDCP), and it comprises: a SDCP unit for altering alternating current power received from the step out cable to direct current power for delivery to said loads, a gas and/or liquid filled vessel into which said unit is arranged, and the device is a SDCP for subsea location at a far end of a subsea step out cable connected to at least one AC power source at the step out cable near end, and the step out length is long, which means long enough to cause, stability problems at frequency and power levels feasible for subsea pump and compressor motors, and where the device via the step out cable receives input electrical power at a low enough frequency to have stable transmission and the device, operativeSy connected to the subsea motors, delivers a DC output electrical amperage and voltage feasible for operation of connected

Abstract: A subsea monitoring device comprises a metal part (12) disposed in a polymeric sheath (11,14), and means (10) for providing a sensible indication of pH at an interface between the part and the sheath. The part may be the metal shell of a connector. When a cable (13) extends from the connector, adjacent the connector the cable would be covered by the polymeric sheath. The said means (10) may comprise a chemical indicator and the sheath is preferably sufficiently translucent to allow visual observation of the indicator. The chemical indicator may comprise phenolphthalein.

Abstract: A device for separating and collecting liquid in gas from a reservoir, which is attached to processing equipment (14, 15) for gas, said gas being delivered to the processing equipment from the device via an inlet pipe (24) to the processing equipment and the collected liquid is removed periodically from the device via liquid outlet pipe (7). The device is formed of a liquid separator (1) and a liquid collector (2) which are two separate chambers, and which are connected to each other via a valve (3), and that for draining of the collected liquid, the liquid collector (2) is connected to an outlet pipe (19) from the processing equipment via an intermediate valve (6), draining taking place with the aid of compressed gas which via the intermediate valve (6) is supplied from the processing equipment, or alternatively from onshore or a platform, from a gas pipe or a well stream gas pipe on the seabed or the like.

Abstract: Connector (100) with locking components (107) about a peripheral section of the connector. The locking components extend in an axial direction engage with the connector (100) at a first end and engage with a connecting part (201) at an opposite locking end with a locking profile (109). A radial locking movement of the locking end is provided by an axial movement of an actuation sleeve (113). The locking components (107) are arranged to pivot in a substantially radial direction, about their section of engagement with the connector (100), into and out of a locking position. The connector (100) comprises guiding plates (111) between the locking components (107) in the area of their locking ends. The guiding plates exhibit protective faces (111a) that extend further radially inwards than the locking profile (109) of the locking components (107) when the latter are in the outwardly pivoted position.

Abstract: A subsea wellhead assembly includes a wellhead body which disposed to support an isolation sleeve for a production tree and to support below the isolation sleeve a production casing hanger for a production casing string. The body also supports a second casing string outside the production casing string whereby to form an annulus between the casing strings. The body includes a passageway which is in communication with the annulus near a lower end of the body and extends upwardly within the wall of the body towards the upper end of the body. A valve is accommodated in the upper part of the body and provides controlled communication between the passageway and a port which can be coupled to the isolation sleeve. The valve is controllable from a production tree in particular is moveable between an open position and a closed position in response to fluid pressure applied to the valve from a production tree by way of the isolation sleeve.

Abstract: Internal tree cap (201) (ITC) adapted to be installed in the bore of a subsea well unit (301) or to an internal tubular element (303) of the same, comprising a locking element (209) for releasably locking the internal tree cap (201) to said subsea well unit (301) or internal tubular element (303). The ITC further comprises a fluid channel (215) extending through a fluid barrier between the lower and upper part of the internal tree cap (201), which fluid channel (215) is blocked by a burst element (217) adapted to break and open for fluid flow through the fluid channel (215) when exposed to a predetermined pressure difference over the burst element (217). The invention also relates to an ITC running tool (101) and a locking mechanism (117) for supporting the ITC in the tool.

Abstract: Internal tree cap (ITC) adapted to be installed in the bore of a subsea well unit or to an internal tubular element of the same, comprising a locking element for releasably locking the internal tree cap to said subsea well unit or internal tubular element. The ITC further comprises a fluid channel extending through a fluid barrier between the lower and upper part of the internal tree cap, which fluid channel is blocked by a burst element adapted to break and open for fluid flow through the fluid channel when exposed to a predetermined pressure difference over the burst element. The invention also relates to an ITC running tool and a locking mechanism for supporting the ITC in the tool.

Abstract: A connector includes a male flange and a female flange allowing to assemble a main tube and auxiliary line tubes. A locking ring assembles the male flange and the female flange. The locking ring is mounted mobile in rotation on the outer periphery of the male flange while cooperating with the outer periphery of the male and female flanges.

Abstract: A production flow base (1) for possible future branched connection onto a production manifold (10) in order to provide for the connection of at least two production jumpers extending from respective subsea Xmas trees onto the production manifold (10), is shown. The production flow base (1) is arranged as a retrofit module connectable to a single inboard hub (11) prearranged on the production manifold (10). The production flow base (1) includes a frame structure (2), piping (3), at least one connector (4) and guiding means (9). The frame structure (2) is arranged for landing on a supporting arrangement (12) projecting from a manifold structure (10). The piping (3) forms a branch terminating in a connector (4) and at least two outboard hubs (6).

Abstract: A power umbilical, a DEH power cable or general umbilical, including a plurality of high power cables for transfer of large amounts of electric energy, filler material in the form of stiff elongate plastic elements located at least partially around and between the high power cables, which together are collectively gathered in a spiraled bundle by means of a laying and closing operation, and a protective sheath that encapsulates the high power cables and the filler material is shown. The high power cables are at intervals in the longitudinal direction of the cables, provided with frictional material which cooperate with the filler material for frictional engagement with and load transfer between each other.

Abstract: The invention provides a gate valve for control of production of petroleum, distinctive in that the valve comprises a coating or hard facing on the internal bore surface exposed to flow of petroleum and associated fluids and solids.

Abstract: The invention provides a valve useful as a production valve in or connected to a production tree subsea, and other similar uses subsea or topside, the valve comprises a valve element, a valve element pressure housing, an actuator, a stem and a bonnet, the actuator is via the stem operatively arranged to close or open a fluid passageway through the valve element, the bonnet enclose the stem and is connected to the valve element pressure housing and seals are arranged between the stem and the bonnet for sealing against the pressure of the valve element pressure housing. The valve is distinctive in that the valve comprises at least one seal for sealing between stem and bonnet, the seal having identical inner sealing diameter against the stem and outer sealing against a single body or element of the bonnet.

Abstract: Subsea turbomachine for boosting the pressure of petroleum fluid flow from subsea petroleum productions wells or systems, comprising an electric motor and a compressor or pump driven by the electric motor, a fluid inlet and a fluid outlet, distinctive that the turbomachine comprises a pressure housing common for the electric motor or stator, and compressor, pump or rotor; a magnetic gear inside the common pressure housing for operative connection between the motor or stator and compressor, pump or rotor; and a partition inside the common pressure housing, arranged so as to separate a motor or stator compartment from a compressor, pump or rotor compartment.

Abstract: Apparatus for the insertion of a pack-off into a recess in a bore of a wellhead body includes an activating sleeve which has a portion disposed for engagement with the pack-off for the movement of the pack-off into the recess and body portions shaped for location on a datum member within the bore. The activating sleeve includes a plurality of apertures circumferentially spaced about the activating sleeve. A running tool which is adapted to move the activating sleeve into engagement with the pack-off carries spring-loaded dogs each disposed in one of the apertures. Each of a plurality of releasing pins is positioned such that it enters a respective one of the apertures when the activating sleeve has caused the pack-off to be located in the recess. The entry of the pins into the apertures causes depression of the dogs out of the apertures and allows the consequent release of the activating sleeve from the running tool.