Abstract: A multiphase pump includes a housing having a flow inlet and a flow outlet which are fluidly connected to each other via a flowpath, a rotor arranged in the flow path which propels a fluid from the flow inlet to the flow outlet via the flow path, the rotor has a longitudinal axis which extends for a length of the rotor and a multiphase impeller arrangement, at least one leak path which permits a reverse flow of the fluid from the flow outlet to the flow inlet, and at least one channel which is arranged within the housing, the at least one channel directs a liquid from a liquid source to one of the at least one leak path in the multiphase pump.

Abstract: A hanger running tool for installing a hanger in a well. The hanger running tool includes a central bore, a hanger engagement arrangement having an engaged position in which the hanger engagement arrangement is coupled to the hanger and a disengaged position in which the hanger engagement arrangement is decoupled from the hanger, and a pressure-controlled anchoring actuator which actuates an anchoring arrangement. The pressure-controlled anchoring actuator has an actuation surface. The hanger engagement arrangement has the engaged position in response to an increase in a pressure at a first pressure source, and the disengaged position in response to an increase in a pressure inside the central bore. The pressure-controlled anchoring actuator is actuated in response to an increase in a pressure on the actuation surface so that the anchoring arrangement anchors the hanger to an anchor point.

Abstract: An adapter for connecting a wet Christmas tree to an eccentric adapter production base. The adapter includes a hydraulic connector, a guide bushing which comprises penetrators for actuation of a dual sealing valve, hydraulic and electric plates with command and monitoring functions of resident equipment, two slide AI valves which provide a testable barrier of an annulus, an ROV panel which commands hydraulic functions, a top interface which interacts with the wet Christmas tree, a bottom interface which interfaces and/or communicates with the eccentric adapter production base and with a tubing hanger, a flow line connector with an integrated flow line mandrel, and a locking system with a sealing lip arranged inside the bottom interface. The top interface has a top guide funnel-shaped structure. The bottom interface has a structure of a connector and the guide bushing comprising the penetrators. The locking system interfaces with the eccentric adapter production base.

Abstract: A high voltage offshore power plant power distribution assembly (100) comprising, at a subsea location, two end transformers (10a) and one or more intermediate transformers (10b), wherein the respective end transformers and intermediate transformers comprise a housing (11), a transformer core and winding assembly (13) comprising a plurality of sets of utility windings (15) and a set of collection windings (17), a plurality of utility terminals (19) connected to utility windings, wherein at least some of the utility terminals are connected to offshore power providers (1, 3). A collection line (28) connects to the set of collection windings (17). The respective end transformers and one or more intermediate transformers further comprise two collection terminals (29) and a collection line branching (27) located inside the housing (11). The collection line branching (27) connects the two collection terminals (29) to the collection line (28).

Abstract: A mooring system includes a floater, a first anchor, a first mooring line, and a second mooring line. The first mooring line and the second mooring line are each connected to the first anchor and extend to the floater. The first mooring line is connected to the floater at a first connection point. The second mooring line is connected to the floater at a second connection point. The first connection point is spaced apart from the second connection point.

Abstract: A mooring system includes a floater, a first anchor, a first mooring line, and a second mooring line. The first mooring line and the second mooring line are each connected to the first anchor and extend to the floater. The first mooring line is connected to the floater at a first connection point. The second mooring line is connected to the floater at a second connection point. The first connection point is spaced apart from the second connection point.

Abstract: An assembly includes two tubular elements, a primary and a secondary seal arranged between the two tubular elements, a seal cavity formed between the two tubular elements and the primary and the secondary seal, and a seal monitoring apparatus having a housing and a position sensor. The housing has a chamber enclosing a separator which divides the chamber into a first and a second sub-chamber. The first sub-chamber is fluidly connected to the seal cavity and is filled with a hydraulic fluid. The separator is movable in a first direction relative to the housing to increase a volume of the first sub-chamber and decrease a volume of the second sub-chamber, and in a second direction to decrease the volume of the first sub-chamber and increase the volume of the second sub-chamber. The position sensor generates an electrical signal which represents a position of the separator relative to the housing.

Abstract: A wellhead system includes a wellhead assembly which is generally tubular, a landing string assembly, and an orientation sensor assembly which is mounted on the landing string assembly. The wellhead assembly is secured to a top of a borehole and has an orientation engagement part. The landing string assembly is lowered into the wellhead assembly to land in the wellhead assembly. The landing string assembly has an orientation part with an orientation feature. The orientation engagement part of the wellhead assembly corresponds to the orientation feature. As the landing string assembly is lowered into the wellhead assembly, the orientation feature engages with the orientation engagement part to rotate the landing string assembly about its longitudinal axis into a desired orientation relative to the wellhead assembly. The orientation sensor assembly measures an angular rotation of the landing string assembly about its longitudinal axis.

Abstract: A method for preventing damage to a multiphase pump includes measuring a differential pressure of a fluid across the pump and an axial position of a rotor of the pump over a time period, calculating a pressure fluctuation by measuring a difference between a maximum and a minimum value of the measured differential pressure over the time period, calculating a dynamic axial position by measuring a difference between a maximum and a minimum value of the measured axial position of the rotor over the time period, comparing the calculated pressure fluctuation with an expected pressure fluctuation value, comparing the calculated dynamic axial position with an expected dynamic axial position value, and selecting an operating condition of the pump based on the comparison of the calculated pressure fluctuation with the expected pressure fluctuation value and of the calculated dynamic axial position with the expected dynamic axial position value.

Abstract: The invention relates to an umbilical for use between an offshore construction (10) and a seabed installation (20), comprising one or more of longitudinal umbilical elements, such as one or more filler element, one or more signal cable, one or more fiber optic, one or more electrical power cable, and/or one or more load carrying element like carbon fiber rod, the umbilical further comprises at least one fluid pipe (1a, 1b) arranged within the umbilical (1), the longitudinal umbilical elements (1a, 1b) and the at least one fluid pipe (1a, 1b) are either laid in a continuous helix, or alternatingly/oscillatory laid within the umbilical. The at least one fluid pipe (1a, 1b) is a mix of at least one seamless pipe (1a) and at least one seam-welded pipe (1b), the at least one seamless pipe (1a) and the at least one seam-welded pipe (1b) are spliced together at one or more predetermined locations in the longitudinal direction of the umbilical (1).

Abstract: A method for preventing damage to a multiphase pump includes measuring a differential pressure of a fluid across the pump and an axial position of a rotor of the pump over a time period, calculating a pressure fluctuation by measuring a difference between a maximum and a minimum value of the measured differential pressure over the time period, calculating a dynamic axial position by measuring a difference between a maximum and a minimum value of the measured axial position of the rotor over the time period, comparing the calculated pressure fluctuation with an expected pressure fluctuation value, comparing the calculated dynamic axial position with an expected dynamic axial position value, and selecting an operating condition of the pump based on the comparison of the calculated pressure fluctuation with the expected pressure fluctuation value and of the calculated dynamic axial position with the expected dynamic axial position value.

Abstract: An assembly includes two tubular elements, a primary and a secondary seal arranged between the two tubular elements, a seal cavity formed between the two tubular elements and the primary and the secondary seal, and a seal monitoring apparatus having a housing and a position sensor. The housing has a chamber enclosing a separator which divides the chamber into a first and a second sub-chamber. The first sub-chamber is fluidly connected to the seal cavity and is filled with a hydraulic fluid. The separator is movable in a first direction relative to the housing to increase a volume of the first sub-chamber and decrease a volume of the second sub-chamber, and in a second direction to decrease the volume of the first sub-chamber and increase the volume of the second sub-chamber. The position sensor generates an electrical signal which represents a position of the separator relative to the housing.

Abstract: A wellhead arrangement includes a valve tree arranged on a wellhead and a seal carrier with at least one seal. The valve tree includes an isolation sleeve. The seal carrier is arranged between the wellhead and the isolation sleeve.

Abstract: A method of monitoring a condition of a connection between two bodies which are connected using a connector. The connector has a sensor assembly which provides an output representing a degree of movement of one or both of the two bodies. The method includes installing the connector and the two bodies in a use position in which the connector joins the two bodies, and using the output from the sensor assembly and a numerical model to determine a force on one or both of the two bodies or of the condition of the connector. The numerical model is a record of test forces applied to a test element secured to the connector or of a test connector having a same configuration as the connector and a corresponding output from the sensor assembly of the connector or of the test connector during and/or after the application of each test force.

Abstract: A Christmas tree includes a main body, an bulkhead connector, a wet-mate connector, a cable, and a sensor. The main body has a first and a second main body end, and a further passage, and encloses a main passage. The further passage includes a first further passage end at a main body exterior and a second further passage end at the main passage, and extends from the first to the second further passage end. The bulkhead connector is secured to the main body exterior to close the first further passage end, and has a first and a second electrical connection. The wet-mate connector is mounted in the second further passage end to close the second further passage end. The cable transmits an electrical signal and connects the first electrical connection to the wet-mate connector. The sensor is arranged in the further passage and electrically connects to the second electrical connection.

Abstract: A process system includes a process module, an upstream pipe, a downstream pipe, an inlet pipe with an inlet isolation valve, an outlet pipe with a discharge isolation valve, a bypass with a bypass isolation valve, and a drainage line with a valve. The process module has an inlet, an outlet, and a drainage outlet. The inlet pipe fluidically connects the inlet of the process module to the upstream pipe. The outlet pipe fluidically connects the outlet of the process module to the downstream pipe. The bypass fluidly connects the upstream pipe and the downstream pipe via the bypass isolation valve. The drainage line fluidly connects the drainage outlet of the process module to the downstream pipe via the valve.

Abstract: A retrievable connection module for establishing a fluid flow between a subsea station and a subsea flow line. The connection module includes a first fluid port, a first connection profile, a second fluid port, a second connection profile, and a utility arrangement which alters or monitors an aspect or a characteristic of the fluid flow between the first and the second fluid ports. The first connection profile is releasably couplable to a flow line to permit a fluid communication between the flow line and the first fluid port. The second connection profile is releasably couplable to the subsea station to permit a fluid communication between a subsea well and the second fluid port. The first connection profile disconnects the flow line and restricts the fluid communication at the first fluid port. The second connection profile disconnects from the subsea station and restricts the fluid flow at the second fluid port.

Abstract: The invention relates to a gate valve assembly (20) for use in a subsea workover system comprising: —a valve block (22) having a flow path (21c); —valve seats (33, 34) located within the valve block (22) around a periphery of the flow path (21c), —a gate valve member (40) which is moveable across the flow path (21c) between a first position in which the flow path (21c) is open and a second position in which the flow path (21c) is closed; —said gate valve member (40) comprising a first portion (31) surrounding an opening (32) adapted to mate with the flow path (21c) when the gate valve member (40) is in the first position, said first portion (31) is provided with a cutting member (30) arranged on the periphery of the first portion (31) towards the opening (32).

Abstract: Power umbilical (1) comprising a plurality of power cables (7) for electric power transmission, elongated filler elements (5), and an outer sheath (3). The elongated filler elements (5) abut against each other at abutment faces (5a), thereby forming a complete ring enclosing the power cables (7). The elongated filler elements (5) comprise cable recesses (5b) within which the power cables (7) are embedded. The power umbilical (1) further comprises one or more friction control profiles (13, 15, 116), wherein the material of the friction control profile (13, 15, 116) is softer than the material of the elongated filler elements (5). The one or more friction control profiles (13, 15) are arranged in a deformed state.