Abstract: A fluid turbine-generator includes a pressure housing, a turbine having a fluid inlet and a fluid outlet, an electric generator, and a shaft which mechanically connects the turbine and the electric generator. The fluid inlet is connected to the turbine and is arranged to extend into the pressure housing. The fluid outlet is connected to the turbine and is arranged to extend out of the pressure housing. The turbine and the electric generator are each arranged inside the pressure housing. The shaft is arranged completely inside the pressure housing.

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: A fluid flow apparatus includes a body and an insulation system. The body has an exterior surface having a passage extending therethrough from a first to a second portion. The passage has first and second end portions adjacent to the first and second portions, respectively, and an intermediate portion extending between the first and second end portions. A cross-sectional area of the intermediate portion is larger than that of the first and second end portions. The insulation system has an outer and an inner liner. The outer and inner liners are arranged in the passage to engage with the body so as to line the passage and to provide a barrier between the body and a fluid flowing along the passage. The outer liner thereby engages with the body, and the inner liner is partially enclosed by the outer liner and the body at the first and second end portions.

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 methane production assembly comprising a subsea well (3) extending from the seabed to a methane hydrate formation (5). The assembly comprises a well casing (7) extending into the subsea well (3), a subsea well control assembly (9), a submersible pump (17) in fluid communication with the methane hydrate formation, and a methane-water separator (29) having a water outlet (31) and a methane outlet (32). The submersible pump is arranged above the subsea well.

Abstract: An AC transmission system for a power transmission to an offshore plant. The AC transmission system includes an onshore power station which transmits an electric power, an offshore plant which receives the electric power, a submarine cable which connects the onshore power station to the offshore plant, and at least one pipeline with an electrical heating system which is connected to the onshore power station through the submarine cable.

Abstract: A fluid flow apparatus includes a body and an insulation system. The body has an exterior surface having a passage extending therethrough from a first to a second portion. The passage has first and second end portions adjacent to the first and second portions, respectively, and an intermediate portion extending between the first and second end portions. A cross-sectional area of the intermediate portion is larger than that of the first and second end portions. The insulation system has an outer and an inner liner. The outer and inner liners are arranged in the passage to engage with the body so as to line the passage and to provide a barrier between the body and a fluid flowing along the passage. The outer liner thereby engages with the body, and the inner liner is partially enclosed by the outer liner and the body at the first and second end portions.

Abstract: An adapter assembly for connecting a flowline which includes an end portion to a subsea tree which includes a fluid line connector. The adapter assembly includes an adapter base, a first connection element which is connected to the adapter base and which connects to the fluid line connector of the subsea tree, and a flowline connector assembly which includes a second connection element which connects to the end portion of the flowline. The flowline connector assembly is attached to the adapter base. The adapter assembly connects to the subsea tree via the first connection element.

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 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 modular manifold system for connection to a header pipe. The modular manifold system includes a central hub which has a header pipe connection, a conduit connection arrangement arranged on the central hub, and a module connection arrangement arranged on the central hub. The header pipe connection defines a flow port which permits a fluid communication between the header pipe and the central hub. The conduit connection arrangement has a conduit connected thereto and defines a flow port which permits a fluid communication between the central hub and the conduit connected to conduit connection arrangement. The module connection arrangement defines a flow port which permits a fluid communication between the central hub and a connected module.

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.

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: 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.