Abstract: The present invention regards a subsea cooling unit comprising a first header pipe (48), a second header pipe (46) having its longitudinal axis substantially parallel with and in a distance from the first header pipe, and arranged between the first and second header pipe, at least one set of cooler coils (400); where the at least one set is formed such that the coils of the one set is arranged in one plane.

Abstract: A method for determining the flow rates of a multi-component mixture in a pipe including a gas phase and a liquid phase comprising an emulsion of oil and water, the emulsion being either of the water continuous type or the oil continuous type, the method comprising the following steps: a. the flow rates of the individual components of the multi-component mixture are measured, b. the Reynolds number of the multi-component mixture is measured, c. the emulsion type of the liquid phase of the multi-component mixture is determined, and d. based on the results from steps b and c, a more accurate flow-rate of the individual components of the multi-component mixture and a fluid property of at least one of the components of the multi-component mixture are calculated. An apparatus for performing the method is also disclosed.

Abstract: The present invention relates to a riser joint for a riser with a joint connecting two parts of a riser where the two parts are allowed angular displacement. According to the invention the riser joint comprises means for connection to the two parts of the riser at a distance from the joint, and means for adding a force between the two parts. The invention also relates to a method for reducing bending moments in a riser at a connection between the riser and a subsea installation.

Abstract: A method for removal of a compound from a crude hydrocarbon gas stream to be obtained from a sub-sea well is disclosed. The method comprises bringing the crude hydrocarbon gas stream in contact with a treatment solution comprising an absorbent at least partly selective to the compound to be removed, thereby obtaining a rich treatment solution and a compound depleted gas stream, regenerating the treatment solution comprising the absorbent by desorbing the compound from the rich treatment solution, thereby obtaining a compound stream.

Abstract: The present invention regards a subsea sand handling system for limiting abrasion of specific subsea equipment (5), comprising an inlet (10) connectable to a sand separation system (2) upstream of the specific equipment (5) and an outlet (18, 22) connectable to a pipeline (6) downstream of the specific equipment (5), wherein it comprises at least two collection vessels (11,14) and means for flushing (16,17,19,21) the sand out of at least one of the collection vessels (11,14), and the vessels (11,14) and the means for flushing (16,17,19,21) the sand out of said vessels (11,14) are configured such that sand is flushed from one vessel (11,14) while sand is collected in the other vessel (14,11). The present invention also regards a method for limiting abrasion of subsea rotating equipment.

Abstract: A method for determining the flow rates of a multi-component mixture in a pipe including a gas phase and a liquid phase, the method comprising the following steps: a. the flow rates of the individual components of the multi-component mixture are measured, b. the Reynolds number of the multi-component mixture is measured separately from the flow rate measurements, and c. based on the result from step a and b, a more accurate flow-rate of the individual components of the multi-component mixture is calculated. An apparatus for performing the method is also disclosed.

Abstract: The invention relates to a safety joint and a method of operation, the safety joint comprising: a first riser part and a second riser part overlapping in an axial direction and having end connections to be connectable as part of a riser, a release unit, locking the two riser parts together in a not activated mode, the release unit having other modes comprising a partly activated mode and fully activated mode, where the release unit comprises at least one axial extending tension rod connected between the two riser parts, which tension rod is configured to deform plastically before breaking, thereby activating the partly and fully activated modes.

Abstract: A well tool (10) for use in a well pipe comprises a housing (11) and a pulse generator (14) provided within the housing (11). The pulse generator (14) comprises an inductor (Ls), and a power supply device (HV, c) for supplying electrical power to the inductor (L) and thereby providing that an electromagnetic pulse is generated, in such a way that the electromagnetic pulse is providing physical vibrations in the well pipe. A cross sectional gap area (Agap) of an annular gap between a median of the inductor (Ls) and an inner surface of the well pipe is substantially equal to an inner cross sectional area (Ainner) of the inductor (Ls) up to the median diameter (d) of the inductor.

Abstract: The invention relates a cylinder release arrangement, wherein at least one cylinder is arranged with a piston within the cylinder, and a cylinder head closing off one end of the cylinder, forming a chamber between the piston and the cylinder head, wherein the cylinder is provided to arrange a leakage of fluid from one side of a piston to the other side of the piston, when the piston is in a given position within the cylinder, and release means are provided for the subsequently controlled release of the cylinder head from the cylinder. The invention also comprises a cylinder arrangement with a release mechanism.

Abstract: A method has been disclosed for determining a position of a water/cement boundary in an annular area between two concentric pipes in a hydrocarbon well. The method comprises the steps of running a well tool (10) into a central pipe of the well, where the well tool (10) comprises a tool housing (11), a pulse generator (14) and a signal recorder (16) provided within the housing (11); generating an electromagnetic pulse by means of the pulse generator, thereby providing physical vibrations in the central pipe of the well; recording reflected acoustic signals from the well by means of the signal recorder (16); repeating the generating and recording steps for different vertical positions of the pulse generator in the well; organizing the recorded signals in a two-dimensional representation; filtering the organized recorded signals in order to identify, in the two-dimensional representation, a hyperbola (B); and providing an apex of the hyperbola (B) as the determined position of the water/cement boundary.

Abstract: The present invention regards a valve arrangement comprising a housing and a mainly cylindrical valve element arranged rotatable within the housing, wherein the housing has at least one supply port, at least one exhaust port and at least one outlet/inlet opening. These ports and opening are arranged at a distance from each other along a rotation axis of the valve element. The valve element comprises at least one first bore extending along the rotation axis connecting the supply port with the at least one outlet/inlet opening in one position of the valve element, and at least one second bore extending along the rotation axis connecting the same outlet/inlet opening with the exhaust port in a second position of the valve element, the bores being configured such that they are separated from each other.

Abstract: A subsea system and an oil/gas outlet arrangement for splitting of oil and gas. The subsea system comprising a separator (1), the separator (1) comprising; at least one well flow inlet (13) for a multiphase flow mixture of at least oil and gas, an oil/gas outlet arrangement (15) arranged in a distance from the well flow inlet (13) over which distance the multiphase flow mixture separates in at least an oil phase (O) and a gas phase (G), the oil/gas outlet arrangement (15) comprising; at least one conical crown device (2), the conical crown device (2) having an outer wall with at least one cutout (4) extending through said outer wall, through which cutouts (4) the oil and gas flow into the crown device (2), each crown device (2) is in fluid connection with at least one fluid outlet (5, 6), and wherein the oil/gas outlet arrangement (15) comprises at least two fluid outlets (5, 6).

Abstract: The invention relates to a method and apparatus for determining the nature of a material in a cavity between one inner metal wall and one outer metal wall provided outside the inner metal wall. First a tool is located on the inside of the inner metal wall, where the tool comprises a pulse generator and a signal recorder. An electromagnetic short duration pulse is generated by means of the pulse generator, the pulse inducing mechanical vibrations in the walls. Data representing the reflections of the mechanical vibrations from said cavity is recorded by means of the signal recorder. The recorded data is analyzed to determine the nature of the material in the cavity.

Abstract: The present invention provides a seal element made in an elastomeric composite, said material comprising an elastomeric polymer and a phase change material (PCM), wherein the PCM is able to provide thermal energy to the elastomeric polymer upon cooling to the phase transition point of the PCM.

Abstract: The invention relates to a telescopic riser joint for connecting a first riser part and a second riser part, the riser joint comprising: a first pipe part (8) and a second pipe part (9) comprising means for connection to the first riser part and the second riser part respectively, which first and second pipe parts in use are arranged to form part of a riser with an internal flow passage, a cylinder arrangement comprising a first set of cylinders (32), each cylinder having a piston rod with a piston head (51) and a cylinder housing, the piston rod and cylinder housing being respectively connectable to one of the first pipe part or second pipe part, wherein one side of the piston head in use is in communication with external pressure providing an axial force acting in the longitudinal direction of the riser, and the other side of the piston head is facing a sealed chamber (52), where the cylinder arrangement is configured such that a fluid in the sealed chamber and a fluid on the other side of the piston head g

Abstract: The present invention relates to a method for performing well operations from a floating installation comprising a high pressure riser (8) connected to the floating installation through a tension system, and where the riser comprises a housing (18) with an internal diameter larger than an internal diameter of the riser and connected at the top of the riser, where it for performing operations is made an assembly (15) comprising a desired numbers of modules for use in a specific operation, the modules are assembled at the installation, then positioned in the housing and the operation is performed through the assembly.

Abstract: A method and an apparatus (280) for determining an estimate of a position of a hydraulic subsea actuator (200), wherein the hydraulic subsea actuator (200) has a fluid port (220) fluidly connected to a fluid source (260). The apparatus (280) comprises a hydraulic cylinder (310) connected in series between the fluid source (260) and the fluid port (220) of the hydraulic subsea actuator, and a movable piston (320) arranged in the second hydraulic cylinder (310), a position determining device, arranged to determine a position of the movable piston (320), and a signal processing device (350), arranged to calculate the estimate of the position of the hydraulic subsea actuator based on the position of the movable piston.

Abstract: The present invention regards a riser system comprising at least one riser extending from a subsea wellhead to a surface vessel, tension means for keeping the at least one riser tensioned, which tension means are connected to the vessel, a upper workover riser package (UWRP) located at the upper section of the riser and arranged to seal off the riser passage.According to the invention the UWRP is located below the connection point of the tension means to the vessel, giving the UWRP a position stationary relative a seabed, and that the UWRP comprises an interface adapted for the connection of different kinds of workover equipment. The invention also regards a method for inserting tools into a riser.

Abstract: A seal assembly (1) for a piping connection comprising; a first part (2) having at least one projecting rib (18) extending at least partially along an outer circumference thereof, and a second part (3) arranged to be attached to the first part, the second part being provided with at least one recess (16) on an inner surface thereof, which recess (16) is adapted to receive the projecting rib (18) when the first (2) and second (3) parts are connected, and the recess (16) has a larger cross-section area than the cross-section area occupied by the projecting rib (18) within the recess (16), such that when the first (2) and second (3) parts are connected, they are free to move relative to each other in at least one direction.

Abstract: The present invention regards a method for laying pipelines on the seabed comprising the steps of attaching an end (2) of the pipeline (1) to a structure (10, 20), lowering the structure with the pipeline to the seabed, allowing the pipeline end to pivot relative the structure, measuring the inclination of the pipeline end relative to the seabed, modifying a pipe spool such that one end is given the same inclination of the end as the pipeline and that at least one part of the pipe spool will be resting on the seabed after connection, connecting the pipe spool to the pipeline. The invention also regards a pipeline installation device where at least a one side of a top structure is allowed to move relative a foundation structure.