.... The work performed covered the assessment of flexible risers, flowlines, umbilicals and rigid gas export line, comprising studies on operational history, simulations, in-loco special inspections (AUT, EMAT and Direct and Indirect flexible riser tensile armour inspections) and actual FPSO and risers...

... Abstract This paper presents the successful design and installation of the EHTF (Electrically Heat Traced Flowline) PLEM (Pipeline End Manifold) using the newly built, highly capable pipelay vessel, Seven Vega. This was achieved by taking advantage of Seven Vega's reel lay firing line...

..., chemicals, and controls for the tieback, and b) an Active Thermally Managed (ATM) flowline system that ties back the subsea wells to the host platform. A description of the principal components (topsides, hull, mooring, risers, subsea systems, and ATM flowline) is provided along with details of the NUI...

... Rock berms may also provide restraint against axial ‘walking’ caused by cyclic thermal expansion and contraction of flowlines. Walking is well recognised (see Carr et al. 2006 , Bruton et al. 2010 , Bruton 2017 , Tian et al. 2021 ) and driven mainly by heating and cooling during cycles...

... Abstract The High Performance DEH-PiP is a new technology for electrical heating of subsea tie-back flowlines, that minimizes disturbances to the construction and installation process wrt. to standard PiP avoiding the use of internal heating cable, while reaching the same electrical efficiency...

... Abstract The High-Performance DEH-PiP is a new technology for electrical heating of subsea tieback flowlines, able to be used for long distances thanks to an enhanced electrical efficiency. This paper describes the theoretical electrical model of this technology and its experimental...

... management fcm manifold kollsne reduction approx upstream oil & gas platform pipeline troll phase 3 tie-in spool production control reservoir surveillance flowline pressure drop module offshore technology conference valve tree development concept pipeline system Troll Unit...

... structure that provides a vertical out-of-straightness feature and a low friction surface for the pipe to move laterally at a pre-planned location. Sleepers can be made of reinforced cement concrete or of steel. Sleepers elevate the flowline from the seabed, forming design-acceptable spans. Single- or dual...

... objective is to reduce the number of tubes typically with one single heated flowline to avoid a long and costly service line or with one small power cable and local distribution of power to avoid a heavy and expensive large umbilical. Alternatively, power can be generated and stored at drill center location...

...The Rigid Pipeline – A Pursued Solution The 4.8km long flowline was designed to operate under high pressure and high temperature conditions (design pressure of 265bar @ 545m WD, design temperature of 90°C). A High Integrity Pressure Protection System (HIPPS) is located at the RSM manifold...

... Abstract Electrical heat tracing technologies for flowline applications have been in development phase for some time. Yet in recent years, the efforts to deploy this technology on real life applications have intensified, leading to several projects in the industry simultaneously adopting...

..., each connected to the FPU (Floating Production Unit) by a 6" ID gas injection flowline, a 6" ID water injection flowline and an electrohydraulic umbilical (EHU); Subsea manifolds for water and gas injection (MSIAG) for two wells, such that the connections between each well to the manifold...

... when the pressure and temperature reaches the thermodynamically stable hydrate zone. Hydrates can plug deepwater flowlines, which may lead to the rupture of flowlines and spill or leakage of oil and gas ( Sloan 2010 ). As a result, production and economic losses may exist during operation...

... management. If this oversight had made its way into the final design of flowline insulation, the tieback may well have plugged with wax deposits within a few years of operation. Use of complete forecasts within an integrated simulation framework prevents this kind of issue. Use of an inappropriate...

... and flowlines which inherently increase with length. These aspects, together with others independent from the length, such as power and space availability, have a significant impact and could result in making the project unfeasible or uneconomical. Technologies developed in recent years, or in their final...

... A new technology called Local Heating offers the possibility of significantly raising the temperature of the multiphase production fluid in order to improve flow assurance and consequently the economics of field developments. Heating the flowlines is a way to overcome the thermal constraints...

... sits in Shell's Azure cloud, accessible to Shell users from anywhere. Current RTS applications include virtual multiphase metering, blockage detection in wells/flowlines due to asphaltene/scale deposition, and a performance monitoring system for topsides process coolers designed to predict exchanger...

.... This study investigates each scheme by simulating, economically evaluating, and environmental impact assessing both schemes, to enable the right decision and selection of field development plan. separator pressure 700 corrosion resistance alloy flowline subsea scheme development scheme separator...

...Abstract Abstract Gas hydrate formation in oil and gas flowlines can represent a safety concern and a cause for hindered production, resulting in economic losses. Hydrate risk mitigation can be attained through hydrate avoidance or management strategies. Hydrate avoidance methods aim to keep...

... formation in an HP/HT well drilled with oil-based mud. Controlled downhole decompression of crude oil in the flowline at a sampling station in Norway enabled real-time measurement of its bubblepoint pressure to within 6 psi of that measured in the laboratory. Another case study integrates accurate relative...