... ABSTRACT This article evaluates flow assurance by heat trace cables for wet insulated flowlines as an alternative to direct electrical heating or chemicals. Heat trace cables are attractive for their simple and flexible design and that they can be retrofitted. Case studies of a 14" flowline...

... ABSTRACT The double-curved plates forming is an important task in shipbuilding, and the line heating plate forming method is the traditional complex curved plate forming process. This paper proposes the double-sided electromagnetic induction line heating process used in plate forming. By using...

... ABSTRACT To accurately predict the stress state of hull stiffened plate structure after induction heating process, the intelligent algorithm of support vector machine (SVM) was studied to predict the residual stress distribution of stiffened plate structure after induction heating. Firstly...

... ABSTRACT Based on the enthalpy-porous medium theory, a mathematical model of the melting phase transition process of waxy crude oil in shipwreck oil tanks is established. The research results show that in the early stage of melting, the heating rate decreases with the increase of wax content...

... through adopting oxyacetylene torch as heat source along designed paths to generate non-uniform temperature distribution. Then surrounding cooling regions would prevent the expanding of heated zones to obtain non-uniform shrinkage strain distribution along thickness direction, and thus generate membrane...

... ABSTRACT In this study, the proposed linearized inherent strain method for predicting straightening of welded structures is investigated. Thermal elastic-plastic analysis is used to compute inherent strain of a thin flat plate caused by line heating. An accurate gas heat source model...

... ABSTRACT Plates with double curvature are widely used in shipbuilding, and induction heating for plate bending is usually employed in shipyards due to its advantages such as high precision, high efficiency and so on. In this study, induction heating equipment with high frequency and 25KW...

... ABSTRACT A development programme founded by the Norwegian Research Council for further increase the competitiveness of the direct electrical heating (DEH) technology was initiated in 2016 and will finish at the end of 2018. The partners in this project have long experience in development...

... Abstract Hydrate management by direct electric heating (DEH) has been in use for 15 years. The system has been continuously improved and adapted to the specific requirements during the development of new fields. Presently the system is designed for around 5 years of usage during the lifetime...

... Abstract Submarine XLPE (cross-linked polyethylene) insulated cables of wet design have been manufactured and delivered by Nexans for more than 40 years, including cables for Direct Electric Heating (DEH) of flowlines for the last 15 years. In a DEH system the cable is strapped (‘piggybacked...

... Abstract The manual flame heating has been used in the conventional line heating to form the curved plate. High frequency induction heating could be a good alternative process for the automation of line heating process because of its easiness to control the heat flux. The purpose of this study...

... and subsurface sediment motions. In this paper, a numerical approach is described to investigate the effects of gas hydrate dissociation induced by constant heating from a hot wellbore on sediment engineering properties and the radial extent of hydrate dissociation influence zone. The effects of the following...

... Abstract As it becomes profitable to extract oil and gas from smaller reservoirs, jumpers (t-offs) connected to the main flowlines become necessary. Hydrate management of these jumpers may be solved by electrical heating systems. This requires development of new subsea electric power...

... remediation heating inhibitor pipeline pigging asphaltene inhibition insulation pour point production chemistry deposition wax inhibition tech conf pipe wall remediation of hydrates upstream oil & gas active heating oilfield chemistry precipitation scale inhibition scale remediation wax...

...% after the thermal aging. pipe deformability heating offshore shear area uoe line pipe microstructure line pipe thermal aging heat treatment frequency distribution longitudinal direction uniform elongation crack arrestability polygonal ferrite shinohara Mass Production of X70...

... ABSTRACT In this study, the performance of the sea water cooling system was analyzed by comparatively testing its cooling performance against that of the following methods using diverse sea water heat sources and the existing deep sea water intake systems of the Deep Sea Water Research Center...

...-of-plane deformations between stiffeners are frequent. These deformations are usually straightened by correction heating (flame heating method). After correction heating, the blocks are lifted and moved by cranes to assemble it at dry-dock stage. After this lifting process, out-of-plane deformation again...

... Performance Characteristics of Tandem Heat Pump System using Deep Ocean Water Ho-Saeng Lee1, Hyeon-Ju Kim , Dong-Ho Jung1, Seung-Won Lee1 and Deok-Soo Moon1 Deep Ocean Water Application Center, Korea Ocean Research & Development Institute Goseong-gun, Gangwon-do, Korea . . ABSTRACT This study...

... EBSD Characterization of Arctic Steel during in situ Heating A. J. Enstad1, M. Karlsen1,2, S. P. Astad2, J. Hjelen1, J. K. Solberg1, O. M. Akselsen1,3 and E. Østby3 1 Norwegian University of Science and Technology. 2 Statoil ASA. 3 SINTEF. Trondheim, Norway ABSTRACT The present work involves...

... In plate forming by line heating the usage of water as a cooling source is common. However, the relationship between water-cooling and plate deformation is not well established. This reduces the possibility of automating the process. In order to solve this problem, the influence of the rate...