... of the technology qualification process is given and is followed by a description of the qualification activities performed on the various sub-systems of the technology. From an electrical point of view for instance, studies and tests were performed for the qualification of an electrical insulation layer...

...-stressing process and operation. piping simulation friction contraction operation upstream oil & gas displacement inline bulkhead fe model offshore pipeline insulation bulkhead outer pipe piping design pip system inner pipe pipe design temperature end expansion pre-stressing...

... performance of resistive heating systems makes it possible to operate with low power consumption, which is a key in today's world of energetic efficiency. upstream oil & gas ehtf operation project execution project management insulation contractor heating electrically heat-traced flowline...

... insulation to higher electrical gradients has been now successfully qualified, allowing DEH to be applied on longer distance tie-backs than before Technology improvements A 3-year R&D on high frequency DEH gives both technical advantages for interference with other subsea equipment, reduced AC...

.... ( 2013 ). Flow assurance modeling using an Electrical Trace Heated Pipe-In-Pipe: From Qualification to Offshore Testing . OTC 2013 Abstract Standard pipe-in-pipe (PiP) technology consists of an inner flowline insulated with high performance dry insulation and an outer carrier pipe...

... purposes, spiraled against the inner pipe and covered by high thermal performance insulation allowing a high thermal system efficiency. The high thermal efficiency combined with a primarily resistive electrical system makes the ETH-PIP the most energy efficient active heating technology. Long power...

... offshore technology conference upstream oil & gas fluid temperature power requirement subsea multiphase cable diameter operation passive insulation fiber optic insulation requirement electrical distribution subsea production equipment deepwater opportunity electrically trace flowline...

... annulus between the 10" and the 16" allows for good insulation, and combined with reduced annulus pressure, a U-value of less than 0.5 W/m/K is achieved. Such a low U-value allows for a more passive system where only limited power is required for heating. The ærfugl EHTF system is based on a topside...

... Abstract Cool Down Testing (CDT) used to be an integral part of project execution justified in order to verify the thermal performance of an insulated subsea production system. To combat cost and schedule risk a joint venture set out to qualify Computational Fluid Dynamics (CFD) methods...

.... Utilization of non-evasive tools such as Real Time Radiography, Digital Radiography and Backscatter Computed Tomography to inspect composite wrap repairs and corrosion under insulation for insulated piping and pressure systems, eliminating the requirement to removal & reinstallation of insulation...

... ), Multiphase Flow and Thermal Analysis Of An Insulated Multiple Flowline Bundle , Proceedings of ETCE/ OMAE 2000 Joint Conference Energy for the New Millennium , February 14-17, 2000 , New Orleans, LA Churchill , S.W. ( 1973 ,) Empirical expressions for the shear stressing turbulent flow...

... & Exhibition - 2017 pipe scenario heating station insulation flowrate upstream oil & gas local heating station initial conventional loop conventional loop magnetic field tieback length requirement production logging piping simulation flowline production monitoring pipe...

... configuration that has been adapted and improved in order to include a heat tracing capability while optimizing laying rates. As commonly used in heat traced pipe in pipe concept (e.g. onshore applications), the electrical cables are wound around the inner pipe, covered with insulating material and enclosed...

... since 2009 within the framework of a cooperation between a major offshore contractor and a PiP design and manufacturing company. The low power consumption EHTF Technology is based on a field-proven, high performance PiP system. A specific insulation material arrangement (mineral/silica based...

.... The benefits and drawbacks of different power transformer arrangements are reviewed with available topsides electrical network (power balance / voltages / redundancy). Integrity monitoring and fault protection for local and remote topsides options are reviewed; specifically, the application of line insulation...

... (CIGRE) and the International Electrotechnical Commission (IEC) are considering creating standards and this paper proposes a basis for this. probability upstream oil & gas offshore technology conference termination limitation cable electrical stress extruded insulation protection...

... The purpose of a pipe-in-pipe flowline is to provide a highly insulated system to minimise the transfer of heat between the transported fluids and the surrounding ambient environment. The dry environment between the concentric pipes allows high performance dry insulation to be used, ultimately...

... such technique using the commercial software package StarCCM+. The approach builds a 3D CFD model for one entire tank, including insulation, filling and discharge pipes, gas vents, and (if necessary) cofferdam areas and internal tank structure. Hydrodynamics, thermodynamics, heat transfer through the insulation...

... are considered. The power cable consists of a longitudinally blocked, stranded conductor which is surrounded by an insulating core of semi-conducting and insulating layers thereof. The conductor has an effective blocking system that includes strand seal compound or a combination with water swellable elements...

... builds in part on prior work by the authors described in OTC 23143 [ 2 ], which revealed that the traditional elastomer packer seals used for non HPHT pipeline repair tools will extrude out of the packer cavity and leak when exposed to HPHT conditions that are common to thermally insulated flowlines...