... flux motor efficiency production monitoring coefficient cryogenic hydrogen hydrogen reservoir surveillance conductor hollow conductor cooling system prandtl number gnielinski pipe flow velocity stern thruster nusselt number fuel cell Proceedings of the Thirty-third (2023...

... ABSTRACT This paper deals with aseismic design for a gas pipeline, and describes the bending capacity for high frequency weld (HFW) line pipe. Full-scale bend testing was initiated using bending arms and progressed into the larger strain region using axial compressive load. Small-scale...

... to allow for the design of riser systems in challenging environments. reduction girth weld fatigue testing plane united states government pipe sample 2 resonant fatigue testing fatigue life wfe sample 1 weld thickness stress engineering service upstream oil & gas bend test stress...

... deployed as an elegant technical solution to optimize flow assurance management during the service life of production flowline. The electrical heating may be used continuously, at production stops and/or during tail production. Electrical heating has been used for several decades on onshore facility pipes...

... ABSTRACT The commonly used calculation formulas for headloss in inclined pipes are mostly based on gravity hypothesis, which cannot fully reflect the influence of solid particles. This paper studies and establishes a unified formula for headloss calculation in horizontal pipes, vertical pipes...

... ABSTRACT The purpose of the study is to discuss the influence of the air entrainment on the marine pipeline stability. It is important to prevent excessive air from entering the pipeline, which can affect the weight of the pipeline and lead to problems such as pipe instability, changes in pipe...

... and sedimentary flow regime. A truncation concentration was defined to enable the ERT concentration meter installed in the horizontal pipe to measure the transport concentration under sedimentary flow regime. For the test sand, the truncation concentration value was tested as 49%. The installation angle...

... ABSTRACT The unbonded flexible subsea pipes have been widely used for oil and gas transportation in offshore energy exploration and development. The inner layer of flexible pipe is formed by corrugated inter-locked carcass. As the erosion of smooth pipes has been extensively studied...

... ABSTRACT The structure of unbonded flexible pipe is complicated that the characteristic of bending behavior is not clear. Based on the flexible pipe simplified to a spiral wire and cylindrical structure, a three-dimensional finite element model is developed with interaction between layers...

... ABSTRACT We carried out two preliminary experiments (under the atmospheric pressure and high-pressure conditions) to estimate the inside situation of the riser pipe and the risk due to freezing of the methane hydrate slurry during the transfer process, which are aiming to construct a numerical...

... the size fraction of the particles. For the investigation three different tests were conducted namely single particle test (SPT), cluster influence test (CIT), and area influence test (AIT). For the sucking of the particles, a suction pipe of 80 mm diameter was used. In the suction pipe two different...

... ABSTRACT In this paper, a mathematical model is newly developed to investigate the dynamic stability of aspirating pipe induced by solid-liquid two phase flow. Slip model is introduced to describe the slip characteristics of solid-liquid two phase flow. Harmonic differential quadrature method...

... ABSTRACT The layout of the sludge discharge pipeline is an important part of the dredging project. The commonly used floating pipes are often subject to wind and sun erosion during use, and the use of floating pipes for dredging operations in navigable waters can affect the normal navigation...

..., corrugated cryostat that is well-suited for onshore, in-plant and 1 km-applications (typ) but is not adapted to a subsea (externally pressurized) environment and long-distance (>10 km) operation. This work shows how a rigid pipe-in-pipe cryostat, based on field proven solutions, can provide a robust...

... ABSTRACT CRA (Corrosion-Resistant Alloy) composite pipe for submarine pipeline has both corrosion resistance and high strength, which can effectively solve internal corrosion caused by CO 2 or H 2 S in Offshore Oil and Gas Field. This paper summaries its classification, manufacture theories...

... ABSTRACT The cantilevered pipe is a novel and most challenging device in the floating structure of deep-sea mining, and is mainly used as a channel for transporting seabed ore bodies. The internal flow may cause the instability of the cantilevered pipe, which may lead to the failure of mining...

... ABSTRACT Vortex-induced vibration (VIV) is prone to be induced along marine pipelines under the influence of ocean currents, leading to fatigue damage. In this paper, a comparative study of the VIV response in relation to airfoil, textured and smooth pipes is carried out using the CFD method...

.... Therefore, the stability of offshore structures under wave conditions are particularly important. The target object for seawater cooling pipeline is the stability of pipes during wave attacks. Due to the light weight of HDPE pipe, the ballast is usually used to add to the pipe for the purpose of increasing...

... ABSTRACT The application of virtual reality technology in ship piping assembly was of great significance to reduce the piping interference and optimize the piping installation sequence and spatial layout. In order to evaluate the virtual assembly scheme of piping system in all aspects...

... ABSTRACT Pipe ends machining (counter-bore) is one of the practical approaches for improving the fatigue performance of a welding pipe. This approach makes the pipe end dimension within the range of the target internal diameter (ID) and wall thickness (WT), in order to reduce the ID stress...