Drilling Risers

Bai, Yilong; Bai, Qiang

doi:10.1016/b978-008044566-3.50032-4

Cited by 14 publications

(22 citation statements)

References 4 publications

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“…For example, marine pipelines for the transportation of oil and gas are a safe and reliable part of the expanding infrastructure put in place for the development of the valuable resources below the world's seas and oceans [2]. The medium flowing from remote reservoirs to the extraction plant is a mixture of oil, gas, water and sand.…”

Section: Introductionmentioning

confidence: 99%

Effects of laser surface melting on erosion–corrosion of X65 steel in liquid–solid jet impingement conditions

Zhao

Wang

Zhang

et al. 2016

Wear

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Laser Surface Melting (LSM) has the potential to increase the resistance of steels to erosion-corrosion. In this study a submerged jet impingement system containing a brine under saturated CO2 conditions with sand has been used to assess the effect of LSM on the erosion-corrosion resistance of X65 steel. Erosion-corrosion rates under different experimental conditions were deduced based on CFD-simulated results and surface profile measurements. Scanning Electron Microscopy (SEM) was used to observe the morphology of erosion-corrosion damage. The results show that the erosion-corrosion rates at various impact angles can be decreased by LSM. Changes in microstructure, corrosion behaviour and hardness of X65 steel induced by laser treatment were analyzed by using optical microscopy, Transmission Electron Microscopy (TEM), Energy Dispersive X Ray analysis (EDX) together with electrochemical polarization and hardness distribution measurements, in order to clarify how laser treatment imparts the effects on the steel.

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Section: Introductionmentioning

confidence: 99%

Effects of laser surface melting on erosion–corrosion of X65 steel in liquid–solid jet impingement conditions

Zhao

Wang

Zhang

et al. 2016

Wear

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“…3). Additionally, as recommended in [1], it is assumed that the overall heat transfer coefficient is based on the inner diameter of the entire pipeline structure. It means that computations of all component heat transfer coefficients have to involve the inner diameter of the pipeline structure, represented by the inner diameter of the steel pipe, r i (p) (see Fig.…”

Section: Seabed Soil Models For a Totally Buried Pipelinementioning

confidence: 99%

“…semi-infinite soil layer) was proposed in the literature [1,5,6]. The half-space model is specially dedicated to the case where Eq.…”

Section: Soil Half-space Modelmentioning

confidence: 99%

“…Insulation manufacturers typically use a U-value based on the outer diameter of an entire pipeline structure, while pipeline designers use a U-value based on the inner diameter [1].…”

Section: Tab 1 Thermal Conductivities Of Selected Materials/substanmentioning

confidence: 99%

“…Taking into account a single cylindrical layer considered in the thermodynamic analysis, the heat transfer coefficient is given by the following equation (1) where: In order to describe geometrically a cylindrical thermal barrier, the following non-dimensional shape factor can be used (2) Comparing the last two equations, the shape factor of a single cylindrical thermal barrier takes the final practical form (3) It is obvious that the shape factor of a single cylindrical thermal barrier depends only on geometric dimensions, i.e. : the inner and outer radii of the cylindrical barrier.…”

Section: Single Cylindrical Thermal Bariermentioning

confidence: 99%

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Comparison of Soil Models in the Thermodynamic Analysis of a Submarine Pipeline Buried in Seabed Sediments

Magda

2017

Polish Maritime Research

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This paper deals with mathematical modelling of a seabed layer in the thermodynamic analysis of a submarine pipeline buried in seabed sediments. The existing seabed soil models: a "soil ring" and a semi-infinite soil layer are discussed in a comparative analysis of the shape factor of a surrounding soil layer. The meaning of differences in the heat transfer coefficient of a soil layer is illustrated based on a computational example of the longitudinal temperaturę profile of a -kilometer long crude oil pipeline buried in seabed sediments.

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Recycling decommissioned polyamide 11: An approach to handle a previously unwanted material

de Albuquerque Dias,

Veiga,

Gomes

et al. 2024

J of Applied Polymer Sci

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Polyamide 11 (PA11) is a polymer used in flexible lines for oil prospection due to its properties. After the decommissioning of the lines, the materials used are discarded in landfills or left in the ocean. As developing a sustainable economy is of utmost importance, reusing these discarded materials would be a step in the right direction. This research focused on examining two kinds of PA11 previously used in flexible lines to see their properties changed compared to virgin PA11 and to infer if they can still be reused. Chemical, thermal, and mechanical analysis were employed to analyze the PA11 that came from the two oilfields and recycled ones that were hot pressed with an unused PA11 in a 50/50 wt% proportion. Results indicate that one of the oilfield samples was less degraded than the other one, which provided better mechanical properties, and the same pattern happened with the recycled samples, indicating that some properties such as viscosity, plasticizer content, and crystallinity need to be evaluated before taking in consideration the reuse (be it recycling or repurposing) of this type of polymers in consideration.

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Drilling Risers

Cited by 14 publications

References 4 publications

Effects of laser surface melting on erosion–corrosion of X65 steel in liquid–solid jet impingement conditions

Effects of laser surface melting on erosion–corrosion of X65 steel in liquid–solid jet impingement conditions

Comparison of Soil Models in the Thermodynamic Analysis of a Submarine Pipeline Buried in Seabed Sediments

Recycling decommissioned polyamide 11: An approach to handle a previously unwanted material

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