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Thermal insulation for ultra deep pipelines A research and evaluation program

机译：超深管道的绝热研究和评估程序

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With an increasing need for fully optimized sub sea and sub sea to surface fluid transferrnsystems, thermal insulation is widely recognized as a key point for flow management in deeprnand ultra deep offshore field developments.rnThe offshore industry is taking up this challenge through developments such as those in thernGulf of Guinea, and a wide evaluation program on materials suitable for the thermalrninsulation of pipelines and risers down to 3,000 m water depth is being carried out. Thisrninvolves the operator TotalFinaElf, contractors Bouygues Offshore and Stolt Offshore,rnBureau Veritas the certification authority, and the Ifremer and IFP research centers.rnEnlargement of the partnership to other companies in the form of a wider international JIP isrncurrently being considered.rnThe critical parameters of this project are the range of diameters, the potential laying methods,rnthe in-service conditions, the overall heat transfer coefficient, (around 2 W/m 2 .K or below),rnand the project has been limited to non-jacketed insulation systems such as coated linepipe orrnmolded shells around the linepipe.rnBased on these parameters, a material requirement has been supplied to the mainrnmanufacturers, resulting in the selection of about 15 materials (syntactic foams with differentrnresins, elastomer, etc). At the same time, an extensive testing methodology has beenrnimplemented, focusing on the initial physical, mechanical and thermal properties of thernmaterials and on the assessment of their evolution over a 10,000 hours ageing period, at fourrndifferent temperatures and up to 300 bar hydrostatic pressure.rnAs a main result the ageing tests will be used to analyze the plastification and hydrolysisrnphenomena, and to derive comprehensive models, in order to estimate the long-term behaviorrnof these materials.rnIn addition, the overall heat transfer coefficient will be evaluated on insulated prototype tubesrnsubjected to the service pressure, in order to quantify the correlation between ? laboratory ?rnand ? in-field ? conditions.rnOptimized material acceptance requirements specifications will be derived.
机译：随着对完全优化的海底和海底到地面流体传输系统的需求日益增长，隔热被广泛认为是深海和超深海海上油田开发中流量管理的关键点。海上工业正在通过诸如此类的开发来应对这一挑战在几内亚湾，正在对水深至3,000 m的管道和立管进行热绝缘的材料的广泛评估计划。这涉及运营商TotalFinaElf，承包商Bouygues Offshore和Stolt Offshore，证书颁发机构Bureau Veritas以及Ifremer和IFP研究中心。rn目前正在考虑以更广泛的国际JIP形式将伙伴关系扩大到其他公司。该项目包括直径范围，潜在的铺设方法，使用条件，总传热系数（大约2 W / m 2 .K或更低），并且该项目仅限于无夹套保温系统，例如根据这些参数，已向主要制造商提供了材料要求，从而选择了大约15种材料（具有不同树脂，弹性体等的等规泡沫）。同时，已经实施了广泛的测试方法，重点是材料的初始物理，机械和热性能，并评估了它们在四个不同的温度和高达300 bar的静水压力下在10,000小时的老化过程中的演变。主要结果是将进行老化测试以分析其塑化和水解现象，并得出综合模型，以评估这些材料的长期行为。此外，还将对隔热原型管评估整体传热系数。服务压力，以量化之间的相关性？实验室？现场？条件。将得出优化的材料验收要求规格。

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