首页> 外文会议>International Conference on Offshore Mechanics and Arctic Engineering, Jun 23-28, 2002, Oslo, Norway >THERMAL ANALYSIS OF COMBINED ACTIVE HEATING AND PASSIVE INSULATION OF DEEPWATER PIPELINES
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THERMAL ANALYSIS OF COMBINED ACTIVE HEATING AND PASSIVE INSULATION OF DEEPWATER PIPELINES

机译:深度管道主动加热与被动绝缘相结合的热分析

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摘要

In this paper, we first present a global heat balance analysis of typical deepwater pipelines for oil and gas production and show that active heating is necessary for long pipelines due to technical limitations of passive thermal insulation systems. Two methods of combined active heating and passive insulation are then considered. By the first method, active heating is provided by circulating hot water in annulus. Under certain simplifying hypothesis, we provide a close form analytical solution for the temperature profiles of the produced fluid and heat medium. By the second method, active heating is provided by electrical resistance on the inner steel pipe. For this case, we propose a heating method that minimises the power requirement for a given minimum temperature of produced fluid. Numerical results are shown for the second heating method. Significant, reduction in power requirement is achieved.
机译:在本文中,我们首先介绍了用于石油和天然气生产的典型深水管道的全局热平衡分析,并表明由于被动式绝热系统的技术局限性,长管道需要主动加热​​。然后考虑将主动加热和被动绝缘相结合的两种方法。通过第一种方法,通过在环状空间中循环热水来提供主动加热。在某些简化的假设下,我们为产出的流体和热介质的温度曲线提供了一种近似形式的分析解决方案。通过第二种方法,通过内钢管上的电阻提供主动加热。对于这种情况,我们提出了一种加热方法,该方法可以在给定的最低采出液温度下最大程度地降低功率要求。显示了第二种加热方法的数值结果。显着地,降低了功率需求。

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