• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>ASME international pipeline conference >REMNANT LIFE ESTIMATION OF PIPELINES WITH INTERNAL CORROSION
【24h】

REMNANT LIFE ESTIMATION OF PIPELINES WITH INTERNAL CORROSION

机译：内腐蚀管道的残余寿命估算

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Situations can arise where the condition of a pipeline system is poorly known. This may be due to a variety of operational or commercial reasons. Failures will eventually occur if time dependent degradation mechanisms are active. While an appropriate response may be to inspect or hydrotest, this is generally not feasible within a short time frame and integrity assessments or replacements must therefore be prioritized. This paper looks at an ageing upstream pipeline system subject to internal corrosion. A case study is presented in which a system approaching its original design life is required to carry fluids from reservoirs now forecast to be productive for another 50 years. Fluids include sweet or sour gas, crude oil and injection water. Design data are available but inspection information is sparse with less than 10% of lines inspected by ILI; coupon data and well production forecasts are available. The challenge was to prioritize line replacements according to the remnant life of each pipeline, based on the limited available data. Current condition was measured for lines where ILI data were available. A corrosion risk assessment was conducted to identify credible degradation mechanisms. The pipelines were then grouped according to the fluids being transported. This enabled an estimate of current condition for all pipelines based upon the limited inspection and coupon data. In order to predict the remnant life it was necessary to estimate the future corrosion rates, again for all lines. A number of approaches could be used for estimating future corrosion rates. These include basing the rates on historical inspection data or using corrosion modeling techniques. The paper describes a hybrid method that synthesises these two approaches to allow a corrosion rate distribution to be postulated for calculating remnant life. In addition, the options for future corrosion rate estimation are described and the advantages and disadvantages of each one discussed.
机译：管道系统的状况不知名的情况下可以出现情况。这可能是由于各种操作或商业原因。如果时间相关的劣化机制是活动的，则最终将发生故障。虽然适当的响应可能是检查或加氢电阻，但这通常在短时间内不可行，因此必须优先考虑完整性评估或更换。本文介绍了上游管道系统，受内部腐蚀。提出了一种案例研究，其中需要一种自动进入其原始设计寿命的系统，以便从数据库中携带流体预测另外50年的效率。流体包括甜或酸性气体，原油和注射水。可用设计数据，但检验信息稀疏，伊利检测的线路不到10％;提供优惠券数据和生产预测。根据有限的可用数据，挑战是根据每个管道的剩余寿命优先考虑换行级别。测量了ILI数据可用的线的电流条件。进行了腐蚀风险评估以确定可靠的降解机制。然后根据被运输的流体对管道进行分组。这使得基于有限的检查和优惠券数据，启用所有管道的当前条件的估计。为了预测残余生活，有必要估计未来的腐蚀速率，再次估计所有线条。可以使用许多方法来估算未来的腐蚀速率。这些包括基于历史检查数据的速率或使用腐蚀建模技术。本文描述了一种合成这两种方法以允许假设用于计算残余寿命的腐蚀速率分布的混合方法。此外，还描述了未来腐蚀速率估计的选项以及所讨论的每个人的优缺点。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号