Severity assessment of small wrinkles in pipelines subject to load cycles

受负载循环影响的管道中小皱纹的严重性评估

• 批准号: 493087-2015
• 负责人: Das, Sreekanta
• 金额: $ 2.34万
• 依托单位: University of Windsor
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=696578
• 关键词: Severity; assessment; small; wrinkles; pipelines

Steel pipelines buried beneath the earth are the primary structure the pipeline industry uses to transport oil, gas, and petroleum products. Canada has the second-largest pipeline network in the world. The Canadian pipeline industry employs thousands and adds about $8.8 billion to Canada's GDP. Hence, the structural safety and uninterrupted operation of oil and gas pipelines are paramount. Buried oil and gas pipelines endure aggressive and corrosive environments and complex loading. As a result, these pipelines develop various defects while in service. One such defect is the formation of wrinkles in the pipeline. The presence of wrinkle defects is not uncommon in a buried pipeline. It is believed that a small wrinkle defect may not pose any threat to a pipeline's operation or a pipeline's structural safety. However, no research data is available to support this belief. Therefore, the pipeline industry unwillingly removes or repairs wrinkle defects to avoid any possible risk of pipeline failure where the wrinkle defect is located. Repairing or removing a portion of a pipeline is costly. Further, it may lead to an undesirable shutdown of the pipeline operation. These result in the pipeline industry losing revenue, and interrupts the supply of oil and gas to various industries, businesses, and home owners. To prevent these outcomes, this research program will develop much-needed defect assessment guidelines that the pipeline industry is desperately looking for. Hence, the outcome of this project will provide the pipeline industry with a tool to assess risk of failure in buried pipelines with small wrinkle defects. This helps to reduce the amount of revenue the pipeline industry loses from theses defects and minimizes interruptions to the supply of oil and gas.

埋在地球下方的钢管管道是管道行业用于运输石油，天然气和石油产品的主要结构。加拿大拥有世界第二大管道网络。加拿大管道行业拥有数千美元，并增加了加拿大GDP的88亿加元。因此，石油和天然气管道的结构安全和不间断的操作至关重要。埋藏的油和天然气管道耐用侵略性和腐蚀性环境以及复杂的负载。结果，这些管道在服务中会产生各种缺陷。这样的缺陷之一是管道中皱纹的形成。在埋藏的管道中，皱纹缺陷的存在并不少见。据信，微小的皱纹缺陷可能不会对管道的操作或管道的结构安全构成任何威胁。但是，没有研究数据可以支持这种信念。因此，管道行业不情愿地消除或维修皱纹缺陷，以避免在皱纹缺陷所在的地方发生管道故障的任何风险。维修或删除管道的一部分是昂贵的。此外，这可能导致管道操作的不良关闭。这些导致管道行业失去收入，并打断向各个行业，企业和房主的石油和天然气供应。为了防止这些结果，该研究计划将制定急需的管道行业正在寻找的缺陷评估指南。因此，该项目的结果将为管道行业提供一种工具，以评估具有较小皱纹缺陷的埋入管道失败的风险。这有助于减少管道行业因这些缺陷而损失的收入，并最大程度地减少对石油和天然气供应的中断。