据管道&天然气杂志网3月22日报道，能源技术公司贝克休斯（Baker Hughes）开创了一项解决方案，以克服高CO2含量油田（如巴西盐前海上开发项目）中软管应力腐蚀开裂（SCC）的趋势，实现了一个重大的技术里程碑。
检验、验证和保证机构劳埃德船级社（Lloyd's Register）向贝克休斯公司（Baker Hughes）颁发了一份设计鉴定文件（DAD）认证，验证了该公司的软管测试计划和结果。在此之前，贝克休斯进行了为期三年的广泛测试，包括120多个测试装置、测试方法和测试特征，包括从现场作业中回收的管道的切割，这标志着为高二氧化碳海上油田提供可行的柔性管道解决方案迈出了一步。该认证证明，除了标准的25-30年设备使用寿命外，贝克休斯还可以将软管的使用寿命延长至少50%，潜在使用寿命延长2.5倍。
2017年，巴西国家石油管理局(Brazil National Petroleum Agency)首次发现，在高压、高二氧化碳含量油田使用的软管道会导致柔性管道安装处的抗拉钢丝断裂，从而造成潜在的环境影响和生产损失，并发布了失效模式警报。DAD为柔性管道的发展提供了一条道路，以满足油气行业的安全和监管要求。
贝克休斯软管道系统副总裁Domenico Di Giambattista表示，作为一个能源行业，我们必须不断分享经验教训，以确保安全、可靠和无害环境的运作。贝克休斯运用其技术专长，开创了解决这一难题的解决方案。虽然SCC-二氧化碳现象不是我们在软管道中所经历的情况，但它威胁到了某些需要软管道开发的近海油田的可行性。这个认证是重要的一步，因为我们投资在恶劣的海上环境中充分部署软管道系统。
DAD证实，先进的材料和最先进的制造工艺相结合，生产出了一种软管，能够承受最恶劣的操作条件，同时仍然保持着优势，包括油田布局的灵活性、简化的FPSO配置和缩短首次出油时间。今后，所有贝克休斯在巴西安装的软管道都将由DAD覆盖，并在更换之前延长作业寿命。此外，DAD还能帮助贝克休斯评估和预测作业数年的软管道的完整性。
贝克休斯致力于未来的软管测试，以进一步推进其独特的技术。
郝芬 译自 管道&天然气杂志网
原文如下：
Baker Hughes Flexible Pipe Technology Should Overcome Challenges of Pre-Salt Subsea Developments
Baker Hughes, an energy technology company, reached a significant technology milestone in pioneering a solution to overcome flexible pipe stress corrosion cracking (SCC) tendencies in high CO2 content fields, such as those found in Brazil’s pre-salt offshore developments.
The inspection, verification and assurance body, Lloyd’s Register, issued Baker Hughes a design appraisal document (DAD) certification, validating the company’s flexible pipe testing program and results. This follows an extensive three-year testing campaign by Baker Hughes — featuring more than 120 test setups, methodologies and characterizations, including dissection of pipes recovered from field operations — and marks a step towards a viable flexible pipe solution for the most demanding high CO2 offshore fields. The certification verifies that on top of the standard 25-30-year equipment service life, Baker Hughes can extend flexible pipes contracted service life by at least 50%, with the potential of 2.5x life extension.
In 2017, the Brazil National Petroleum Agency issued a failure mode alert when it first identified flexible pipes used in high-pressure, high-CO2 content fields caused broken tensile armor wires on a flexible pipe installation with potential environmental impacts and production losses. The DAD offers a path forward for the growth of flexible pipes to meet the safety and regulatory requirements in the oil and gas industry.
“As an energy industry, we must constantly share lessons learned to ensure safe, reliable and environmentally sound operations. Baker Hughes applied its technology expertise to pioneer a solution to solve this challenge,” said Domenico Di Giambattista, vice president for flexible pipe systems at Baker Hughes. “While the SCC-CO2 phenomenon was not something we experienced with our flexible pipes, it threatened the viability of certain offshore fields that require flexible pipe for development. This certification is an important step as we invest for growth to fully deploy flexible pipe systems in tough offshore environments.”
The DAD confirms that the combination of advanced materials and state-of-the-art manufacturing processes produces a flexible pipe that can withstand the most severe operating conditions while still retaining advantages including flexibility in field layout, simplified FPSO balcony configuration, and reduced time to first oil. Moving forward, all installed flexible pipes by Baker Hughes in Brazil will be covered by the DAD and offer operators extended operating life before replacement. In addition, the DAD enables Baker Hughes to assess and predict the integrity of flexible pipes operating for several years.
Baker Hughes is committed to future flexible pipe testing to further advance its unique technology.
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