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深水M型刚性跨接管陆地预制精度控制
Precision control in land prefabrication of deep-water M-shaped rigid jumpers
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- DOI:
- 作者:
- 王鑫，曹洪涛，田从永，刘荣坤，冷亚林，杨建昌
- 作者单位:
- 1.海洋石油工程股份有限公司，山东青岛 266000 2.海洋石油工程股份有限公司，天津 300000
- 关键词:
- 刚性跨接管；预制；精度控制；误差累积；空间角度
rigid jumper; prefabrication; precision control; error accumulation; spatial angle
- 摘要:
- 深水M型刚性跨接管的空间尺寸及角度精度是决定水下油气生产系统安装与投产成败的关键技术指
标。受来料误差、工艺波动、环境干扰等因素影响，其预制过程中易产生多源误差累积，导致最终建造精度超
差，进而显著增大水下对接失败风险。针对上述问题，创新提出“精度控制重心前移”理念，构建以来料检
验、过程管控、误差补偿为核心的跨接管预制全流程精度控制方法体系。通过弯管段精准验货、方位角差值控制、互补角度拼凑等关键技术的应用，某深水油气开发项目跨接管预制精度一次合格率从80%提升至95%、
总装效率提升25%，大幅减少了总装阶段精度调整工作量，为水下安全、顺利对接奠定了坚实基础。研究表明，该精度控制体系可有效解决复杂空间结构跨接管的精度管控难题，为深海油气装备的高精度建造提供技术
支撑与工程参考。
The spatial dimensions and angular precision of deep-water M-shaped rigid jumpers are key technical indicators determining the success or failure of the installation and commissioning of subsea oil and gas production systems. Due to factors such as incoming material errors, process fluctuations, and environmental interferences, multi-source error accumulation easily occurs during the prefabrication process, leading to out-of-tolerance final manufacturing precision and significantly increasing the risk of subsea connection failure. To address the above issues, this paper innovatively proposed the concept of “shifting the focus of precision control forward” and constructed a full-process precision control method system centered on incoming material inspection, process control, and error compensation. Through the application of key technologies such as accurate inspection of elbow sections, azimuth difference control, and complementary angle assembly, as well as their verification in an actual deep-water oil and gas development project, the one-time qualification rate of jumper prefabrication precision was improved from 80% to 95%, and the final assembly efficiency was increased by 25%. This significantly reduced the precision adjustment workload in the final assembly stage and laid a solid foundation for a safe and smooth subsea connection. The results show that this precision control system can effectively solve the precision control difficulties of jumpers with complex spatial structures and provides technical support and reference for the high-precision fabrication of deep-sea oil and gas development equipment.