深水钻井平台-隔水管耦合系统漂移预警界限

发布时间：2018-04-28 13:40

本文选题：深水钻井 + 钻井平台　；参考：《石油勘探与开发》2016年04期

【摘要】：建立了深水钻井平台-隔水管耦合系统漂移动力学模型,提出了深水钻井平台-隔水管耦合系统漂移预警界限分析方法,并进行了实例分析。分别建立了深水钻井隔水管-井口-导管耦合系统分析模型及平台漂移动力学分析模型,开发了深水钻井平台漂移动力学求解器。结合实例开展了深水钻井平台-隔水管耦合动力学特性及耦合作用规律分析,阐述了漂移预警界限分析方法。结果表明:平台漂移初始阶段隔水管载荷对平台漂移起促进作用,随着平台漂移位移的增大隔水管逐渐开始抑制平台漂移;平台漂移运动过程中隔水管系统顶部参数响应较快,底部参数响应具有明显的迟滞效应;随着海流流速的增大或水深的减小,深水钻井平台-隔水管耦合系统漂移预警界限减小,应尽早准备和启动隔水管系统底部脱离。
[Abstract]:The drift dynamics model of the coupled system of deepwater drilling platform and riser is established, and the method of early warning and limit analysis of the drift of the coupled system of deepwater drilling platform and riser is put forward, and an example is given. The analytical model and the platform drift dynamics analysis model of the coupled system of riser wellhead and conduit in deep water drilling are established respectively and the drift dynamics solver of deep water drilling platform is developed. The coupling dynamic characteristics and coupling law of deepwater drilling platform-riser are analyzed with examples, and the method of drift warning limit analysis is expounded. The results show that the riser load promotes the platform drift at the initial stage of the platform drift, and with the increase of the platform drift displacement, the riser begins to restrain the platform drift, and the top parameter response of the riser system is faster during the platform drift movement. The bottom parameter response has obvious hysteresis effect, and with the increase of current velocity or the decrease of water depth, the drift warning limit of deepwater drilling platform-riser coupling system decreases, so the bottom breakaway of the riser system should be prepared and started as soon as possible.
【作者单位】：中国石油大学(华东)海洋油气装备与安全技术研究中心;
【基金】：国家重点基础研究发展计划(973)“深水海底井口-隔水管-平台动力学耦合机理与安全控制”(2015CB251203) 教育部长江学者和创新团队发展计划“海洋油气井钻完井理论与工程”(IRT14R58) 山东省自然科学基金联合专项(ZR2014EL018) 中国博士后科学基金(2015M570621)
【分类号】：TE951

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