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。
The drift-off dynamic model of deepwater drilling platform and riser coupUng system was established. An analysis method on drift-off warning limits of deepwater drilling platform and riser coupling system was proposed, and a deepwater drilling platform/riser system was taken for case study. The analysis model of deepwater riser, wellhead and conductor coupling system and the drift-off dynamic model of platform were established respectively. The drift-off dynamic solver of deepwater platform was developed. The coupling dynamic characteristics and coupling effect of the deepwater drilling platform and riser system were analyzed in combination with example, and the analysis method for drift-off warning limits was described. The results show that： the riser load acting on platform plays a driving role in the platform drift-off in the initial drift-off stage, and begins to inhibit the platform drift-off gradually as the drift-off displacement increases; During the platform drift-off, the transient response speed of upper riser parameters is high, while the transient response of lower riser parameters presents an obvious hysteresis effect; As the current speed increases or water depth decreases, the drift-off warning limits of deepwater drilling platform/riser coupling system decrease and the deepwater drilling riser should be disconnected earlier.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
2016年第4期641-646,668,共7页
Petroleum Exploration and Development
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)
关键词
深水钻井
钻井平台
隔水管
漂移动力学模型
漂移预警界限
deepwater drilling
drilling platform
riser
drift-off dynamic model
drift-off warning limits
