深水钻井动力定位平台应急解脱范围分析

发布时间：2018-04-17 09:05

本文选题：深水钻井动力定位平台 + 应急解脱范围　；参考：《中国海上油气》2017年03期

【摘要】：深水钻井动力定位平台在推进器由于失电或自然环境恶劣且超过其能力的情况下,会失去对位置的控制而产生漂移,对正常钻井作业产生重大的影响。基于深水钻井平台隔水管系统挠性接头和伸缩节冲程、隔水管连接器解锁角度、平台应急解脱程序和作业经验,建立了深水钻井动力定位平台应急解脱允许漂移范围的系统计算流程,针对目标平台(1 500 m作业水深的DP3钻井平台)使用ABAQUS软件对LMRP及下BOP组进行建模,并进行了不同工况下的动态分析,结果表明:目标平台在过提711 kN情况下LMRP倾斜6°可完成解锁;在应急解脱前,可用的解脱时间随着蒲福氏等级的增大与水深的减小而降低,海流流速与蒲福等级对平台漂移产生的影响规律相似,海流流速对平台漂移产生的影响较小。
[Abstract]:In deep water drilling dynamic positioning platform, when the propeller is out of power or its natural environment is bad and exceeds its ability, it will lose its position control and cause drift, which will have a great influence on the normal drilling operation.Based on the flexible joints and expansion joint stroke of the riser system of deepwater drilling platform, the angle of release of the riser connector, the platform emergency relief program and operation experience,The system calculation flow of the allowable excursion range for the dynamic positioning platform in deep water drilling is established. The ABAQUS software is used to model the LMRP and the lower BOP group for the DP3 drilling platform with a water depth of 1 500m for the target platform.The dynamic analysis under different working conditions shows that the LMRP tilting 6 掳can be used to unlock the target platform under 711kN overlift, and the available release time decreases with the increase of Beaufort's grade and the decrease of water depth before emergency relief.The effect of current velocity on platform drift is similar to that of Beaufort grade, and the current velocity has little effect on platform drift.
【作者单位】：中海油田服务股份有限公司钻井事业部;
【基金】：国家重点基础研究发展计划(973计划)“海洋深水油气安全高效钻完井基础研究(编号:2015CB251200)”部分研究成果
【分类号】：TE951

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