深水钻井隔水管防台悬挂装置的选型设计

针对目前深水钻井防台时隔水管处理方式存在的作业窗口小、作业模式选择困难、易发生事故等问题,本文提出了将隔水管硬悬挂与软悬挂方案相结合的新方法,既能快速操作,又能缓冲隔水管运动。为了降低新方法中隔水管的加速度,提出并分析了3种控制方案对加速度的补偿效果,结果表明加速度峰值控制方案具有制造安装简单、实施方便等优势。在此基础上针对加速度峰值控制方案中封闭高压系统散热难的问题,提出了采用差动液压缸实现半开式循环散热的方法。本文提出的隔水管加速度峰值控制悬挂方法及其配套的差动散热-主动控制节流装置,具有较好的动载荷补偿能力,可为我国深水钻井防台提供技术支持。

Selection and design of typhoon prevention riser suspension device for deepwater drilling

In order to solve the problems existed in the riser handling method,such as small operation window,difficult operation mode selection and accidents are prone to occur,etc.in the deepwater drilling during typhoon prevention period,this paper puts forward a new solution that combines the riser hard suspension with the riser flexible suspension,which has the advantages of quick operation and riser movement buffering.In order to reduce the acceleration of risers in the new solution,three control schemes are proposed and the compensation effect on the acceleration is analyzed.The results show that the peak acceleration control scheme has the advantages of simple fabrication,installation and convenient implementation,etc..Besides,regarding the problem that heat of the closed high pressure system in the peak acceleration control scheme is difficult to be dissipated,the solution that adopts the differential hydraulic cylinder to achieve the semi-open circulation heat dissipation is proposed.The riser peak acceleration control suspension scheme and the supporting differential heat dissipation-active control throttling device proposed in this paper have shown good dynamic load compensation capability,and can provide technical support for typhoon prevention in the process of deepwater drilling.