深水流速剖面对隔水管横向载荷的影响

Influences of Deepwater Current Velocity Profile on Transverse Load on Marine Riser

文章通过分析浅海海域流速梯度的计算方法,结合艾克曼海流理论,提出了新的深海流速剖面的计算方法,并且通过理论计算和数值模拟比较了新老两种计算方法对深水钻井隔水管受到的海流横向总载荷以及对底部挠性接头横向反力的影响。为海洋深水钻井隔水管的海流载荷计算以及后续的水下井口稳定性分析提供了新的理论参考。

The article puts forward a new method to calculate deepwater current velocity profile by analyzing the calculation of current velocity gradient in shallow waters and combining with V.W.Ekman's sea current theory,and compares the influences of the old and the new calculation methods on the total transverse load on the deepwater marine riser as well as on the transverse counterforce on the bottom flexible joint by the theoretical calculation and the numerical simulation,which provide a theoretical basis for calculating sea current load on deepwater drilling riser and analyzing the subsea wellhead stability.