埕北油田隔水导管入泥深度计算及稳定性分析

Calculation of mud depth and stability analysis of conductor in Chengbei Oilfield

隔水导管管体轴向受到井口压载和海底土提供的承载力,横向上受到风浪流等环境载荷,因此需要入泥一定深度和尺寸规格以提供安全的轴向承载力并满足管体的稳定性。本文结合埕北油田海底土质特征,计算得到了隔水导管入泥深度,并优化建立隔水导管有限元模型对隔水导管稳定性进行了校核分析,为海上现场施工提供了有力技术支持。

The conductor is subjected to the wellhead ballast and the bearing capacity provided by the seabed soil in the axial direction,and environmental loads such as wind,wave and current in the transverse direction.Therefore,a certain depth and size are required to provide safe axial bearing capacity and meet the stability of the conductor.Combined with the seabed soil characteristics of Chengbei oilfield,the mud depth of conductorr is calculated in this paper.The finite element model of conductor is optimized and the stability of conductor is checked.It provides strong technical support for offshore site construction.