具有不同浮箱端部形状的半潜式钻井平台运动性能对比

The Motion Comparison of Semi-submersible Drilling Unit with Different Pontoon End Shapes

半潜式钻井平台是深海油气资源开发的重要装备,通常有两个浮箱作为提供主要浮力的组件,不同的船型设计会采用不同的浮箱端部形状,可因此会影响平台的总排水量并改变平台的运动性能。该文以某半潜式钻井平台为研究对象,分别对尖形、半圆形、倒角方形三种代表性浮箱端部形状的船型方案进行了运动性能计算,并对计算结果进行了横向对比。结果表明,在主尺度不变的前提下,相对于尖形端部浮箱而言,半圆形、倒角方形端部浮箱有利于提高的整体装载能力,同时平台的运动性能没有显著改变。

Semi-submersible drilling unit is one of the most important equipments for the development of the offshore oil and gas. Being a main part providing buoyancy, the two pon- toons of a semi-submersible drilling unit may have different end shapes which may result in different motion performance and displacement. This paper shows the results of hydrodynamic analysis and motion comparison of a platform design in three schemes with different pontoon end shapes named respectively ＂sharp-angle＂, ＂half-round＂ and ＂rounded-cube＂. The analysis data show that the two latter end shapes enable an increased load capacity for the platform without serious divergence on motion performance.