Lesson 4 Jack-up Platform

Keywords and Expressions

Legs：桩腿

Spud cans：桩靴

Jacking system：提升系统

Rack and pinion gear：齿条与齿　啮合机构

Hydraulic motor：液压马达

Electric motor：电动马达

Jack-up rigs：自升式钻井平台

4.1　Introduction

A jack-up rig or a self-elevating unit is a type of mobile platform that consists of a buoyant hull fitted with a number of movable legs， capable of raising its hull over the surface of sea. The buoyant hull enables transportation of the unit and all attached machinery to a desired location. Once on location the hull is raised to the required elevation above the sea surface on its legs supported by the sea bed. The legs of such units may be designed to penetrate the sea bed， may be fitted with enlarged sections or footings， or may be attach ......     （共4544字）    [阅读本文]>>