15000m钻井包顶驱系统的背钳装置研究与设计

Research and design of back-clamp device for 15000m drilling pack top drive system

背钳装置作为顶驱系统的关键部件,其主要作用是通过夹紧钻杆配合主传动系统完成钻杆的上扣和卸扣,从而辅助顶部驱动系统(以下简称“顶驱”)完成钻井任务。本文所述背钳装置是根据钻井的实际工况,在借鉴国内外先进顶驱系统背钳装置的基础上,针对半潜式平台用15000m钻井包顶驱系统对背钳提出的高扭矩、高可靠性和安全性的要求,是专为该系统开发研制出的配套装置。该装置集机械、电气、液压于一体,能够很好的适应15000m的钻井深度,适用于外径尺寸在4.5~10in所有钻杆,结构安全可靠、整体性好、对中精准、通用性强。

As a key component of the top drive system,the back-clamp device has been mainly used to complete the lifting and unloading of the drill rod by clamping the drill rod in cooperation with the main drive system,thereby assisting the top drive system(hereinafter referred to as"top drive")to complete drilling task.The back-clamp device described in the text is according to the actual working conditions of the drilling on the basis of the domestic and foreign advanced top-drive system back-clamp devices.Aiming at the requirements of the high torque,high reliability and safety for the top drive system of 15000m drilling pack for semi-submersible platform,this device has been specially developed.The device integrates mechanical,electrical and hydraulic,which can well adapt to the drilling depth of 15000 meters.It is suitable for all drill pipes with an outer diameter of 4.5-10in.The structure is safe and reliable with good integrity,accurate centering and strong versatility.