VI. Installation and application methods1.When drill string runs to the predetermined depth and needs pulling out, jam the lift sub and dismantle the kelly bar.2. Put the scraper overflow gutter up on...谢谢 还有一点 请帮忙 好吗 1.为延长刮泥器的使用寿命，建议最好不过钻具组合中的螺旋扶正器。2.冬天使用时，最好用蒸汽刺几分钟，直到认为其橡胶软硬度很容易套到钻杆时为好。3.本刮泥器在下钻过程中可以反过来在钻盘上使用，以防止向井中落物。1.To prolong the scraper's service life, it is suggested not to overflow the cyclone centralizer in the make-up of string.2.When operated in winter, it is better to preheated by steam until the rubber is good to be put on the drill stem.3.This scraper can be used conversely on diamond disc when tripping to prevent objects falling into the well.翻完收工！(中午有事了，没翻完，让你久等了，不好意思哈！)