用于套管侧钻的导斜器,以往采用φ120～130毫米圆钢加工制成,加工周期长,而且侧钻后就留在井下,浪费钢材。在加工条件较差时,还往往影响现场施工。为了改变这种状况,新疆石油管理局井下作业处从1970年开始试制铸铁导斜器,同年9月开始正式使用,五年多来共在16口井进行套管侧钻(钻深100～200米左右),都获得成功,基本能满足套管侧钻的需要。 Sleeve used for lateral drilling guide, the past using φ120 ~ 130 mm round bar made of processing, long processing cycle, and after the sidetrack left in the well, a waste of steel. In the poor processing conditions, but also often affect the site construction. In order to change this situation, Xinjiang Petroleum Administration underground operations pilot trial cast iron tilt-changer since 1970, officially put into use in September the same year, more than five years in a total of 16 wells side casing (drilling depth 100 ~ 200 Meters or so), have been successful, the basic can meet the needs of casing sidetracking.