我队在鑽进某两个斜孔时,设计孔深分别为300、280公尺,开孔倾角77°和76°,要求随孔深进逐步分段走斜,而到终孔倾角为59°和60°。但鑽进100公尺后,倾角一直未变。到170公尺时,经采用鑽铤、减短粗径鑽具、换小径鑽具等方法进行纠正,效果不大,仅走斜2°。这样,便要求以后每鑽进10公尺走斜1°。为此,我们采取偏顶进行导斜补救,基本上按设 When drilling one of two inclined holes, our team designed hole depths of 300 and 280 meters respectively. The opening pitches were 77 ° and 76 °. ° and 60 °. However, after drilling 100 meters, the inclination has not changed. To 170 meters, through the use of drill collars, reduce the diameter drill, drill for small diameter and other methods to correct, little effect, only go inclined 2 °. In this way, it is required that every 10 meters of drilling should be inclined by 1 ° in the future. To this end, we take the lead top relief bias recovery, basically set