High precision vertical drilling

Vertical directional drilling has been widely used in coal mine production in recent years. once the hole position of special directional drilling is determined, it must be hit to the designated position, otherwise it can not meet the design requirements. how to drill high-precision vertical hole through conventional drilling equipment, so as to effectively reduce the project investment and meet the engineering technical requirements, we have two directional water supply drilling in sangshuping coal mine of Hancheng mining company. in the drilling process, we have achieved good results by taking effective anti-deviation measures, which can provide reference for similar engineering construction.