Discussion on Deviation Correction Technology of Long Borehole in Gas Drainage

Abstract To solve the drilling layer (especially small inclination to wear long borehole) deviation cause gas control drilling control range is not up to standard, large quantities and the problem of poor drainage effect in Xinji coal mine based on the analysis of borehole construction result in deviation in a variety of reasons, targeted in technology, management, system, equipment, and adopted a series of effective measures on the scene to “rectify”, puts borehole deflection can be controlled within the scope of reduced the drilling quantity, raise the drilling control ability, increase the gas control working time, realized the “technical economic integration”.