The Practice of Sticking Accident Treatment for Directional Drilling in Jiulishan Coal Mine

Directional drilling technology was widely applied for the long-distance gas drainage and drilling capacity in coal mine,sticking accident was the major risk for directional drilling technology in coal mine.It took directional drilling sticking accident in Jiulishan coal mine for example,according to the stratum factor of sticking position,borehole trajectory,and drilling construction situation,it analyzed and obtained the generation mechanism of common sticking accident,formulated the basic process of sticking accident treatment.Finally,the actual processing situation verified the rationality of the sticking accident treatment process.