Status and Development of Directional Drilling Technology in Coal Mine

By reviewing the development status of the Chinese directional drilling technology in coal mine in recent years, the authors described the performance characteristics and R & D direction of directional drilling equipment at home and abroad, and analyzed the key equipment of directional drilling and drilling technology. And then we summarized the application of directional drilling technology in coal seam geological conditions of our country, such as geological exploration, coal seam gas controlling and water prevention engineering. Finally the authors proposed the development direction and application prospect of directional drilling in the future.