Keywords: Core drilling stuck, drill pipe selection, deep hole exploration, drilling accident prevention
In deep hole exploration, drill pipe sticking accidents are often caused by a mismatch between the drill pipe and the geological formation. High-strength, thick-walled drill pipes should be used in hard rock formations, while flexible drill pipes are recommended in fractured zones to reduce torque transmission. For example, in a gold mine exploration project, the drill pipe sticking rate decreased by 60% after switching to S135 grade drill pipes at a depth of 800 meters.
But will flexible drill pipes affect core sample quality?
Follow us. In the next issue, we will discuss the crucial role of torque release systems in deep hole exploration…