Drilling
Drilling is the use of deep drilling of mechanical engineering technology to exploit underground or submarine natural resources, or take stratigraphic section of the live, capture the entity samples to provide experiments to obtain the relevant data and so on. Drilling method is basically screw drilling method, washing method, impact method (English: Percussion drill), rotation method (English: Rotary drill), take the core method (English: Core drill), do not take the core method (English: Non-core Torgon-Percussion drill, Hand Auger, Flight Auger, Wash Boring and Clay Cutter (English: Clay Cutter) and so on. According to the different terrain, the environment and the actual situation, through observation and evaluation, and so detailed planning, coupled with the judge to limit (including human resources and equipment, etc.), and decide what kind of drilling methods. ...