Nghiên cứu mối quan hệ giữa tải trọng và tốc độ quay dụng cụ khoan trong quá trình khoan
Abstract: Two main parameters in rotary drilling regim control the efficiency of drilling process are the weight on bit and the rotated speed. Theoreticaly these two parameters are independent each others but in practice optimization of the drilling regim. They have a closely interrelation ship. The study of interrelation ship of these two parameters gives us the scientific basic for the orientation in optimizing adjusment of drilling regim.