Drill a brief description of the use of technology

Different well structure, the size of rock bit, type and use are special requirements. As general requirements whipstock cone drill teeth or warranty with trimming path structure, the use requiring high speed, low WOB and so on. Tags: three-wing concave concave geological core drill bit
Different well structure, the PCD grinding wheel  size of rock bit, type and use are special requirements. As general requirements whipstock cone drill teeth or warranty with trimming path structure, the use requiring high speed, low WOB and so on.
WOB and RPM to determine, not only determines the efficiency of the rock crusher cone bits, but also affect the cone drill teeth, bearing wear. Asai, soft formations, rock bit to shearing based, generally using high speed, low WOB. Medium hard formations, rock bit shearing, impact, crush comprehensive role, generally use medium speed and concrete drill bits  medium and high WOB.
Crustal rocks in different positions, which greatly changes the mechanical properties of the rock. Deeply buried rocks, in the multi-directional compression stress state, the rock porosity decreases, the intensity increases. Cementation upper hole section generally loose, soft, high speed roller bits, drill down. Lower section generally rock hard, abrasive large, low speed cone drill, drill pressure is high, use a long time. Lithology and different soft and hard rock crushing mechanism is different, resulting cone bit different forms of failure. Our various oil drilling in  masonry drill bits the common lithology, its mechanical properties are measured petrophysical.
Controlled drilling drill Type: PCB drilling with a drill with straight shank twist drill, twist drill set and fixed shank shank Spade (undercut) drill bit. Straight shank twist drill mostly for single head machines, PCB drilling relatively simple or single panels.