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Yiguang Technology/Special-shaped Multi-edge Groove Drill Pipe Operation Precautions
Release time:
2019-07-15
Author:
Source:
Yikuang Technology/Special-shaped Multi-edge Groove Drill Pipe/Manufacturer/
Yiguang Technology/Special-shaped Multi-edge Groove Drill Pipe Operation Precautions
1. Before the drill pipe is connected, the male and female screw threads should be coated with thread grease to ensure the strength of the screw threads when the drill pipe is connected.
2. The diameter of the standard matching drill bit of this series of drill pipes is Φ85mmThe maximum diameter of the matching drill bit is φ Φ94mm. If the diameter of the drill bit exceeds φ Φ94mm, the effect of rotating the drill pipe to wipe the hole wall will be greatly reduced during the drilling process, which is easy to cause the phenomena of holding the drill and hole collapse.
3. When the drilling pressure is normal, the drill pipe can be pushed forward normally. When the drilling pressure is too high, the rotating speed of the drilling rig should be appropriately reduced to keep the low speed. If the drilling pressure continues to be too high, the drilling of the hole should be abandoned decisively and the opening position should be selected again.
4. This series of drill pipes are mainly for ventilation and slag discharge, and can also be suitable for feng shui linkage. regular drilling is mainly for ventilation. When holding drill and hole collapse occur, water injection and slag discharge can be carried out as appropriate.
Key words:
Special-shaped multi-edge grooved drill pipe, three-edge, geology, spiral, new coal
