Views:0 Author:Site Editor Publish Time: 2018-01-08 Origin:Site
1. The bottom of the hole should be kept clean, when it is found that there are carbide, block, diamond, metal block, off the core and hole wall block. It should be cleared by means of punching, fishing, grasping, sticking, casing, grinding and suction.
2. It is forbidden to alternately use the methods of diamond drilling and steel drilling in the same drilling hole.
3. Drill by changing the diameter, the probe stone, holes and other parts of the wall off hole and drilled hole in the hole, you must slow down the speed.
4. After tapping, use conic bit to change diameter changing step.
5. The formation should be decompressed from hard to soft and control the drilling speed.
6. Drilling process should be someone, regular observation flushing fluid consumption.