 |
Depending on the lithology being drilled, the selection of the site type follows the following principles: 1. Select the correct type of tricone bit. In shallow sections where the rock cement is loose, the main concerns are ROP and ball prevention; In the deep section, due to the length of the ... Read More
|
| |
1. The bottom lip of the drill becomes smooth and the lens is slow, indicating a strong carcass. 2. The base of the body becomes inner and outer conical, indicating that the inner and outer diameters of the bit are not strong enough or that it has driven into broken rock. 3. The uneven and partial ... Read More
|
| |
Rolling process is widely used to shape tricone bit in China. The advantages of this process are high production efficiency and full use of raw materials; The internal structure of the borehole is characterized by fiber continuity, fine grain, uniform distribution of carbides, and high red hardness. ... Read More
|
