HOW TO PREVENT BURNING THE DRILL BIT DURING DIAMOND DRILLING

2020-12-20 17:32:52

HOW TO PREVENT BURNING THE DRILL BIT DURING DIAMOND DRILLING？
1.Ensure Smooth Circulation of Drilling Fluid: Diamond drilling typically operates at high speeds. Due to the small gap between the drill bit and the borehole wall, insufficient supply or interruption of the drilling fluid at the bottom can lead to poor cooling of the bit and delayed removal of cuttings, which can quickly result in burning the bit. Therefore, it is essential to maintain continuous circulation throughout the drilling process.
2.Control an Appropriate Drilling Speed: During diamond drilling, it is crucial to avoid blindly increasing the weight on the bit in pursuit of faster penetration rates. If the drilling speed is too high, it can cause a buildup of rock cuttings in the borehole, leading to delayed removal of cuttings and potential burning of the bit, or even causing the hole to become crooked. To prevent this vicious cycle, attention should be paid to the organic coordination of the three parameters in diamond drilling technology. When drilling through hard rock formations, the focus should be on increasing the weight on the bit while also increasing the pump rate accordingly as the drilling speed increases. However, one should avoid simply applying more weight to achieve higher drilling speeds. Generally, in medium-hard homogeneous rock layers, the drilling speed should be appropriately controlled and matched with an adequate pump rate.