The drill bit is a crucial component in the operation of a water well drilling rig. Its quality has a direct impact on both the efficiency of the drilling rig and the quality of the borehole. Therefore, proper selection and usage of the drill bit are of utmost importance. During the drilling process, operators must pay close attention to how the drill bit functions to ensure optimal performance. Here are some key aspects to focus on:

1. Timely Replacement of Center Drilling Tools

Once the drill bit of the water well drilling rig penetrates the formation, it is essential to replace the center drilling tool promptly. The first step is to clean the bottom of the hole thoroughly. Compressed air should be used to blow away all the residue at the bottom of the hole. After the drill bit stops rotating, the drill in the water well drilling rig should be lifted slowly. The optimal lifting force is the minimum amount required to lift the drill. This careful lifting process helps prevent damage to the drill bit and ensures a smooth operation.

2. Monitoring the Casing and Hole Conditions

Throughout the drilling process, it is vital to closely monitor the condition of the casing. Timely awareness of the specific situation inside the hole is crucial. Regularly clean the hole to maintain its cleanliness. When operating the drill bit of the water well drilling rig, strong and sudden lifting is strictly prohibited. Sudden and forceful lifting can cause the drill bit to break, damage the casing, or lead to other serious accidents. By maintaining a gentle and controlled operation, the integrity of the drilling process can be preserved.

3. Handling Residual Slag at the Bottom of the Hole

At the bottom of the hole of a water well drilling rig, there is often a significant amount of residual slag. This slag can cause problems, such as getting stuck in the eccentric drill bit and hindering the collection process. In such cases, compressed air should be used to re-clean the hole. Additionally, let the down-the-hole hammer operate for a short period. After that, the lifting work of the center drilling tool can be resumed. This process helps clear the slag and allows the drilling operation to continue smoothly.

In conclusion, by paying close attention to these key points during the drilling process of water well drilling rigs, operators can ensure the efficient and safe operation of the rig, as well as the high - quality completion of the water well.