Views: 0 Author: Site Editor Publish Time: 2025-06-03 Origin: Site
During the operation of rotary drilling RIGS, encountering hard rock layers is often a difficult problem. Don't worry. The stepped drilling method can deal with it effectively. Next, I'll tell you in detail about its key points.
1. Step-by-step crushing to reduce resistance: The stepped drilling method is like conquering a mountain with steps. First, a shallow hole is drilled, and then it gradually deepens to break down the hard rock layer by layer, greatly reducing the drilling resistance.
2. Select drill bits reasonably: Match different types of drill bits according to the hardness of the rock strata. For instance, a truncated drill bit can be used to dig a shallow pit first, and then a gear drill bit can be used to dig deeper, thereby enhancing the drilling efficiency.
3. Control the drilling speed: Avoid being overly eager for quick success and instant benefits. When encountering hard rock layers, slow down and drill at a constant speed to prevent excessive vibration of the drilling rig and damage to the equipment due to excessive speed.
4. Adjust the drilling pressure and rotational speed: Increase the drilling pressure appropriately, but not too abruptly; At the same time, reduce the rotational speed to allow the drill bit to fully interact with the rock layer and ensure the drilling effect.
5. Timely remove rock debris: A large amount of rock debris will be produced during drilling. It should be discharged in time to prevent the accumulation of rock debris from affecting drilling and also to avoid clogging the drill bit.
6. Pay attention to equipment maintenance: During the step drilling process, the equipment load is relatively large. Before and after construction, a careful inspection should be carried out to ensure that the drilling rig is in good condition.
Conclusion: When encountering hard rock strata, the stepped drilling method is a capable assistant for the construction of rotary drilling RIGS. As long as the above key points are strictly followed and the operation is reasonable, the hard rock layer drilling task can be completed efficiently and safely, allowing the construction to proceed smoothly.
