What Should Be Done If The Drill Bit Breaks in The Hole During The Operation of A Rotary Drilling Rig

When operating with a rotary drilling rig, the most feared situation is encountering unexpected circumstances. A drill bit breaking in the hole is definitely a headache-inducing problem. Don't panic! There is a scientific solution to this situation. Let me explain it to you in detail below.

1.Immediately stop the operation: If the drill bit is found to be broken, stop the drilling rig immediately to prevent the drill bit from further sinking or shifting. At the same time, carefully observe the situation inside the hole to provide a basis for subsequent handling.

2. Determine the position of the drill bit: Use professional measuring ropes, underground cameras and other tools to precisely locate the depth and posture of the broken drill bit in the hole. Only by identifying the position of the "enemy" can an effective strategy be formulated.

3. Try the salvage tools: Select the appropriate salvage tools based on the fracture condition of the drill bit. For example, the male and female cones are used to cover the fracture area, and the drill bit is removed through the lifting equipment. Or use a chuck to hold the outer wall of the drill bit and slowly pull it out.

4. Cutting and disassembly processing: If the drill bit is stuck too tightly and difficult to retrieve, you can consider using a cutting device to divide the drill bit into small pieces and remove them in batches. But be careful when cutting to avoid damaging the hole wall.

5. Repair the hole wall and equipment: After removing the drill bit, check if the hole wall has collapsed or shrunk in diameter, and promptly protect the wall with mud or backfill it. At the same time, inspect and repair the drilling rig to ensure that the equipment returns to normal and does not affect the subsequent construction.

6. Preventive measures: Before construction, carefully inspect the wear and connection of the drill bit. During operation, control the drilling speed to avoid overloading. Regularly maintain the equipment to reduce the risk of drill bit breakage.

When the drill bit of a rotary drilling rig breaks in a hole, as long as you remain calm and follow the steps, you can turn the situation around. Prevention is always better than cure during construction. Conducting thorough equipment inspections and operating in a standardized manner are the keys, which can not only reduce unexpected situations but also ensure the smooth progress of the project.