Analysis of The Causes of Abnormal Noises During Rotary Drilling

Have you ever encountered a rotary drilling rig suddenly making a shrill and abnormal noise before starting the drill? Don't panic! These abnormal sounds are like "distress signals" sent out by machines. Today, let's talk about the six major causes of common abnormal noises to help you quickly locate the problem and reduce downtime losses.

1. Abnormal drill bit: If you hear a "click-click" sound, it might be that the drill bit is worn or the tooth seat is loose. Long-term high-intensity operation can cause the alloy teeth of the drill bit to crack easily, and loose components may also fall into the hole, affecting the drilling efficiency.

2. Power head failure: When a high-frequency "buzzing" noise occurs, it is necessary to check whether the power head bearing is damaged. Insufficient lubrication or the entry of metal debris will accelerate the wear of the bearings. In severe cases, it may cause the power head to get stuck.

3. Hydraulic system issues: If there is a "hissing" sound, it might be due to leakage in the hydraulic pipeline or the oil pump being empty. Aging seals and insufficient oil can both cause such faults, which not only affect pressure output but also lead to environmental pollution.

4. Loose transmission components: The "clattering clattering" collision sound is most likely due to loose chains, belts or couplings. Displacement of connecting components caused by vibration, if not dealt with in time, may lead to component detachment and even cause safety accidents.

5. Abnormal engine noise: A knocking sound similar to "dang dang", which may indicate engine knocking or abnormal valve clearance. Poor fuel quality and inaccurate ignition timing can cause the engine to "throw a tantrum".

6. Drill pipe interference: When a "friction" sound is heard during drilling, it is necessary to check whether the drill pipe is scraping against the casing and the hole wall. The formation change leads to uneven force on the drill pipe, which is prone to causing the drill pipe to bend and deform.

The next time you hear a rotary drilling rig "complain", check against these six points to quickly identify the problem. Remember, timely detection of abnormal noises and accurate diagnosis of faults can not only extend the service life of equipment but also ensure the safety and efficiency of construction. When encountering complex problems, don't hesitate. Seek professional personnel for further inspection and repair!