How To Maintain Second-hand Drill Pipes? 5 Tips To Avoid Deformation And Wear

Second-hand drill pipes, as the core power transmission components of rotary drilling RIGS, have certain wear and tear due to their early use. Daily maintenance should focus on preventing deformation and wear. This not only reduces construction failures but also extends the service life of the drill pipes. The following are specific maintenance tips to help standardize maintenance operations.

1. Proper storage: Place the second-hand drill pipes horizontally on dedicated brackets to avoid single-end suspension or stacking and squeezing. The storage environment should be dry and well-ventilated, away from standing water and corrosive substances to prevent the drill pipe from rusting.

2. Post-construction cleaning: After each construction, promptly use a high-pressure water gun to rinse off the soil and sand on the outer wall of the drill pipe. For the rock debris remaining on the inner wall of the drill pipe, it can be cleared by blowing with compressed air or using a special pipe cutter to prevent the residual impurities from accelerating wear.

3. Maintenance of connection parts: Regularly inspect the threads and sealing rings of the drill pipe joints. If the threads are worn or the sealing rings are aged, replace the parts in time. Before each connection, apply special grease to the threaded parts to reduce friction loss during connection.

4. Avoid overloading: Match the construction conditions with the rated load-bearing capacity of the second-hand drill pipe. Over-depth and over-hardness drilling are strictly prohibited. When encountering excessive resistance from rock strata, adjust the drilling parameters in a timely manner to prevent forced operation from causing the drill pipe to bend and deform.

5. Regularly inspect deformation: Use a level or straightness detection tool to check the straightness of the drill pipe every month. If the drill pipe is found to be slightly bent, it should be straightened and repaired in time. When it is severely deformed, its use should be stopped to prevent the risk of breakage.

6. Enhanced rust prevention treatment: Conduct comprehensive rust prevention maintenance on second-hand drill pipes every quarter. First, sand off the surface rust with sandpaper, and then evenly spray anti-rust paint. For drill pipes that have been idle for a long time, they can be wrapped with waterproof plastic film to further isolate moisture.

In conclusion, the maintenance of second-hand drill pipes should focus on six major dimensions: storage, cleaning, connection, load, inspection, and rust prevention. Through meticulous daily maintenance, problems such as deformation and wear can be effectively avoided, ensuring that the rotary drilling rig maintains a stable and efficient operating state during construction and reducing equipment maintenance costs.