Post-Operation Maintenance & Management of Drill Pipe

Provided by China Welong | renee@welongpost.com

Proper Classification & Storage

After drilling operations are complete, all drill pipes should be:

• Sorted and stored on pipe racks according to:
  • Size
  • Wall thickness
  • ID (bore size)
  • Steel grade
  • Classification level
• Positioned neatly to prevent deformation or accidental damage

Thorough Cleaning & Inspection

Before storage, each drill pipe must undergo the following:

1. Clean thoroughly using fresh water:
   • Pipe interior and exterior
   • Threaded connections
   • Shoulder sealing surfaces
2. Dry immediately after rinsing to prevent corrosion
3. Perform a full inspection, checking for:
   • Surface cracks or gouges
   • Thread integrity
   • Uneven wear on joints
   • Damaged or dented shoulders
   • Bending or bite marks on pipe body
   • Corrosion or pitting on inner/outer surfaces

Advanced NDT recommended:
Where conditions permit, apply:

• Ultrasonic testing (UT) on the pipe body
• Magnetic particle inspection (MPI) on threads
  This significantly lowers the risk of:
• Joint thread fractures
• Leakage due to pipe body failure

Anti-Corrosion Protection

For undamaged drill pipes:

• Apply rust preventive compound to the threads and shoulder faces
• Install thread protectors (thread protectors recommended)
• Ensure all protection measures are in place before storage

Handling Defective Drill Pipe

• Clearly mark problematic drill pipes using paint or other visual indicators
• Store separately to avoid accidental reuse
• Schedule repair or replacement promptly to avoid disruption in future operations

Long-Term Storage Guidelines

For drill pipe stored outdoors for extended periods:

• Cover with waterproof tarpaulins
• Conduct routine inspections to check for:
  • Internal and external corrosion
  • Moisture-related damage
• Take necessary steps for moisture and corrosion protection

Conclusion:
Effective post-operation drill pipe management not only reduces the likelihood of future failures but also helps control operational costs and ensures reliable performance in the field.

For technical consultation or product support, contact:
renee@welongpost.com