How To Check for Wear at The Connection Points of Drill Pipes

Drill pipes are a crucial component for rotary drilling rigs to operate underground. The condition of the connection points directly affects the safety and efficiency of construction. If severe wear occurs at the connection points but is not detected in time, it may lead to serious accidents such as drill pipe breakage. Let's discuss how to check for wear at the connection points of drill pipes.

1. Visual Inspection: First, walk around the drill pipe and carefully examine the connection points for any obvious cracks, deformations, or wear marks. Pay special attention to the threaded parts. If you find missing thread profiles or peeling surfaces, it indicates significant wear.

2. Dimensional Measurement: Use tools like calipers to measure the dimensions of key parts at the connection points, such as the outer and inner diameters of the drill pipe joints. If the measured values deviate significantly from the standard values, it indicates obvious wear.

3. Check the Tightness: When the drill pipe is not in operation, manually shake the connection points to feel for any abnormal looseness. If you notice excessive clearance or significant resistance when turning, be cautious.

4. Non-destructive Testing: Utilize professional equipment such as ultrasonic flaw detectors and magnetic particle flaw detectors to detect internal cracks and defects that are difficult to spot with the naked eye, accurately assessing potential wear at the connection points.

5. Inspect the Seals: If the seals at the connection points are aged or damaged, it can lead to lubricant leakage and the entry of impurities like sand. Therefore, check the integrity of the seals for any deformation or hardening.

6. Consider Construction Feedback: If abnormal vibrations or significant torque fluctuations occur during construction, even if no issues are found during visual inspection, focus on checking the connection points of the drill pipes. There may be hidden wear.

Checking for wear at the connection points of drill pipes requires a multi-dimensional and multi-method approach. Through visual inspection, dimensional measurement, and professional testing, potential problems can be detected in a timely manner. Only by conducting regular inspections and nipping wear in the bud can the safe and stable operation of rotary drilling rigs be ensured, avoiding major losses due to minor issues.