What to pay attention to during the process of connecting drill rods

In the process of connecting drill pipes, in order to ensure the safety and effectiveness of the connection, it is necessary to pay attention to the following points:
Choose the appropriate drill pipe:
Select the appropriate specification and model of drill pipe based on parameters such as torque, pulling force, and allowable minimum curvature radius of the drilling rig.
Avoid mixing drill pipes with different buckle types, different manufacturers, or significantly different old and new ones to avoid connection problems caused by mismatches in tolerances, tightness, and other factors.

Preparation before connection:
Clean the male and female buckles and apply thread oil (avoid using waste oil or inferior pressure oil) to prevent premature wear or damage to the male and female buckles.
Clean the water channel holes to prevent debris from blocking the channel and causing pressure buildup in the mud system.
Connection operation:
When aligning, the male buckle should not impact the shoulder and thread of the female buckle, and ensure that the male and female joints are aligned.
The pre tightening force of the buckle should be controlled within 15 MPa to avoid difficulties in unloading due to excessive pressure.
Be careful not to clamp onto the female buckle part of the female connector to prevent deformation.

Inspection and maintenance:
Regularly inspect the wear and tear of various parts of the drill pipe, and promptly identify and handle any abnormal wear and tear.
Discovering localized and small-scale damage to the drill pipe buckle (approximately 1-2 buckles, with a buckle length of 10mm), it should be repaired promptly before use.
Lifting and handling:
When lifting and handling drill pipes, avoid hitting and damaging the male buckle.
Safe operation:
During the connection process, ensure personnel safety and avoid accidents.
Follow the operating procedures and do not forcefully fasten or engage in illegal operations.
By following the above precautions, the safety and effectiveness of drill pipe connections can be ensured, reducing safety accidents and equipment damage caused by connection issues.