How to use the drill pipe
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Choose the appropriate drill pipe type based on torque, pull force and the minimum radius of curvature allowed by the drill bit.
2. During the construction process, avoid connecting large-diameter drill pipes with small-diameter drill pipes (that is, mixing large and small drill pipes) to prevent small drill pipes from breaking or deforming due to insufficient strength.
3. When clamping the drill pipe with a vise, do not clamp the female buckle of the female connector to prevent the female buckle from being deformed.
4. Pay attention to the installation of the drill pipe. The pre-tightening force of the upper buckle should be controlled within 15MPa, so as to avoid the difficulty of the hook and ring due to excessive pressure. Avoid baking the joint with fire, which will reduce the mechanical properties of the joint, (especially the female joint) will affect the service life. If you don't pre-tighten the threaded connection so that it oscillates, the top of the molar is aligned with the tip by grinding the threads together, and the sides will develop alveolar ridges, which will lead to thread damage phenomena. Failure to preload and not press in the box step will result in fatigue fracture at the root of the male connector thread. Under the action of high-pressure liquid flow, the female joint is pierced, resulting in corrosion phenomenon, which can easily lead to longitudinal cracks in the female joint.
5. Before assembling the drill pipe, clean the male and female buttons and apply screw oil (the screw oil cannot be replaced with other waste oil or inferior pressed oil) to prevent the male and female buttons from being worn or damaged prematurely.
6. Before installing and connecting the drill pipe, please pay attention to cleaning the channel hole to prevent debris from blocking the channel and causing pressure in the mud system.
7. Be careful not to press the button forcibly. When fastened, the pin must not hit the shoulders and threads of the box and should ensure that the male and female connectors are aligned. Make sure the shackle of the drill is coaxial with the spindle of the power head.
8. Pay attention to check the wear of each part of the drill pipe, and find the cause of abnormal wear in time:
1) Determine if the sharp hard material in the hole has scratched the drill pipe.
2) Determine whether the drill pipe is scratched by the drill guide device.
3) When the mark on the main body of the drill pipe is about 1mm deep and rotates spirally for more than one turn, please use it with caution. Prevent the drill pipe from breaking during the construction process, resulting in greater losses.
9. Please note that the drill collar buckle type is damaged (buckle, improper buckle, severe wear, etc.), and replace it in time to avoid damage to the drill pipe thread.
10. Pay attention to the hoisting and handling of the drill pipe, so as not to damage the ordinary buckle.
11. Please be careful to avoid mixing drill rods with different button types, even if the drill rods are not produced by the same manufacturer (because drill rods produced by different manufacturers have different technical parameters and processing methods) , props, mechanical equipment, processing tolerances, close distances, etc. must be different); the old and new drill pipes are too different, and the drill pipes with too different degrees of wear should not be mixed to avoid construction hazards.
12. If the drill pipe buckle is found to be damaged in a small local area (about 1-2 buckles, the length is 10mm), it should be repaired in time before use.
13. Please be careful not to clamp any part of the main body of the drill pipe with a vise, so as to avoid the main body of the drill pipe being slipped and hurting and shortening the service life of the drill pipe.
14. Use qualified zinc-based rib fat. Butter is not suitable for use as thread oil. Insufficient thread grease can cause high damage to the joints on the shoulder of the platform, easily "loosening" the threaded connection and leading to thread damage. Do not use grease or use unqualified grease, which will make the surface of the wire stick and stick.
