1. According to the torque, push and pull force of the drilling rig, and the minimum allowable angle, select the drill pipe suitable for the model and specification.
2. Prevent large-diameter drill pipes from connecting with small-diameter drill pipes at the construction site, (ie, mixed application of size drill pipes) to prevent small drill pipes from being broken or deformed due to insufficient compressive strength.
3. Note that when clamping the drill rod with a vise, it is not necessary to clamp a part of the female buckle of the female connector to avoid the deformation of the female buckle.
4. Pay attention to when installing the drill pipe, the pre-tightening force of the make-up should be controlled within 15MPa, so as to avoid the difficulty of lifting the sling due to excessive working pressure. Prevent the joint from burning, reduce the physical properties of the joint, (especially the female joint) endanger the service life. The non-torque threaded connection shakes, causing the threads to grind against each other and the crests to become sharp, resulting in ridges on the sides, resulting in damage to the threads and a sticky state. If there is no torque, the female buckle step is not clamped tightly, which can cause fatigue and fracture at the thread root of the male joint.
5. For crude oil drill pipe, pay attention to clean the male and female buttons before attaching the drill pipe, and apply silk oil (the silk oil can not be replaced with other waste oil or fake pressure oil) to avoid the male and female buttons being too early. worn or damaged.
6. Pay attention to clear the waterway holes before installing the drill pipe, so as to avoid the dirt blocking the safety channel and causing the software of the mortar system to hold back pressure.
7. Be careful not to force the deduction. When mating, the male should not impact the shoulders and threads of the box, and ensure that the male and female connectors are centered. Ensure the parallelism of the rig sling and rotary table spindle bearings.
8. Pay attention to check the wear condition of each position of the drill pipe. If abnormal wear occurs, the cause should be found immediately.
9. Pay attention to the damage of the drill collar wiring buckle (wrong buckle, random buckle is more serious wear, etc.), it should be replaced immediately to prevent damage to the drill pipe thread.
10. Pay attention to hoisting, and prevent collision and damage to the male buckle when transporting the drill pipe.
11. Pay attention to prevent the mutual use of drill pipes with different buckle types, even if they are not produced by the same manufacturer, they do not need to be used interchangeably (due to the performance parameters, production and processing methods, commonly used game props, industrial equipment of drill pipes produced by various manufacturers) The dimensional tolerances and close distances of the drill pipes for production and processing must be different); there is too much difference between the old and the new, and the drill pipes with too much difference in wear levels do not need to be used interchangeably to prevent construction risks.
12. It is found that the drill pipe buckle type has some small areas of damage (about 1-2 buckles, the buckle length is 11mm), and it should be repaired immediately before use.
13. Be careful not to use a vise to support all positions of the drill pipe body, so as to prevent the rod body from being squeezed by slips and reduce the service life of the drill pipe.
