In the construction process of rotary drilling rigs, broken rods are a relatively common problem. Broken rods are usually caused by excessive bending moments or torques on the drill pipe, defective drill pipe materials, improper operation, etc. Once the rod is broken, it will not only affect the construction progress, but also increase the construction cost. Therefore, this article will introduce the treatment method of rotary drilling rig in the construction process.
First of all, if it is found that the rotary drilling rig is broken during the construction process, the construction should be stopped immediately and the specific situation of the broken rod should be checked. Generally speaking, broken rods can be divided into two situations: one is the fracture of the upper part of the drill pipe, and the other is the fracture of the lower part of the drill pipe. For the upper part of the broken drill pipe, it can be treated by replacing the drill bit and adjusting the mud ratioFor drill pipes that are broken at the bottom, it is necessary to replace the drill pipe or repair the drill pipe.
When dealing with broken rods, the following specific measures can be taken:
1.Replace the drill bit: If the broken rod is caused by wear or damage to the drill bit, it can be replaced with a new drill bit. When replacing the drill bit, attention should be paid to choosing a drill bit that matches the formation and hole diameter, and ensure that the drill bit quality is qualified.
2.Adjust the mud ratio: If the broken rod is caused by an improper mud ratio, the mud ratio can be adjusted. In general, the mud ratio should be adjusted according to the formation and hole diameter to ensure that the drill pipe is not corroded and worn by the mud during construction.
3.Replacement of drill pipe: If the broken rod is caused by a defective drill pipe material or a problem with the superstructure, a new drill pipe can be replaced. When replacing the drill pipe, attention should be paid to choosing a drill pipe with reliable quality and ensuring that the drill pipe matches the rotary drilling rig.
4.Repair drill pipe: If the broken rod is caused by a problem with the substructure, it can be dealt with by repairing the drill pipe. In general, repairing drill pipe requires returning the drill pipe to the factory for repair or replacement parts to ensure the quality and reliability of the drill pipe.
In short, Huilong Machinery reminds that the broken rod of the rotary drilling rig is a relatively common problem in the construction process, but it can be prevented and dealt with through regular inspection and maintenance, control of construction parameters, selection of appropriate drill bits and drill pipes, adjustment of mud ratio and flow rate, operation specifications and other methods. In the actual construction process, corresponding measures and methods should be taken according to the specific situation to ensure the normal operation and service life of the rotary drilling rig.