What Kind of Drill Pipe Should Be Chosen for Rotary Drilling Rig Construction

In the operation of rotary drilling rigs, drill pipes, as key components, their selection directly affects the construction efficiency and quality. The types and specifications of drill pipes suitable for different geological conditions and construction requirements vary. The following explains from six aspects how to scientifically select the drill pipe of a rotary drilling rig.

1. Select the type based on geological conditions: In soft soil layers, friction-type drill pipes can be chosen, which utilize the friction between the pipe body and the soil to transfer torque. In hard rock strata, machine-locked drill pipes are required. Through the mechanical locking structure, large torque is transmitted to achieve efficient drilling.

2. Consider the drilling depth to select the length: When the drilling depth is relatively shallow, short drill pipes are flexible to operate and convenient for lifting and lowering the drill. For deep hole operations, drill pipes of sufficient length should be selected to ensure that the designed depth can be reached. At the same time, attention should be paid to whether the strength of the drill pipes can withstand their own weight and drilling load.

3. Match the torque and power of the drilling rig: Based on the rated torque and output power of the rotary drilling rig, select the appropriate drill pipe. If the torque-bearing capacity of the drill pipe is insufficient, it is prone to breakage. If it is too large, it will cause waste of equipment resources and increase costs.

4. Pay attention to the material and strength of the drill pipe: High-quality drill pipes are mostly made of high-strength alloy steel and undergo special heat treatment to enhance wear resistance and toughness. When making a choice, it is necessary to check the material certificate and strength parameters to ensure that it can handle complex working conditions.

5. In line with the requirements of construction efficiency: For projects that require continuous operation and tight schedules, priority should be given to drill pipes that can be added and removed quickly and have smooth slag discharge to reduce auxiliary time. For projects with high precision requirements, drill pipes with good guiding properties should be selected to ensure the quality of hole formation.

6. Pay attention to the connection method of the drill pipe: Common connection methods include bolt connection and hydraulic quick connection. Bolt connections have high stability but are time-consuming for disassembly and assembly. The hydraulic quick connection is convenient and efficient, suitable for construction scenarios where rods are frequently added and removed, and can be selected as needed.

Conclusion: The selection of drill pipes for rotary drilling RIGS requires a comprehensive consideration of multiple factors such as geology, depth, equipment, material, efficiency, and connection methods. Only by precisely matching all the conditions can the performance of the drill pipe be fully exerted, the construction efficiency be improved, the smooth completion of the project be guaranteed, and at the same time, the equipment wear and construction costs be reduced.