What are the special functions of drill pipe in underground drilling?
Dec 22, 2025| 1. Transmitting torque and rotational force: The drill pipe transmits rotational force and torque to the drill bit via the drilling rig's power, driving the drill bit to rotate and cut the formation, thus achieving drilling operations.
2. Supporting the drill bit and drill string: The drill pipe connects the drill bit and drill string, supporting their stable operation during downhole work and ensuring smooth drilling operations.
3. Delivering drilling fluid: Drilling fluid can be delivered to the bottom of the well through the inner cavity of the drill pipe string, cooling the drill bit, reducing formation temperature, cleaning the wellbore, and removing cuttings. The inner diameter of the drill pipe and the type of threaded connection will affect the drilling fluid delivery efficiency.
4. Monitoring wellbore conditions: During downhole operations, sensors and tools attached to the drill pipe can be used to monitor the geological conditions of the well, the diameter of the well, the lithology of the formation, and the mineral content. 5. Assisted Casing Installation: During drilling, drill pipe can be used with the assistance of certain devices to run casing into the wellbore, ensuring wellbore stability and preventing accidents such as borehole collapse.
In summary, drill pipe is a crucial device in underground drilling. It not only transmits power and torque, supports the drill bit and drill string, but also delivers drilling fluid, monitors wellbore conditions, and assists with casing installation, among other special functions. It plays a vital role in underground drilling operations and is an essential component of underground drilling.
