The turbo drill is a downhole power tool used for oil and gas drilling. The drilling fluid drives the turbine to rotate, which in turn drives the drill bit to break the rock. It is mainly used for complex drilling operations such as directional drilling and horizontal drilling.
1. Structural composition
Turbine section: The core component, composed of multiple turbine stators and rotors, drives the rotor to rotate when the drilling fluid flows through.
Main shaft: Connects the turbine section and the drill bit to transmit torque and axial force.
Bearing section: Supports the main shaft and bears axial and radial loads.
Drill bit: Directly contacts the formation and is responsible for breaking the rock.
2. Working principle
When the drilling fluid passes through the turbine section, it drives the rotor to rotate, driving the main shaft and drill bit to rotate, thereby breaking the rock. The drilling fluid also plays a role in cooling and cleaning the drill bit.
3. Performance characteristics
High speed: The turbodrill has a high speed and is suitable for drilling in hard formations.
Directional control: It can be used in conjunction with directional drilling tools to achieve precise wellbore trajectory control.
High temperature resistance: can work stably in high temperature underground environment.
Long life: wear-resistant materials are used, and the service life is long.
4. Application areas
Directional drilling: used for operations that require precise control of the wellbore trajectory.
Horizontal drilling: suitable for horizontal wells and large displacement wells.
Deep wells and ultra-deep wells: excellent performance in deep wells and ultra-deep wells.
Complex formations: suitable for hard formations and complex geological conditions.
5. Advantages and disadvantages
Advantages:
High speed, high drilling efficiency.
Strong directional control ability.
Simple structure and easy maintenance.
Disadvantages:
High requirements for drilling fluid.
Low efficiency in soft formations.
Summary
Worm gear drill bits are widely used in directional drilling, horizontal drilling and complex formation operations due to their advantages such as high speed, precise control and high temperature resistance. They are important tools in oil and gas drilling.