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The LZ54 downhole drilling motor is a downhole power tool used in oil and natural gas drilling operations, belonging to the category of Positive Displacement Motors (PDM). Below is a detailed introduction to the LZ54 downhole drilling motor
Structural Components:
Bypass Valve: Connected to the top of the tool, used for circulating drilling fluid or closing the passage.
Motor Assembly: The core component, consisting of a rotor and stator. The stator is a spiral cavity lined with rubber, while the rotor is a metal helical shaft. Together, they form sealed chambers.
Universal Joint: Converts the eccentric motion of the rotor into concentric motion.
Drive Shaft: Transmits torque to the drill bit and withstands axial and radial loads.
Working Principle: High-pressure drilling fluid enters the motor, driving the rotor to rotate within the stator, converting hydraulic energy into mechanical energy to power the drill bit for rock fragmentation.
Efficient Drilling: Suitable for complex well trajectories such as directional and horizontal wells.
High-Temperature Resistance: The stator rubber formulation can withstand high-temperature well conditions.
Enhanced Stability: The drive shaft design minimizes vibration, extending service life.
Compatibility: Can be used with PDC bits, roller cone bits, and other drill bits.
Directional Drilling: Works with bent housings or steering tools for trajectory control.
Deep/Ultra-Deep Wells: Provides stable power, reducing drill string wear.
Workover Operations: Used for sidetracking or deepening old wells.
Drilling Fluid Requirements: Must be clean and free of solid particles to prevent motor clogging or wear.
Startup Procedure: Gradually start the pump to avoid impact; apply drilling pressure only after stabilizing the flow.
Troubleshooting: A sudden pressure spike may indicate motor seizure or bit damage.
After use, flush internal drilling fluid and inspect the stator rubber for detachment.
Regularly replace lubricating grease in the universal joint and bearing assembly.
Avoid direct sunlight during storage to prevent rubber degradation.
Model | 5LZ54×7.0Ⅲ | 5LZ54×7.0Ⅵ | |
Bit Size | in | 2 3/8–3 1/2 | 2 3/8–3 1/2 |
OD | mm | 56 | 56 |
ABH | ° | - | - |
Lobe | 5:6 | 5:6 | |
Stages | 3.0 | 6.0 | |
Pressure | MPa | 2.40 | 4.80 |
Flow Rate | L/s | 1.3-2.2-3.2 | 1.3-2.2-3.2 |
Flow Per Revolution | L/r | 0.34 | 0.34 |
Bit Speed | rpm | 230-390-565 | 230-390-565 |
Torque | N·m | 160 | 320 |
Max.torque | N·m | 240 | 480 |
Output Power | kw | 2.2-5.4 | 4.4-10.8 |
Weight on Bit | KN | 4 | 4 |
Max. Weight on Bit | KN | 8 | 8 |
Connection | Top Female Thread REG | 1 1/2 | 1 1/2 |
Bottom Female Thread REG | 1 1/2 | 1 1/2 | |
Length | mm | 2827 | 3587 |
Weight | kg | 50 | 56 |
0531-69959201
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No 12111,Jingshi Road, Lixia District, Jinan City, Shandong Province. P.R. China
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