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Borehole downhole motor is a kind of downhole dynamic drilling tool upon the power of drilling mud. Mud stream from the outlet of mud pump flows though a by-pass valve into the motor. This stream produces pressure loss at both inlet and outlet of the pump to push the rotor into rotating, and to transmit the torque and speed onto the bit. Borehole PDM drill is the main tool to drill.
Principle: Downhole motor is a kind of downhole dynamic drilling tool upon the power of drilling mud. Mud stream from the outlet of mud pump flows through a by-pass valve into the motor. This stream produces pressure loss at both inlet and outlet of the pump to push the rotor into rotating, and to transmit the torque and speed onto the bit. The downhole motor property mainly depends upon its property parameters.
Constitution: Downhole motor is composed of five assemblies: by-pass valve, motor, anti-drop, cardan shaft and drive shaft.
The down-hole motor is a positive-displacement down-hole motor. It converts the high pressure fluid power of the mud into the mechanical energy of drill bit rotation. The motor is widely used in the drilling, making inclination, adjusting azimuth, coring, reaming, side tracking and work over for the directional wells, horizontal wells side tracked wells and straight wells of oilfields and coal mines. In addition, it is suitable for compound drilling and traversing and other special works.
Table for borehole Downhole Motors' specifications and models:
Code of motor | Unit | 5LZ185×7.0 | 7LZ185.5×7.0 | 5LZ197×7.0 | 5LZ197.5×7.0 | 5LZ203×7.0 |
Recommend Hole Size | mm | 215-244 | 215-244 | 244-311 | 244-311 | 244-311 |
Recommend Hole Size | in | 81/8-95/8 | 81/8-95/8 | 91/8-123/6 | 95/8-121/8 | 95/8-121/4 |
Input flow Rate | L/S | 20-35 | 20-35 | 20-40 | 20-40 | 20-40 |
Motor Pressure Loss | MPa | 4 | 4 | 3.2 | 4 | 3.2 |
Speed of the Bit | r/min | 184 | 173 | 61-122 | 85-160 | 70-155 |
Working Torque | N.m | 5436 | 5939 | 8067 | 7223 | 7002 |
Delay Dynamic Torque | N.m | 8154 | 8908 | 14118 | 12640 | 12289 |
Output Power | KW | 80-140 | 80-140 | 57.6-115.2 | 72-144 | 57.6-126.7 |
Recommend Drilling Weight | KN | 120 | 120 | 120 | 130 | 150 |
Maxing Drilling Weight | KN | 240 | 240 | 240 | 260 | 240 |
Thread Connection Top |
| 41/2REG | 41/2REG | 51/2REG | 51/2REG | 51/2REG |
63/8REG | 63/8REG | 63/8REG | ||||
Thread Connection Bottom |
| 61/2REG | 61/2REG | 63/8REG | 63/8REG | 63/8REG |
The Drill Length | mm | 8120 | 8090 | 7998 | 8980 | 8100 |
Code of motor | Unit | 5LZ203.5×7.0 | 5LZ216×7.0 | 5LZ216.5×7.0 | 5LZ244×7.0 | 7LZ244.5×7.0 |
Recommend Hole Size | mm | 244-311 | 273-323 | 273-323 | 311-445 | 311-445 |
Recommend Hole Size | in | 95/8-121/4 | 103/4-123/4 | 103/4-123/4 | 121/2-171/2 | 121/2-171/2 |
Input flow Rate | L/S | 20-40 | 22-48 | 22-48 | 50-75 | 50-75 |
Motor Pressure Loss | MPa | 4 | 3.2 | 4 | 3.2 | 4 |
Speed of the Bit | r/min | 70-155 | 61-138 | 61-138 | 91-136 | 91-136 |
Working Torque | N.m | 8778 | 8895 | 11117 | 15124 | 18905 |
Delay Dynamic Torque | N.m | 15362 | 15567 | 19455 | 26468 | 33085 |
Output Power | KW | 72-158.4 | 63.36-138.29 | 79.2-172.8 | 144-216 | 180-270 |
Recommend Drilling Weight | KN | 170 | 190 | 238 | 200 | 250 |
Maxing Drilling Weight | KN | 260 | 300 | 378 | 360 | 450 |
Thread Connection Top |
| 51/2REG | 63/8REG | 63/8REG | 63/8REG | 63/8REG |
63/8REG | ||||||
Thread Connection Bottom |
| 63/8REG | 63/8REG | 63/8REG | 73/8REG | 73/8REG |
The Drill Length | mm | 8990 | 8100 | 8950 | 9480 | 10280 |
Product Categories : Drilling Motors > Motors For Drilling
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.