Drilling motor
Drilling motor (or downhole motor , mud motor) is a kind of downhole dynamic drilling tool upon the power of drilling mud (or compressed gases) ,which is a kind of positive displacement motor (PDM).
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Drilling motor
Drilling motor (or downhole motor , mud motor) is a kind of downhole dynamic drilling tool upon the power of drilling mud (or compressed gases) ,which is a kind of positive displacement motor (PDM). Drilling motor is widely used in construction operations in the oil fields, geology, coal, salt water wells and other industries. Dynamic medium produces pressure loss at both inlet and outlet of the downhole motor, to push the rotor of downhole motor into rotating, and to transmit the torque and speed onto the bit by cardan shaft and transmission shaft.
Drilling motor tools can be used in conjunction with cone bits, diamond bits and other special bits for drilling vertical well, directional well and horizontal well.
Basic parameters and performance data.
| Drilling motor type | OD, mm | Bit OD, mm | Connecting thread | Head count | Level count | Flow rate | Rotary speed | Motorpressure difference, MPa | Motor torque, N.m | The most pressure difference, MPa | The most torque, N.m | Weight on bit, kN | The most weight on bit, kN | Power, KW | Lenght, mm | |
| Upper end | Lower end | |||||||||||||||
| 5LZ38x7.0-4-360 | 39 | 43～60 | 1AMMT | 1AMMT | 5:06 | 4 | 0.5～1.0 | 152～304 | 3.2 | 81 | 4.8 | 122 | 2 | 3 | 2.6 | 2186 |
| 5LZ45x7.0-4-360 | 46 | 48～76 | 1AMMT | 1AMMT | 5:06 | 4 | 0.8～1.5 | 163～306 | 3.2 | 121 | 4.8 | 182 | 3 | 5 | 3.9 | 2279 |
| 5LZ54x7.0-4-420 | 54 | 60～89 | 11/2REG | 11/2REG | 5:06 | 4 | 1.5～3.0 | 170～340 | 3.2 | 218 | 4.8 | 328 | 4 | 7 | 7.8 | 2604 |
| 5LZ57x7.0-3-600 | 57 | 65～89 | 11/2REG | 11/2REG | 5:06 | 3 | 2.5～5.0 | 180～360 | 2.4 | 256 | 3.2 | 342 | 4 | 7 | 9.7 | 2783 |
| 5LZ60x7.0-4-420 | 60 | 73～102 | 11/2REG | 11/2REG | 5:06 | 4 | 2.0～4.0 | 179～359 | 3.2 | 276 | 4.8 | 414 | 5 | 8 | 10.4 | 2627 |
| 5LZ65x7.0-4-480 | 65 | 79～102 | 11/2REG | 11/2REG | 5:06 | 4 | 3.0～6.0 | 190～380 | 3.2 | 388 | 4.8 | 582 | 8 | 16 | 10.4 | 3130 |
| 5LZ73x7.0-3-600 | 73 | 89～121 | 23/8REG | 23/8REG | 5:06 | 3 | 3.0～6.0 | 126～253 | 2.4 | 440 | 3.6 | 660 | 12 | 20 | 11.7 | 3330 |
| 7LZ73x7.0-4-480 | 73 | 89～121 | 23/8REG | 23/8REG | 7:08 | 4 | 4.0～7.0 | 185～324 | 3.2 | 534 | 4.8 | 801 | 12 | 20 | 18.1 | 3430 |
| 7LZ73x7.0-5-600 | 73 | 89～121 | 23/8REG | 23/8REG | 7:08 | 5 | 4.0～7.0 | 152～266 | 4 | 813 | 6 | 1220 | 12 | 20 | 18.1 | 4530 |
| 5LZ79x7.0-5-600 | 79 | 95～121 | 23/8REG | 23/8REG | 5:06 | 5 | 4.0～7.0 | 140～246 | 4 | 850 | 6 | 1320 | 12 | 20 | 21 | 4800 |
| 7LZ89x7.0-3-600 | 89 | 107～121 | 27/8REG | 27/8REG | 7:08 | 3 | 6.0～9.0 | 157～235 | 2.4 | 709 | 3.6 | 1064 | 22 | 35 | 23.3 | 3755 |
| 7LZ89x7.0-4-640 | 89 | 107～121 | 27/8REG | 27/8REG | 7:08 | 4 | 6.0～9.0 | 124～187 | 3.2 | 1190 | 4.8 | 1785 | 22 | 35 | 23.3 | 4515 |
| 7LZ89x7.0-5-640 | 89 | 107～121 | 27/8REG | 27/8REG | 7:08 | 5 | 6.0～9.0 | 124～187 | 4 | 1487 | 6 | 2231 | 22 | 35 | 29.2 | 5155 |
| 7LZ95x7.0-5-600 | 95 | 118～149 | 27/8REG | 27/8REG | 7:08 | 5 | 6.0～12 | 114～228 | 4 | 1625 | 6 | 2438 | 30 | 55 | 38.9 | |
| 7LZ102x7.0-4-520 | 102 | 118～152 | 27/8REG | 27/8REG | 7:08 | 4 | 6.0～12 | 128～256 | 3.2 | 1159 | 4.8 | 1738 | 30 | 55 | 31 | |
| Drilling motor type | OD, mm | Bit OD, mm | Connecting thread | Head count | Level count | Flow rate | Rotary speed | Motorpressure difference, MPa | Motor torque, N.m | The most pressure difference, MPa | The most torque, N.m | Weight on bit, kN | The most weight on bit, kN | Power, KW | Lenght, mm | ||||
| Upper end | Lower | ||||||||||||||||||
| end | |||||||||||||||||||
| 7LZ102x7.0-4-720 | 102 | 118～152 | 27/8REG | 27/8REG | 7:08 | 4 | 7.0～15 | 108～231 | 3.2 | 1604 | 4.8 | 2406 | 30 | 55 | 38.9 | 5110 | |||
| 5LZ120x7.0-4-720 | 120 | 149～200 | 31/2REG | 31/2REG | 5:06 | 4 | 9.0～18 | 118～236 | 3.2 | 1890 | 4.8 | 2835 | 50 | 90 | 46.6 | 5381 | |||
| 5LZ124x7.0-5-720 | 124 | 149～200 | 31/2REG | 31/2REG | 5:06 | 5 | 9.0～18 | 118～236 | 4 | 2362 | 6 | 3543 | 50 | 90 | 58.3 | 6101 | |||
| 7LZ124x7.0-4-820 | 124 | 149～200 | 31/2REG | 31/2REG | 7:08 | 4 | 11～22 | 107～214 | 3.2 | 2543 | 4.8 | 3815 | 50 | 90 | 57 | 5761 | |||
| 7LZ124x7.0-5-820 | 124 | 149～200 | 31/2REG | 31/2REG | 7:08 | 5 | 11～22 | 107～214 | 4 | 3179 | 6 | 4769 | 50 | 90 | 71.3 | 6581 | |||
| 7LZ146x7.0-5-800 | 146 | 171～222 | 4/2REG | 4/2REG | 7:08 | 5 | 13～26 | 94～188 | 4 | 4249 | 6 | 6373 | 70 | 130 | 84.2 | 6983 | |||
| 7LZ172x7.0-5-960 | 175 | 213～251 | 4/2REG | 4/2REG | 7:08 | 5 | 20～32 | 80～127 | 4 | 7809 | 6 | 11713 | 100 | 170 | 103 | 8268 | |||
| 7LZ178x7.0-6-840 | 178 | 213～251 | 4/2REG | 4/2REG | 7:08 | 6 | 20～32 | 90～145 | 4.8 | 8199 | 6.78 | 11582 | 100 | 170 | 103.7 | 8468 | |||
| 5LZ203x7.0-5-840 | 203 | 251～311 | 65/8REG | 65/8REG | 5:06 | 5 | 22～40 | 85～156 | 4 | 7948 | 6 | 11922 | 155 | 250 | 129.6 | ||||
| 7LZ203x7.0-5-840 | 203 | 251～311 | 65/8REG | 65/8REG | 7:08 | 5 | 22～40 | 76～137 | 4 | 9004 | 6 | 13506 | 155 | 250 | 129.6 | ||||
| 7LZ203x7.0-5-1000 | 203 | 251～311 | 65/8REG | 65/8REG | 7:08 | 5 | 22～40 | 63～115 | 4 | 10719 | 6 | 16079 | 155 | 250 | 129.6 | ||||
| 7LZ216x7.0-5-1020 | 216 | 251～311 | 65/8REG | 65/8REG | 7:08 | 5 | 22～40 | 54～97 | 4 | 12659 | 6 | 18988 | 180 | 300 | 129.6 | ||||
| 7LZ244x7.0-5-1020 | 244 | 311～445 | 65/8REG | 75/8REG | 7:08 | 5 | 30～55 | 54～100 | 4 | 17042 | 6 | 25563 | 220 | 330 | 178.2 | ||||
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