M7 Mud-Lubricated Mud Motor Bearing Assembly
M7 Mud-Lubricated Mud Motor Bearing Assembly
M7 Bearing Assembly
Tried-and-True Performance
By lengthening bit-to-bend, our engineers have packed even more into our industry-leading mud lubricated motor design to give drillers more power—and more confidence—to deliver high torque and high ROP.
Simply reliable. Built to perform.
WZL mud lube bearing assemblies are designed to be pushed hard. They withstand high weight, torque and downhole temperatures to help you cut through hard formations in aggressive environments.
The efficient and compact design of our mud lube bearing assemblies allows for easier service and consistent, predictable performance. These assemblies are supported with radial flow restrictor bearings above and below the bearing stack, ensuring optimal lubrication.
Flexibility
Our M7 motor is designed to drill any conventional hole size, and the screw-on stabilizer feature enables the use of a wide variety of stabilizers with multiple gauge outside diameters. We also offer custom screw-on stabilizer designs to meet the needs of your unique application.
The M7 can also be equipped with our fixed bend or 0-3º adjustable bend for directional drilling, or straight housing for rotary steerable applications.
Specifications (Imperial)
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| Operating capacity | Static capacity | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nominal motor OD (in) | Nominal BA OD (in) | Bit box to bend (in) | Bit box to fixed bend (in) | Hole size (in) | WOB (lb) | Max bit overpull (lb) | Torque (ft-lb) | Flow rate (gpm) | WOB to re-run (lb) | Bit overpull to re-run (lb) | Body overpull (lb) | Torque (ft-lb) |
| 4 ¾ | 5 | 57 | 46 | 5 ⅞ – 7 ⅞ | 48,000 | 48,000 | 5,500 | 375 | 213,000 | 72,000 | 404,000 | 8,500 |
| 5 | 5 ⅛ | 57 | 46 | 5 ⅞ – 7 ⅞ | 48,000 | 48,000 | 5,500 | 375 | 213,000 | 72,000 | 424,000 | 8,500 |
| 6 ½ | 6 ½ | 64 | 52 | 7 ⅞ – 9 ⅞ | 72,000 | 72,000 | 15,000 | 600 | 358,000 | 101,000 | 524,000 | 24,000 |
| 6 ¾ | 7 | 64 | 52 | 8 ½ – 9 ⅞ | 87,000 | 87,000 | 15,000 | 600 | 360,000 | 137,000 | 568,000 | 24,000 |
| 7 | 7 | 64 | 52 | 8 ½ – 9 ⅞ | 87,000 | 87,000 | 15,000 | 600 | 360,000 | 137,000 | 659,000 | 24,000 |
| 7 ¾ | 7 ¾ | 78 | 65 | 9 ⅝ – 12 ¼ | 112,000 | 112,000 | 22,000 | 950 | 546,000 | 216,000 | 563,000 | 35,000 |
| 8 | 8 | 78 | 65 | 9 ⅝ – 12 ¼ | 112,000 | 112,000 | 22,000 | 950 | 546,000 | 216,000 | 783,000 | 35,000 |
| 9 ⅝ | 9 ⅝ | 96 | 91 | 12 ¼ – 17 ½ | 132,000 | 132,000 | 30,000 | 1,350 | 772,000 | 223,000 | 1,177,000 | 48,000 |
Specifications are based on as-new condition and are subject to change without notice. Motor assemblies are available in a multitude of speeds and configurations.
Specifications (Metric)
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| Operating capacity | Static capacity | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nominal motor OD (mm) | Nominal BA OD (mm) | Bit box to bend (m) | Bit box to fixed bend (m) | Hole size (mm) | WOB (daN) | Max bit overpull (daN) | Torque (N·m) | Flow rate (lpm) | WOB to re-run (daN) | Bit overpull to re-run (daN) | Body overpull (daN) | Torque (N·m) |
| 121 | 127 | 1.45 | 1.17 | 149 – 200 | 21,400 | 21,400 | 7,500 | 1,400 | 94,700 | 32,000 | 180,000 | 11,500 |
| 127 | 130 | 1.45 | 1.17 | 149 – 200 | 21,400 | 21,400 | 7,500 | 1,400 | 94,700 | 32,000 | 189,000 | 11,500 |
| 165 | 165 | 1.63 | 1.32 | 200 – 251 | 32,000 | 32,000 | 20,300 | 2,300 | 159,200 | 44,900 | 233,000 | 32,500 |
| 171 | 178 | 1.63 | 1.32 | 216 – 251 | 38,700 | 38,700 | 20,300 | 2,300 | 160,100 | 60,900 | 253,000 | 32,500 |
| 178 | 178 | 1.63 | 1.32 | 216 – 251 | 38,700 | 38,700 | 20,300 | 2,300 | 160,100 | 60,900 | 293,000 | 32,500 |
| 197 | 197 | 1.98 | 1.65 | 244 – 311 | 49,800 | 49,800 | 29,800 | 3,600 | 242,900 | 96,100 | 250,000 | 47,500 |
| 203 | 203 | 1.98 | 1.65 | 244 – 311 | 49,800 | 49,800 | 29,800 | 3,600 | 242,900 | 96,100 | 348,000 | 47,500 |
| 244 | 244 | 2.44 | 2.31 | 311 – 445 | 58,700 | 58,700 | 40,700 | 5,100 | 343,400 | 99,200 | 524,000 | 65,100 |
Specifications are based on as-new condition and are subject to change without notice. Motor assemblies are available in a multitude of speeds and configurations.
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