The Wenzel Downhole Tools Millennium HDD Oil Sealed Drilling Motor is designed to offer reliable performance for both straight and directional drilling within the oil and gas industry, as well as for civil construction applications requiring trenchless horizontal directional drilling (HDD).
Millennium HDD Oil Sealed Motor Assembly
- High allowable WOB (weight on bit) and load capacities.
- Equipped with 2° Fixed Bend Assembly.
- Features the HDD Driveline for shortened overall length.
- Inhouse manufactured components adhere to Wenzel’s high standard of premium materials and quality production.
- Patented design.
Download the Motor Handbook PDF
The Wenzel Motor Handbook is also available as a free download on your mobile device.
Imperial
| Nominal OD (inch) |
Model | Bit Box to Fixed Bend (inch) |
Overall Length (ft) |
Hole Size (inch) |
Max WOB* (lbs) |
Max Bit Overpull* (lbs) |
Absolute Body Overpull** (lbs) |
Flow Range (GPM) |
Speed Range (RPM) | Max Diff. Pressure (psi) |
Torque at Max Diff. Pressure (ft.lbs) |
Max Power (HP) |
Region |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3 1/2 | 7838 | 30 | 16.2 | 4 1/2 – 5 7/8 | 18 500 | 18 500 | 212 000 | 75-150 | 120-235 | 665 | 1 103 | 40 | CA |
| 3 1/2 | 7838 | 30 | 16.2 | 4 1/2 – 5 7/8 | 18 500 | 18 500 | 212 000 | 75-150 | 120-235 | 950 | 1 575 | 60 | US |
| 4 3/4 | 7822 | 50 | 16.7 (17.6)b |
5 7/8 – 7 7/8 | 54 000 (33 000)a |
31 000 | 436 000 | 100-250 | 50-140 | 500 | 2 350 | 55 | CA |
| 4 3/4 | 7838 | 50 | 22.9 | 5 7/8 – 7 7/8 | 33 000 | 31 000 | 436 000 | 150-250 | 80-140 | 860 | 4 450 | 105 | CA&US |
| 4 3/4 | 7850 | 50 | 23.5 | 5 7/8 – 7 7/8 | 33 000 | 31 000 | 436 000 | 100-275 | 65-180 | 1 130 | 4 460 | 145 | US |
| 6 1/2 | 7828 | 56 | 18.7 (19.6)b |
7 7/8 – 9 7/8 | 91 000 (66 000)a |
51 000 | 550 000 | 150-400 | 50-140 | 630 | 5 010 | 120 | CA |
| 6 1/2 | 7840 | 56 | 21.2 | 7 7/8 – 9 7/8 | 66 000 | 51 000 | 550 000 | 300-500 | 105-180 | 900 | 6 200 | 200 | CA&US |
| 7 3/4 | 7830 | 67 | 23.5 | 9 5/8 – 12 1/4 | 88 000 | 73 000 | 638 000 | 400-900 | 65-150 | 680 | 11 200 | 295 | US |
| 8 | 7830 | 67 | 23.5 | 9 5/8 – 12 1/4 | 105 000 | 73 000 | 845 000 | 400-900 | 65-150 | 450 | 7 470 | 210 | CA |
*Operating Capacity
**Static Capacity
a(WOB Capacity) in brackets refers to the single On Bottom Bearing option.
b6 1/2″ M6 using standard S22 Driveline & Adjustable. (Length in brackets)
Specifications are based on as new condition and are subject to change without notice.
Metric
| Nominal OD (inch) |
Model | Bit Box to Fixed Bend (m) |
Overall Length (m) |
Hole Size (mm) |
Max WOB* (daN) |
Max Bit Overpull* (daN) |
Absolute Body Overpull** (daN) |
Flow Range (lpm) |
Speed Range (RPM) | Max Diff. Pressure (kPa) |
Torque at Max Diff. Pressure (N.m) |
Max Power (kW) |
Region |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 89 | 7838 | 0.76 | 4.95 | 114 – 149 | 8 200 | 8 200 | 94 000 | 285-570 | 120-235 | 4 585 | 1 500 | 30 | CA |
| 89 | 7838 | 0.76 | 4.95 | 114-149 | 8 200 | 8 200 | 94 000 | 285-570 | 120-235 | 6 550 | 2 100 | 45 | US |
| 121 | 7822 | 1.27 | 5.11 (5.38)b |
149-200 | 24 000 (14 700)a |
13 800 | 194 000 | 380-950 | 50-140 | 3 410 | 3 190 | 40 | CA |
| 121 | 7838 | 1.27 | 6.99 | 149-200 | 14 700 | 13 800 | 194 000 | 570-950 | 80-140 | 5 900 | 6 030 | 80 | CA&US |
| 121 | 7850 | 1.27 | 7.19 | 149-200 | 14 700 | 13 800 | 194 000 | 380-1040 | 65-180 | 7 760 | 6 050 | 110 | US |
| 165 | 7828 | 1.42 | 5.70 (5.97)b |
200 – 251 | 40 500 (29 500)a |
23 000 | 245 000 | 570-1510 | 50-140 | 4 340 | 6 790 | 90 | CA |
| 165 | 7840 | 1.42 | 6.46 | 200 – 251 | 29 500 | 23 000 | 245 000 | 1140-1890 | 105-180 | 6 210 | 8 410 | 150 | CA&US |
| 197 | 7830 | 1.70 | 7.16 | 244 – 311 | 39 000 | 32 000 | 284 000 | 1510-3410 | 65-150 | 4 650 | 15 190 | 220 | US |
| 203 | 7830 | 1.70 | 7.16 | 244 – 311 | 47 000 | 32 000 | 376 000 | 1510-3410 | 65-150 | 3 100 | 10 130 | 160 | CA |
*Operating Capacity
**Static Capacity
a(WOB Capacity) in brackets refers to the single On Bottom Bearing option.
b6 1/2″ M6 using standard S22 Driveline & Adjustable. (Length in brackets)
Specifications are based on as new condition and are subject to change without notice.
-
FEATURES & BENEFITS
-
- High allowable WOB (weight on bit) and load capacities.
- Equipped with 2° Fixed Bend Assembly.
- Features the HDD Driveline for shortened overall length.
- Inhouse manufactured components adhere to Wenzel’s high standard of premium materials and quality production.
- Patented design.
Download the Motor Handbook PDF
The Wenzel Motor Handbook is also available as a free download on your mobile device.
-
GALLERY
-
-
TECHNICAL SPECIFICATIONS
-
Imperial
Nominal OD
(inch)Model Bit Box to Fixed Bend
(inch)Overall Length
(ft)Hole
Size
(inch)Max
WOB*
(lbs)Max Bit Overpull*
(lbs)Absolute Body Overpull**
(lbs)Flow Range
(GPM)Speed Range (RPM) Max Diff. Pressure
(psi)Torque at Max Diff. Pressure
(ft.lbs)Max Power
(HP)Region 3 1/2 7838 30 16.2 4 1/2 – 5 7/8 18 500 18 500 212 000 75-150 120-235 665 1 103 40 CA 3 1/2 7838 30 16.2 4 1/2 – 5 7/8 18 500 18 500 212 000 75-150 120-235 950 1 575 60 US 4 3/4 7822 50 16.7
(17.6)b5 7/8 – 7 7/8 54 000
(33 000)a31 000 436 000 100-250 50-140 500 2 350 55 CA 4 3/4 7838 50 22.9 5 7/8 – 7 7/8 33 000 31 000 436 000 150-250 80-140 860 4 450 105 CA&US 4 3/4 7850 50 23.5 5 7/8 – 7 7/8 33 000 31 000 436 000 100-275 65-180 1 130 4 460 145 US 6 1/2 7828 56 18.7
(19.6)b7 7/8 – 9 7/8 91 000
(66 000)a51 000 550 000 150-400 50-140 630 5 010 120 CA 6 1/2 7840 56 21.2 7 7/8 – 9 7/8 66 000 51 000 550 000 300-500 105-180 900 6 200 200 CA&US 7 3/4 7830 67 23.5 9 5/8 – 12 1/4 88 000 73 000 638 000 400-900 65-150 680 11 200 295 US 8 7830 67 23.5 9 5/8 – 12 1/4 105 000 73 000 845 000 400-900 65-150 450 7 470 210 CA *Operating Capacity
**Static Capacity
a(WOB Capacity) in brackets refers to the single On Bottom Bearing option.
b6 1/2″ M6 using standard S22 Driveline & Adjustable. (Length in brackets)
Specifications are based on as new condition and are subject to change without notice.
Metric
Nominal OD
(inch)Model Bit Box to Fixed Bend
(m)Overall Length
(m)Hole
Size
(mm)Max
WOB*
(daN)Max Bit Overpull*
(daN)Absolute Body Overpull**
(daN)Flow Range
(lpm)Speed Range (RPM) Max Diff. Pressure
(kPa)Torque at Max Diff. Pressure
(N.m)Max Power
(kW)Region 89 7838 0.76 4.95 114 – 149 8 200 8 200 94 000 285-570 120-235 4 585 1 500 30 CA 89 7838 0.76 4.95 114-149 8 200 8 200 94 000 285-570 120-235 6 550 2 100 45 US 121 7822 1.27 5.11
(5.38)b149-200 24 000
(14 700)a13 800 194 000 380-950 50-140 3 410 3 190 40 CA 121 7838 1.27 6.99 149-200 14 700 13 800 194 000 570-950 80-140 5 900 6 030 80 CA&US 121 7850 1.27 7.19 149-200 14 700 13 800 194 000 380-1040 65-180 7 760 6 050 110 US 165 7828 1.42 5.70
(5.97)b200 – 251 40 500
(29 500)a23 000 245 000 570-1510 50-140 4 340 6 790 90 CA 165 7840 1.42 6.46 200 – 251 29 500 23 000 245 000 1140-1890 105-180 6 210 8 410 150 CA&US 197 7830 1.70 7.16 244 – 311 39 000 32 000 284 000 1510-3410 65-150 4 650 15 190 220 US 203 7830 1.70 7.16 244 – 311 47 000 32 000 376 000 1510-3410 65-150 3 100 10 130 160 CA *Operating Capacity
**Static Capacity
a(WOB Capacity) in brackets refers to the single On Bottom Bearing option.
b6 1/2″ M6 using standard S22 Driveline & Adjustable. (Length in brackets)
Specifications are based on as new condition and are subject to change without notice.