Hardrock ST250 truck mounted service rig is mobile type of oil and gas service equipment.
ST250 workover rig has the lifting load capacity 675KN and mast length 21m, which is fitted very well for small to middle size oil well.
It is compact design with 6×4 truck chassis and Cat C9 engine and sand winch as premium options. And the 6×6 and 8×4 drive form chassis is available as well to satisfy the customer’s different requirement
ST250 service rig is most suitable for the space limited oil and gas area with great mobility and easy for transportation.
- Specification
| Main Spec. | Value | |
| Mode | ST250 | |
| Nominal minor repair depth (27/8″EUE tubing) | m | 3200 |
| Nominal heavy repair depth (27/8″ Drill Pipe) | m | |
| Max. hook load | Kn | 675 |
| Rated hook load | Kn | 400 |
| Engine model | Cat C9 | |
| Engine power | HP | 325 |
| Hydraulic transmission case model | Allision HT750DR/DB | |
| Transmission type of hydraulic workover rig | Hydraulic + Mechanical | |
| Qty. of traveling system ropes | 4×3 | |
| Mast | m | 18/21 |
| Main rope diameter | mm | 22 |
| Single line pull force | T | 16.2 |
| Hook speed | m/s | 0.2 to 1.4 |
| Approach / departure angle | 18°/12° | |
| Sand Winch Rope | mm | 16 |
| Single line pull force | T | 13.5 |
| Min. ground clearance | mm | 311 |
| Max. Gradeability of truck mounted workover unit | 0.26 | |
| Min. turning diameter | m | 33 |
| Hook block model | YG70 | |
| Swivel model | TC70 | |
| Overall dimension | m | 13.1 × 2.5 × 4.0 |
| Chassis drive form | 6 x 4/6 x 6 | |
| Main unit mass | kg | 30000 |
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