Series of Self-propelled Workover Rigs
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SJ Petroleum Machinery Company has developed series of workover rigs with maximum static load ranging from 300 to 2250kN ( 67440-505800 lbs ) and installed power ranging from 235 to 1300HP, including XJ150, XJ250, XJ350, XJ450, XJ550, XJ650, XJ1000 and XJ1200. The power system, drawworks system and driving system are all installed on a carrier, therefore it is easy for installation and movement. These rigs are suitable for workover operation for wells ranging from 1000 m to 9000 m , and for drilling operation for medium and shallow wells if equipped with a rotary table.
A self-propelled workover rig is mainly composed of chassis, power and driving system, drawworks system, mast, hydraulic/air/electric control system and rotary system. The rig travelling and operation are all powered by a deck engine.
| Model | XJ250（SXJ250） | XJ350（SXJ350 ） | XJ450（SXJ450） | XJ550（SXJ550 ） | XJ650（SXJ650） | XJ1000（SXJ1000） | XJ1200（SXJ1200） |
| Workover depth: | 2000m（27/8〞DP） | 3200m（27/8〞DP） 2500m（31/2〞DP） | 4500m（φ27/8〞DP）3500m（φ31/2〞DP） | 5800m（27/8〞DP） 4500m（31/2〞DP） 3600m（41/2〞DP） | 7000m（27/8〞DP）5500m（31/2〞DP） 4200m（41/2〞DP） | 8000m（27/8〞DP） 6500m（31/2〞DP）5000m（41/2〞DP） | 9000m (27/8〞DP)7500m (31/2〞DP) 6000m (41/2〞DP) |
| Nominal hook load: | 400kN | 600kN | 800kN | 1000kN | 1200kN | 1500kN | 1800kN |
| Max. static load: | 675kN | 900kN | 1125KN | 1350kN | 1470kN | 1800kN | 2250kN |
| Drawworks horsepower: | 250hp | 350hp | 450hp | 550hp | 650hp | 750hp | 1000hp |
| Clearance height, mast | 21m | 31.7m | 34m | 34m | 35m | 38m | 39.3m |
| Height, racking board (to rig floor) | 7.7m | 17.2m | 17.2m | 17.2m | 17.2m | 17.2m | 17.2m |
| Floor height | 2.2m | 3.7m | 3.7m | 4.5m | 4.5m | 6m | 6.7m |
| Traveling system: | 3×4 | 3×4 | 4×5 | 4×5 | 4×5 | 5×6 | 5×6 |
| Drive type, carrier: | 6×6 | 10×8 | 10×8 | 10×8 | 12×8 | 14×8 | 14×10 |
| Dia., wireline: | φ22mm | φ26mm | φ26mm | φ26mm | φ29mm | φ29mm | φ32mm |
| Traveling dimensions | 15.4m×3m×3.85m（16m single stage mast）12m×3m×4.1m（18m double stage mast）13.4m×3m×4.1m（21m double stage mast） | 18.7m×3.1m×4.28m | 19.86m×3.1m×4.28m（34m mast） | 19.86m×3.1m×4.28m（34m mast） | 15.05m×3.2m×3.1m（without mast） | 16.03m×3.3m×3.2m (w/o mast) | 16.03m×3.3m×3.2m(w/o mast) |
| Max. speed | 60km/h（Limiting speed: 45km/h） | 60km/h（Limiting speed: 45km/h） | 60km/h（Limiting speed: 45km/h） | 60km/h（Limiting speed: 45km/h） | 60km/h（Limiting speed: 45km/h） | 60km/h (Limiting speed 45km/h) | 60km/h (Limiting speed: 45km/h) |
| Min. turning radius | 14m | 17m | 17m | 17m | 18m | 21m | 22m |
| Traveling weight | 29400kg（Total weight varies according to different configurations） | 46000kg（Total weight varies according to different configurations） | 50000kg（Total weight varies according to different configurations） | 50800kg（Total weight varies according to different configurations） | 40000kg (without mast) | 54500kg (w/o mast) | 54500kg (w/o mast) |
| Ambient temperature | -29 ～ +50 ℃ | -29 ～ +50 ℃ | -29 ～ +50 ℃ | -29 ～ +50 ℃ | -29 ～ +50 ℃ | -29 ～ +50 ℃ | -29 ～ +50 ℃ |
