The 350HP Workover Rig (XJ350) is a high-performance heavy-duty truck-mounted workover unit, serving as a key upgraded model beyond the 250HP medium-duty rigs in the full product lineup. Adopting a professional 350HP high-power diesel power assembly and heavy-duty 10×8 self-propelled chassis, this rig achieves a perfect balance of ultra-strong field mobility and heavy-load operation capacity. Equipped with a 31.7m high-strength lattice mast and upgraded heavy-load hoisting system, it stably supports 2400m medium-deep well routine workover and heavy overhaul operations, covering complex working conditions that 250HP rigs cannot handle. Featuring modular integrated layout, imported reliable transmission system and optimized hydraulic control logic, the whole machine fully complies with API 4F and international petroleum machinery standards. It is widely applied for medium-large oilfield block maintenance, medium-deep well heavy repair, and frequent cross-region cluster operation projects, delivering outstanding heavy-load stability, construction efficiency and comprehensive cost-effectiveness.
Configured with certified high-efficiency diesel power unit and matched Allison professional transmission assembly, outputting stable 350HP rated power and abundant high-torque reserve. Compared with 250HP rigs, it features stronger power surplus, faster hoisting response and more stable full-load continuous operation, fully meeting the power demand of 2400m medium-deep well heavy overhaul and complex high-resistance wellbore treatment.
Adopts upgraded 5×6 heavy-duty multi-rope travelling system and thickened integral forged load-bearing components, with a maximum hook load up to 900kN. It effectively copes with heavy-load working conditions such as large-scale casing repair, severe paraffin blockage removal, stuck pipe disposal and medium-deep well heavy tripping, greatly expanding the scope of on-site heavy-duty operation scenarios.
Equipped with heavy-duty 10×8 self-propelled drive chassis, featuring strong bearing capacity, excellent road passing performance and low turning radius. It supports rapid integral cross-well and cross-region relocation without auxiliary hoisting and transportation equipment, adapting to complex road and rugged terrain conditions for dispersed medium-deep well cluster operations.
Scientifically integrates power, hydraulic, heavy-duty hoisting and electric control modules with standardized compact layout, saving on-site construction space. Equipped with full-automatic hydraulic mast lifting system and humanized centralized operation platform, it simplifies operating procedures, reduces manual labor intensity and significantly improves overall construction efficiency and operational safety.
Adopts internationally renowned brand core transmission components and optimized reinforced mechanical structure, with stable operating performance and ultra-low failure rate. Universal vulnerable parts design and standardized maintenance channels simplify daily inspection and upkeep, effectively reducing long-term operation and spare parts investment for large-volume medium-deep well maintenance projects.
Upgraded high-efficiency heat dissipation, dust-proof and wear-resistant structure, with expanded adaptive temperature range and enhanced weather resistance. It can operate stably in flat oilfields, harsh deserts, low-temperature cold regions and hilly terrains, adapting to diversified complex field working environments worldwide.
| Product | 350HP Workover Rig (XJ350) |
|---|---|
| Product line | Workover Rigs |
| Workover depth (2 7 / 8 " thicken DP) (m) | 4000 |
|---|---|
| Overhaul workover depth (2 7/8” DP) (m) | 3200 |
| Nominal hook load (kN) | 650 |
| The max. loading (kN) | 900 |
| The height of mast (m) | 23.5 |
| The diameter of rope/effective number of rope (mm/n) | Φ26/8 |
| Maximum pulling speed of hook (m/s) | 1.1 |
| The dimension of moving state (including mast) (m) | 13910×2705×4320 |
| Weight of the whole set (kg) | 31490 |
For a useful technical response, include the target well conditions, operating depth or pressure, expected quantity, destination and any required configuration.
Send an InquiryAvailable configurations can be matched to the equipment model, operating conditions and project requirements.
The following questions address common equipment selection and operating considerations.
The 350HP XJ350 heavy-duty workover rig adopts an upgraded 350HP high-power drive system and 900kN maximum hook load, supporting 2400m medium-deep well operations, which is deeper and heavier than the 1800m operation limit of 250HP rigs. It is equipped with a professional imported transmission system and 10×8 all-terrain chassis, enabling it to handle heavy-load and complex wellbore working conditions that medium-duty rigs cannot undertake, achieving a full-dimensional upgrade in power, load capacity and terrain adaptability.
Yes. Featuring a heavy-duty 10×8 self-propelled chassis and optimized vehicle body structure, the rig has outstanding trafficability and flexible steering performance. It supports rapid integral cross-well and cross-region transfer without auxiliary equipment, perfectly adapting to frequent operation switching of dispersed medium-deep well clusters in complex terrain areas.
The standard model is professionally designed for 2400m medium-deep well heavy workover operations. We can adjust core configurations and hoisting parameters according to customer on-site working conditions to meet customized medium-deep well operation requirements.
The XJ350 heavy-duty rig is specially developed for medium-deep well heavy-load overhaul and complex wellbore treatment. It can efficiently complete heavy paraffin removal, large casing repair, stuck pipe salvage and high-intensity tripping operations, which are beyond the load capacity of conventional 150HP and 250HP light & medium-duty rigs.
We provide complete professional equipment operation and maintenance manuals, full-set original spare parts supply and long-term free remote technical guidance. We can also arrange senior professional engineering teams for on-site precision commissioning, installation guidance and one-on-one operator training according to large-scale project demands.
We possess mature R&D and standardized manufacturing capabilities for 350HP XJ350 heavy-duty workover rigs, with all products strictly manufactured in accordance with API 4F and international petroleum machinery authoritative standards. Targeted at medium-deep well heavy-load overhaul and complex terrain frequent operation scenarios, this rig achieves precise power and load upgrade based on 250HP medium-duty rigs, avoiding insufficient power of low-horsepower rigs and cost redundancy of high-end heavy rigs. Adopting imported professional transmission system and reinforced all-terrain chassis structure, the equipment features stable full-load operation, strong environmental adaptability and ultra-low failure rate. Every rig undergoes strict factory full-load impact testing and 48-hour continuous operation debugging before delivery to ensure reliable and efficient field operation. We provide full-process one-stop services including personalized scheme customization, standardized production, global shipping and professional after-sales technical support, helping customers improve medium-deep well heavy-duty operation efficiency and reduce comprehensive oilfield maintenance costs.
Explore nearby products to compare equipment scope before sending an inquiry.
The 150HP Workover Rig is a lightweight, cost-effective, and highly mobile petroleum workover unit specially designed for shallow well and conventional oilfield routine maintenance operations
The 250HP Workover Rig (XJ250) is a mid-tier, high-mobility truck-mounted petroleum workover unit, serving as an upgraded alternative to the entry-level 150HP workover rig
The 450HP Workover Rig (XJ450) is a high-grade heavy-duty truck-mounted workover unit, serving as a core upgraded heavy-duty model above the 350HP rig in the full product lineup
