The 850HP Truck-Mounted Rig (XJ850/ZJ40 series) is a top-tier ultra-heavy-duty dual-power petroleum workover and drilling rig, serving as the ultimate high-end model in the full-series truck-mounted rig lineup. Equipped with dual 630HP high-power diesel engines and a customized 14×10 ultra-reinforced multi-axle off-road chassis, this unit delivers a comprehensive rated power of 850HP, breaking the load and construction depth limits of conventional 750HP and lower-grade rigs. It features a industry-leading 225T maximum hook load and 180T rated hook load, supporting 4000m medium-deep drilling and 8000m ultra-deep well workover operations. Adopting a 38m high-strength trapezoidal lattice mast and upgraded heavy-load hydraulic drive & traveling system, the rig integrates ultra-large bearing capacity, extreme condition resistance and flexible self-propelled mobility. Fully compliant with API 4F and international petroleum machinery standards, it is exclusively designed for super-large oilfield ultra-deep well overhaul, high-intensity heavy-load downhole operations and large-scale geothermal engineering projects, providing ultra-stable and high-efficiency construction solutions for global high-standard oilfield scenarios.
Adopts dual 630HP high-performance diesel engines for combined output, forming an 850HP super power unit with massive torque reserve. Compared with 750HP models, it achieves stronger power surge and more stable power output, completely eliminating power attenuation and insufficient torque during ultra-deep well heavy tripping, stuck pipe handling and long-cycle full-load operations.
Matched with optimized 5×6 multi-rope traveling system and thickened heavy-duty load-bearing components, the maximum hook load reaches 2250kN (225T) with a rated load of 1800kN (180T). It far surpasses the load limit of ordinary high-horsepower rigs, easily coping with extreme heavy-load working conditions of 8000m ultra-deep wells.
Equipped with a standardized 38m trapezoidal lattice mast with integral reinforced welding technology, featuring excellent bending resistance and pressure resistance. The automatic hydraulic erecting/folding and precise pull rod positioning structure improves overall structural stability, ensuring safe and efficient pipe running and tripping in ultra-deep well construction.
Upgraded 14×10 multi-axle heavy-duty off-road chassis with widened large-span hydraulic telescopic outriggers. It realizes ultra-high structural stability and cross-country passing ability, supporting full-load integral vehicle transfer and long-term on-site heavy-load operation without structural deformation or shaking.
The fully enclosed luxury integrated control cabin is equipped with upgraded high-precision load sensors, real-time depth-torque monitoring and multi-level safety interlock protection. It realizes visualized, automated and precise operation of ultra-deep well heavy-load construction, effectively reducing operational risks in high-intensity continuous working cycles.
Adopts industrial-grade anti-corrosion and dust-proof coating, enhanced wear-resistant transmission components and large-flow enhanced heat dissipation system. It stably supports 24-hour uninterrupted full-load operation in high-temperature deserts, severe cold high-altitude areas and dusty harsh oilfield environments, greatly extending equipment service life and reducing failure downtime.
| Product | 850HP Truck Mounted Rigs (XJ850 ZJ40) |
|---|---|
| Product line | Drilling Rigs |
| Drilling depth (4 1/2” DP) m | 4000 |
|---|---|
| Max fastline pull kN | 280 |
| Max. Load kN | 2250 |
| Drill line diameter mm (in) /effective quantity n | Φ32 (1 1/4") /10 |
| Max hoisting speed m/s | 1.4 |
| Traveling system | 5×6 |
| Engine | CAT C18/630 bhp 2 sets |
| Transmission | ALLISION M6620AR 2 sets |
| Clear height of mast m | 39m /38m |
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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 850HP XJ850/ZJ40 rig adopts upgraded dual 630HP engines with higher comprehensive power output, and is equipped with a 225T ultra-large maximum hook load, realizing dual capabilities of 4000m drilling and 8000m ultra-deep well workover. It features stronger heavy-load resistance, higher construction efficiency and wider engineering adaptability, fully meeting higher-standard ultra-deep well heavy-duty construction demands that 750HP rigs cannot undertake.
No. It adopts an integrated self-propelled truck-mounted design. After folding the mast and retracting hydraulic outriggers, the whole equipment can travel independently at a maximum speed of 72km/h. It saves high-cost large-scale hoisting and trailer transportation fees, realizing efficient cross-region rapid relocation.
This rig integrates drilling and workover functions. It supports 4000m medium-deep oil and gas well drilling operations and 8000m ultra-deep well heavy-load overhaul, remediation and maintenance work, achieving multi-purpose of one machine and greatly improving equipment utilization rate.
Yes. The whole machine is professionally optimized for extreme working conditions. The upgraded power system, reinforced load-bearing structure and enhanced heat dissipation & dust-proof system ensure stable 24-hour full-load continuous operation in high-temperature desert, severe cold high-altitude and dusty harsh environments.
We provide complete professional technical documents, full-set spare parts supply and lifelong free remote technical guidance. For global super-large oilfield key projects, we can arrange senior engineering teams for on-site installation, commissioning and one-on-one professional operator training services.
We possess leading R&D and precision manufacturing capabilities for 850HP ultra-high horsepower dual-purpose truck-mounted drilling and workover rigs, with all XJ850/ZJ40 series products strictly manufactured in accordance with API 4F and ISO international petroleum industry authoritative standards. We focus on high-end customized solutions for ultra-deep well heavy-load projects, adopting upgraded dual-power collaborative technology and 225T ultra-heavy-load structural design to achieve dual drilling and workover functions, breaking the performance limits of conventional high-horsepower rigs. Every 850HP truck-mounted rig undergoes strict factory full-load impact testing, 24-hour continuous operation debugging and multi-dimensional safety performance inspection before delivery to ensure zero failure in field extreme operations. We provide full-process one-stop services including exclusive scheme design, personalized customization, precision manufacturing, factory acceptance and global door-to-door shipping. Supported by a complete global spare parts supply network and professional petroleum engineering technical team, we deliver long-term stable after-sales guarantee and technical support for global high-end oilfield projects, maximizing customer comprehensive project benefits.
Explore nearby products to compare equipment scope before sending an inquiry.
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