The ZJ80 is a fixed-station rig sized by its depth envelope: 6000–9000m nominal drilling with 114mm drill pipe, or 5000–8000m with 127mm pipe, on a 6750kN hook rating strung 7×8 with Φ42mm drill line under a 48m K-type mast. The drive chain is electric rather than mechanical, five 1200kW diesel generators feed an AC-VFD-AC bus, with a 2210kW (3000hp) drawworks under stepless speed control and three 1600hp mud pumps on the circulation side. Substructure heights of 10.5m and 12m plus a 1257.3mm (49.5-inch) rotary table accommodate the casing and BOP hardware that ultra-deep programs require of this skid mounted rig. That configuration is selected for continuous duty, a rig that stays on one location for years, drilling and then working over the well it drilled, which is exactly the assignment the truck-mounted fleet cannot take.
Power comes from five 1200kW diesel generator sets onto a VFD bus, and the 2210kW (3000hp) drawworks draws on that bus with stepless speed regulation. Hoisting torque is available from crawl speed upward, and because drive control is electric, the heavy stands of an 8000m string are handled in one continuous motion rather than a series of clutch shifts.
The block is strung 7×8 with Φ42mm drill line to reach a 6750kN maximum hook load. At nominal depth with 114mm pipe the string weight plus jarring margin stays inside the drawworks rating, and the same hoisting train serves the deep-repair and fishing programs the rig takes on after drilling.
Substructure height is chosen at order time, 10.5m or 12m, so the BOP stack, spool pieces and wellhead hardware fit under the floor. The skid breaks into road-transportable modules that re-mate on a prepared foundation, giving a fixed-station rig the mobilization option of a unit that can be moved between strategic locations when a campaign ends.
Circulation is sized to the hole: three 1600hp mud pumps feeding a Φ102mm manifold rated at 52MPa, with a solids-control system holding at least 600m³. That combination covers the circulating pressure losses of an 8000m column and the hole-cleaning rates the drilling program calls for between trips.
The control cabin houses the VFD drive and MCC boards, and the drawworks operates under stepless speed control from the same system. Hoisting speed is set and held electronically, which removes the load surge of mechanical gear shifting and gives the driller repeatable control of string velocity in the critical final meters of each stand.
The -45℃ to 55℃ operating band is engineered in: low-temperature steel in the skid structure, heated enclosures for the VFD and MCC cabins, cold-start and dust filtration on the generator sets, and ventilation sized for sustained full load in desert heat. The 48m mast and substructure are rated for the wind and ice loads of high-altitude sites.
| Product | 2500HP Skid Mounted Rig (ZJ80) |
|---|---|
| Product line | Drilling Rigs |
| Nominal drill depth (114mm DP) | 6000~9000m | Rotary table open nominal diameter | Φ1257.3mm (49.5”) |
| (127mm DP) | 5000~8000m | Diesel generator pcs×power | 5×1200kW |
| Max. hood load | 6750kN | Drawworks gear shift | stepless speed regulation |
| Travel system structure | 7×8 | Substructure height | 10.5m,12m |
| Drill wireline diameter | Φ42mm | Mast type and height | K type, 48m |
| Mud pump pcs ×power | 3×1600hp | Drawworks power | 2210kW (3000hp) |
| Travel type | AC-VFD-AC | Mud high pressure manifold | Φ102mm (diameter) ×52MPa |
| Rotary table shift quantity | 1shift or 2 shifts stepless speed regulation | Effective capacity of mud of solid system | ≥600m3 |
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.
Buyers comparing the 2500HP ZJ80 with the 2000HP class usually ask about the 6,750 kN hook and 7×8 line arrangement.
The ZJ80 is the largest fixed-station unit in the skid line: hook rating rises to 6750 kN on a 7×8 string with Φ42 mm line, drawworks power to 2210 kW (3000 hp), and the power plant to five 1200 kW generators feeding an AC-VFD-AC bus. Nominal drilling depth reaches 6000–9000 m on 114 mm pipe (5000–8000 m on 127 mm), which is the load and depth margin over the ZJ70DB class.
The rig ships as pre-assembled modules, each with its factory test completed, the drawworks module under 2210kW load, the mud system pressure-checked, the VFD/MCC cabinets pre-commissioned. On site the work is foundation preparation, skid mating, and inter-module piping and cable hookup, typically a matter of days with the rig's own craneage instead of weeks of field assembly.
Drilling and heavy workover share the same hoisting envelope on this rig. In drilling duty it makes hole to 6000–9000m with 114mm pipe; in workover duty the 6750kN hook and 48m mast handle deep repairs, completion runs and fish recovery at well depths beyond the reach of the truck-mounted fleet.
The electrical drive is the main climate answer: the VFD and MCC cabins are enclosed and climate-controlled, the generator sets carry cold-start and dust systems, and the mud plant's ≥600m³ capacity with heated tank options keeps circulation running when surface temperatures approach -45℃. For desert service, the drive-room ventilation and radiator sizing are set for sustained full load in 55℃ heat.
Delivery includes installation drawings, technical manuals and factory test reports for each module, plus a recommended spare list for the first operating period. Remote technical guidance is provided at no charge. For strategic projects, our engineering team can supervise installation, commissioning and operator training on site.
Commercial terms are confirmed in the quotation for the exact configuration, quantity and destination.
Manufactured to API 4F and API 7K under ISO 9001:2015 quality management for deep and ultra-deep drilling programs, including national-scale oil and gas development, deep geothermal projects and large ultra-deep well clusters; confirm the applicable standards and certificates in the inquiry.
Drilling manuals, rig inspection reports and load-test certificates are supplied; the skid dimensions and manifold drawings are provided for site integration. Rig-up supervision is available.
Confirmed in the quotation according to configuration, quantity and destination.
Manuals, conventional spare parts and remote technical guidance are included; on-site commissioning and operator training can be arranged on request.
Payment schedule, Incoterms, port and packaging are agreed in the sales contract.
A recommended spare-parts list for the first operating period is provided with the quotation.
Explore nearby products to compare equipment scope before sending an inquiry.
The ZJ40D is the 4000m-class workhorse of the skid range, rated 2500–4000m on 114mm drill pipe (2000–3200m on 127mm pipe) with a 2250kN maximum hook load reeved 5×6 over φ32mm line.
The ZJ50D takes the skid line into the 5000m class, rated 3500–5000m on 114mm pipe (2800–4500m on 127mm) with a 3150kN maximum hook load.
The ZJ70DB is the standard ultra-deep rig of the skid line, rated 4500–7000m on 114mm pipe (4000–6000m on 127mm) with a 4500kN maximum hook load on a 6×7 string reeved with φ38mm line.
