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 visible change from the ZJ40D is the hoisting geometry: a 6×7 string over φ35mm line, paired with a φ952.5mm (37.5”) rotary table that clears the larger intermediate and production casing strings. Three 1080kW gensets feed an AC-VFD-AC bus driving a 1100kW (1500hp) drawworks, and circulation keeps two 1300hp pumps but grows to ≥320m³ of effective mud volume. A 45m K-type mast stands on a 9m drilling floor, the configuration selected for deep exploration, mature-field deepening and super-deep geothermal fixed stations.
The 3150kN maximum hook load is carried on a 6×7 traveling system with φ35mm drill line, the first move up from the 5×6 string on the ZJ40D. The extra lines and heavier wire rope lift the hook rating for the longer 5000m trips and the heavier casing runs.
A φ952.5mm (37.5”) rotary table opening replaces the φ700mm table of the smaller rigs. That larger clearance is what lets the ZJ50D run the big-diameter intermediate and production casing programs that a 4000m-class table cannot pass.
Three 1080kW diesel gensets feed the AC-VFD-AC bus, sized for the 1100kW (1500hp) drawworks. The VFD holds stepless speed on both drawworks and rotary, with the extra generator headroom for the higher hoisting duty.
A 45m K-type derrick mounts on a 9m-high drilling floor. The raised floor leaves room under the rig for the BOP stack and high-pressure lines that grow with well depth, and the taller mast carries the longer stands for faster tripping.
Circulation stays at two 1300hp mud pumps through the Φ102mm / 35MPa manifold, but the solid-control volume grows to ≥320m³. The larger pit volume is needed to condition and weight mud on deeper holes where cuttings loads and downhole pressures rise.
Sitting between the ZJ40D and the 2000hp-class rig, the ZJ50D is chosen when the program calls for 5000m depth and large casing but not the 4500kN hook of the ultra-deep units. Its fixed skid keeps the spread on one location for the deepening and workover cycle.
| Product | 1500HP Skid Mounted Rig (ZJ50D) |
|---|---|
| Product line | Drilling Rigs |
| Nominal drilling depth (114mm DP) | 3500~5000m | Open diameter of rotary table | φ952.5mm (37.5”) |
| (127mm DP) | 2800~4500m | Qty.× power of diesel engine | 3×1080kW |
| Max. hook load | 3150kN | Shift of drawwork | stepless speed regulation |
| Traveling system | 6×7 | Height of drilling floor | 9m |
| Dia. of Drill line | φ35mm | Mast model and height | K type, 45m |
| Qty.× power of mud pump | 2×1300hp | Drawworks power | 1100kW (1500hp) |
| Transmission type | AC-VFD-AC | Mud high pressure manifold | Φ102mm (dia) ×35MPa |
| Shift of rotary table | 1 shift stepless speed regulation | s Effective capacity of mud tank of solid control system | ≥320m3 |
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.
Questions about the 1500HP ZJ50D class usually begin with its 3,500-5,000 m envelope and the 5×6 traveling system.
The step from the ZJ40D to the ZJ50D is the hoisting geometry and the power bus: the hook rises to 3150 kN on a 6×7 string over φ35 mm line, the rotary table opens to φ952.5 mm (37.5″) to clear larger intermediate and production casing, and three 1080 kW gensets feed a 1100 kW AC-VFD-AC drawworks. The drilling envelope moves to 3500–5000 m on 114 mm pipe (2800–4500 m on 127 mm), against the 4000 m-class rating of the ZJ40D, which is the practical difference in deep-well construction programs.
Modules leave the factory pre-mated and pre-commissioned, so site work is foundation preparation, skid-to-skid alignment, and hooking up the VFD bus, the two 1300hp pumps and the ≥320m³ pits. Because the 6×7 hoist and 1100kW drawworks are already proof-tested, commissioning is a short re-check rather than a full field assembly.
Drilling and deep workover share the same 3150kN hoisting envelope. In drilling duty the rig makes hole to 3500–5000m on 114mm pipe; in workover duty the 6×7 string, φ952.5mm rotary and 45m mast handle deep repairs, large-casing pulls and fishing on wells beyond the 4000m-class rigs.
The enclosed, climate-controlled VFD cabin is the main climate control; the three 1080kW gensets carry cold-start and dust systems, and the ≥320m³ mud plant can be fitted with heated tank options to keep circulation running in low-temperature spells. For hot desert duty the drive-room ventilation and radiators are rated for sustained full load.
Each unit ships with the VFD manual, the 3150kN hoist test report and the mud-plant hydrotest record, plus a recommended spare list for the first operating period. Remote technical guidance is free, and the 1100kW drawworks and 3×1080kW gensets follow one parts catalog. For deep-well projects, our engineers can supervise commissioning and train operators on site.
Commercial terms are confirmed in the quotation for the exact configuration, quantity and destination.
Complying strictly with API 4F and global petroleum machinery industry standards, it is specially developed for large-scale oilfield deep-well exploration & development, mature oilfield secondary capacity expansion and super-deep geothermal engineering project. The derrick and substructure are load-tested to their rated capacities at the Jingzhou plant under ISO 9001:2015 quality management, and the full rig undergoes a factory acceptance test before shipment.
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.
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