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. Unlike the smaller ZJ30, this rig runs a full AC-VFD-AC drive from three 1000kW gensets, with the 735kW drawworks under stepless speed control and a 1-shift stepless rotary table. The circulation side is a real mud plant here — two 1300hp pumps feeding a Φ102mm manifold at 35MPa into ≥180m³ pits. A 43m K-type mast and 7.5m substructure, over a φ700mm (27.5”) rotary table, mark the step up to a fixed drilling and workover station for mature-field secondary development and geothermal programs.
Hoisting is sized at 2250kN maximum hook load on a 5×6 string with φ32mm drill line. The larger wire rope and higher hook rating versus the ZJ30 carry the heavier 4000m trip loads and the deeper workover pulls without derating the string.
Three 1000kW diesel gensets feed an AC-VFD-AC bus, replacing the older AC-DC-AC link. The VFD gives stepless speed control to both the 735kW drawworks and the rotary, so rotary rpm and line speed move continuously rather than in discrete gear jumps.
Circulation is built as a plant: two 1300hp mud pumps push through a Φ102mm high-pressure manifold rated 35MPa, and the solid-control system holds ≥180m³ of effective mud volume. That is the capacity a 4000m hole needs for cuttings transport and weighting, rather than a single auxiliary pump.
A 43m K-type derrick sits on a 7.5m-high substructure, raising the floor enough for BOP-type hardware underneath. The φ700mm (27.5”) rotary opening handles the intermediate casing programs that the smaller φ520mm table cannot.
The drawworks delivers 735kW (1000hp) under stepless speed regulation, matched to the VFD bus. Operators set the fast-line speed smoothly for tripping and back-reaming, and the VFD holds torque through the slow lifting ranges.
With its own mud plant, VFD control and 7.5m substructure, the ZJ40D is specified for blocks that will be re-drilled or worked over year after year. The fixed skid means the rig is not torn down between wells in the cluster, which is the cost case against running a mobile rig for the same program.
| Product | 1000HP Skid Mounted Rig (ZJ40D) |
|---|---|
| Product line | Drilling Rigs |
| Nominal drilling depth (114mm DP) | 2500~4000m | Open diameter of rotary table | φ700mm (27.5”) |
| (127mm DP) | 2000~3200m | Qty.× power of diesel engine | 3×1000kW |
| Max. hook load | 2250kN | Shift of Drawworks | stepless speed regulation |
| Traveling system | 5×6 | Height of substructure | 7.5m |
| Diameter of Drill line | φ32mm | Mast model and height | K type, 43m |
| Mud pump Qty ×power | 2×1300hp | Drawworks power | 735kW (1000hp) |
| Transmission type | AC-VFD-AC | Mud high pressure manifold | Φ102mm (diameter) ×35MPa |
| Rotary table gear | 1 shift stepless speed regulation | mud tank effective volume of solid control system | ≥180m3 |
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 evaluating the 1000HP ZJ40D skid rig usually start with depth, hook load and the 2×1300HP mud pump spread.
The ZJ40D steps up from the 750hp ZJ30 with a 2250kN maximum hook reeved 5×6 over φ32mm line, a 735kW drawworks under stepless VFD control, and a circulation plant of two 1300hp mud pumps on a Φ102mm / 35MPa manifold. Rated 2500–4000m on 114mm drill pipe (2000–3200m on 127mm), it carries the deeper trips and sustained continuous duty of a fixed station that the smaller skid is not sized for.
The rig ships as mated modules rather than knocked-down parts. On arrival the work is foundation preparation, skid mating, and connection of the VFD bus, the two 1300hp mud pumps and the ≥180m³ solid-control pits. With the module tests already completed at the factory, the site sequence is a matter of days for a crew familiar with skid rigs.
The ZJ40D works both duties on one hoisting envelope: drilling to 2500–4000 m on 114 mm drill pipe, and workover to 7500 m on tubing using the 2250 kN hook and 5×6 string, so the same skid covers drilling and deep repair on the same location.
The VFD cabin and MCC are enclosed and climate-controlled, which is the main climate answer for a fixed station; the three 1000kW gensets carry cold-start and dust filtration, and the ≥180m³ mud pits can be fitted with heated liners so circulation does not stop in cold snaps. For desert service the drive-room ventilation and radiator sizing are set for sustained full load in high heat.
Delivery includes the VFD system manual, the factory test report for the 2250kN hoist and the mud-plant hydrotest record, plus a recommended spare list for the first operating period. Remote technical guidance is provided at no charge, and the three 1000kW gensets and 735kW drawworks follow a standard parts catalog. On-site commissioning and operator training can be arranged for the first campaign.
Commercial terms are confirmed in the quotation for the exact configuration, quantity and destination.
Manufactured to API 4F and API 4F and API 7K specifications at the Jingzhou plant under ISO 9001:2015 quality management; the 2250kN hoist is load-tested and the Φ102mm manifold pressure-checked to 35MPa before dispatch, and certificate scope is listed in the quotation.
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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