The XJ750/ZJ30 is the smallest fixed-station rig in the skid line, sized around a 1700kN hook on a 5×6 string reeved with φ29mm line, rated for 1600–3000m of hole on 114mm drill pipe. Power comes from two 800kW diesel gensets through an AC-DC-AC bus, with the drawworks geared 2-forward/2-rear under stepless speed control rather than a fully VFD drive train. A double-telescopic K-type mast of 32m and a 5m substructure keep the spread compact, and the φ520mm (20.5”) rotary table opening matches that lighter duty envelope. Where an oilfield block needs a permanent well site but the program does not justify a 1000hp-class skid, this unit brings the fixed-station advantage — no carrier chassis, no road re-rigging — at the bottom of the skid range.
The hoisting envelope is built around a 1700kN maximum hook load reeved 5×6 with φ29mm drill line. That geometry is matched to the 3000m depth rating rather than over-built, so tripping pulls stay inside the line and hook ratings on the 114mm pipe program.
Power is supplied by two 800kW diesel engine sets through an AC-DC-AC transmission. This drive train is simpler than the full VFD systems on the larger skids and is chosen for fixed sites where the load profile stays steady and a familiar, serviceable DC-link drive is preferred.
The mast is a 32m double-telescopic K-type derrick rather than one fixed section, which shortens transport and erection height even on a rig that mounts on a permanent skid. Its sections telescope to full working height once the substructure is set.
A 5m-high substructure carries the floor, keeping the whole skid package low and compact. The smaller φ520mm (20.5”) rotary table opening is sized to match this lighter casing and drilling program, not the large-diameter strings of the deeper rigs.
The drawworks uses a 2-forward/2-rear gearbox with stepless speed regulation on top of the discrete ratios. Operators get stepped mechanical gears for coarse range selection and smooth speed control for fine adjustments during tripping and rotary drilling.
The rig’s nominal drilling depth runs 1600–3000m on 114mm drill pipe, which defines the shallow-to-mid program it serves. Within that envelope the fixed skid removes the relocation cycle of a mobile rig, so a cluster of nearby wells can be drilled and worked over without tearing down the spread.
| Product | 750HP Skid Mounted Rig (XJ750 ZJ30) |
|---|---|
| Product line | Drilling Rigs |
| Nominal drilling depth (114mm DP) | 1600~3000m | Open diameter of rotary table | φ520mm (20.5”) |
| Max. hook load | 1700kN | Qty.× power of diesel engine | 2×800kW |
| Traveling system | 5×6 | Shift of Drawworks | 2 F+2 R, Stepless speed regulation |
| Dia. of Drill line | φ29mm | Height of substructure | 5m |
| Power transferring system | AC-DC-AC | Mast model and height | Double telescopic, K-type,32m |
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 750HP skid-mounted rig with truck-mounted units usually ask about installation and relocation.
The difference is where the rig spends its time. On a permanent pad the skid stays put — mast, drawworks and substructure assembled once, the 1700kN hoist and 32m mast left standing between wells — which suits a block that will be re-drilled or worked over on the same site for years. A truck-mounted rig, by contrast, earns its keep on scattered locations where the unit must move to the next well and rig up again.
No. The skid is pre-assembled at the factory and the core systems are pressure- and function-tested before dispatch. On site the work is foundation fixing, piping connection and drive-alignment check — the derrick and substructure are raised as one unit rather than built piece by piece. Commissioning time is set by the cellar height and the mud-system hookup, not by the rig itself.
The skid rig is rated for 3000 m drilling on 4 1/2″ drill pipe at the 1700 kN hook. Workover depth is not a single catalogue number — it is set by the tubular size, the hook-load margin and the mast height for the specific string. For a permanent-pad program above 3000 m, the drawworks ratio, line reeving and substructure height are quoted against the well data rather than chosen from a table; send the planned depth, tubular and maximum expected pull and the rating is confirmed on that basis.
Yes. Built for a permanent pad, the rig runs continuous drilling and workover duty without relocation cycles: two 800kW gensets feed the AC-DC-AC bus, and the 1700kN hoist, 32m mast and 5m substructure are assembled once and left standing between wells in the cluster. That suits blocks that drill and work over the same site year after year, where tearing the spread down between wells is the cost being avoided.
The fixed skid ships with the installation drawings, the AC-DC-AC drive manual and the factory test report for the 1700kN hoist, plus a recommended spare list for the first operating period. Remote technical support is provided at no charge, and because the two 800kW gensets and 2F+2R drawworks are standard across the smaller skid range, spares follow one catalog. On-site rig-up supervision and operator training can be arranged for the first block.
Commercial terms are confirmed in the quotation for the exact configuration, quantity and destination.
Manufactured to API 4F international petroleum machinery standards at the Jingzhou plant under ISO 9001:2015 quality management; the 1700kN hoist is proof-loaded and the 32m double-telescopic mast cycled through its telescope and lock positions 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.
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.
