The 4000m Mobile Rig (ZJ5550TZJ225) is the deeper mobile drilling rig of the fleet, rated for 4000m on 4 1/2” drill pipe with a 2250kN maximum hook load. The step up from the 3000m rig is the drivetrain: two CAT C18 engines at 630 bhp, each through an Allison M6620AR gearbox, in place of the C15/M5620AR set. The hoist still runs a 5×6 string over Φ32mm line on 10 effective lines at a 1.4 m/s maximum hoisting speed, but the heavier engine and box lift the hook rating to 2250kN for the longer 4000m trips. A 39m/38m clear-height derrick carries the string, and the unit moves between wells as a truck- or trailer-mounted load.
The 2250kN maximum hook load is the headline upgrade over the 3000m rig's 1800kN, carried on the same 5×6 string with Φ32mm wire rope on 10 effective lines. Fast-line pull stays at 280kN and hoisting speed at 1.4 m/s, matched to the longer 4000m trips.
Two CAT C18 engines at 630 bhp, each coupled to an Allison M6620AR transmission, supply the extra power for the deeper rating. The larger engine and higher-capacity gearbox versus the C15/M5620AR set are what justify the 2250kN hook and 4000m depth envelope.
A 39m (or 38m) clear-height derrick carries the drill string for the 4000m program. The alloy-steel structure is built to keep the whole truck- or trailer-mounted unit within transport limits while holding the heavier mid-depth hoisting loads.
Like the rest of the mobile line, the rig moves between scattered wells as one integrated load on a truck or trailer chassis. No permanent foundation is poured, and on arrival the crew rigs up and drills rather than assembling a spread from knocked-down modules.
Mechanical, hybrid or VFD electric drive can be specified to match the well-block power supply, and the centralized control cabin monitors depth, hook load and system pressure in real time. The modular layout keeps wearing parts interchangeable and maintenance straightforward.
The unit is chosen where the target wells reach 4000m but the operator still needs to move between scattered sites rather than commit to a fixed skid. The C18 drivetrain and 2250kN hook give the depth a permanent station would provide, with the fast relocation of a mobile rig.
| Product | 4000m Mobile Rig |
|---|---|
| Product line | Drilling Rigs |
| Product Model | ZJ5550TZJ225 |
|---|---|
| Drilling depth（4 1/2 DP）m | 4000 |
| Max fastline pull kN | 280 |
| Max. Load kN | 2250 |
| Drill line dia mm（in）/effective qty n | Φ32（1 1/4"）/10 |
| Max hoisting speed | 1.4 |
| Travelling system | 5×6 |
| Engine | CAT C18/630 bhp 2set |
| Transmission | ALLISION M6620AR 2set |
| Clear height of mast m | 39m /38m |
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.
The 4000m mobile rig questions usually begin with drilling depth, hook load and how the unit moves between pads.
The rig is rated for 4000m on 4 1/2” drill pipe, covering medium-deep oil and gas wells, geothermal targets and energy-exploration wells at that depth. The 2250kN hook and the twin CAT C18 / Allison M6620AR drivetrain are sized for the 4000m envelope, which is the step up from the 3000m mobile rig's 1800kN rating.
Different from traditional fixed skid-mounted rigs, the 4000m mobile rig adopts integral mobile structure with fast disassembly, transportation and rig-up capabilities. It greatly reduces relocation cycle and auxiliary construction cost, and is more suitable for scattered well blocks and frequent site migration operations, with higher construction flexibility and economic benefits.
The rig has strong comprehensive adaptability, capable of coping with conventional sedimentary formations, complex interbedded formations and slightly difficult drilling formations. It supports stable drilling and circulating operations in desert, Gobi, high-altitude, low-temperature and muddy well site environments, realizing full-climate and full-terrain adaptive construction.
The rig is built around the 1800 kN hook and the CAT C15 power packs: the closed-loop lubrication on the drawworks and the NDT-checked load-bearing parts keep the 4000 m drilling envelope on line between overhauls. Protection covers over-torque, overspeed and low lubrication, and the drive is sized for continuous rather than intermittent duty. State the planned drilling depth and tubular at order time so the derrick height and drawworks ratio are matched to that envelope.
Yes. The truck or trailer mounting, the drive mode (mechanical, hybrid or VFD), the hoisting and rotary fitment, and the safety-protection package are all specified at order time to match regional road conditions, power supply and well depth. The engine and transmission follow the standard CAT C18 / Allison M6620AR configuration.
Commercial terms are confirmed in the quotation for the exact configuration, quantity and destination.
The 4000m Mobile Rig is a medium-duty fast-moving drilling equipment strictly designed and manufactured in accordance with API Spec 7K and API Spec 8C international petroleum industry standards.
Drilling manuals, rig inspection reports and load-test certificates are supplied with the rig; the substructure and mast erection drawings are provided for the client's lift plan.
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.
