Truck Trailer Mounted Drilling Rig ZJ40CZ (T)

How to Match the ZJ40CZ (T) to Your Project

Operators tend to assume towed semi-trailer rigs top out around 3000 m, and that anything deeper needs a self-propelled truck — the ZJ40CZ (T) is the model that pushes that boundary out to 4000 m. Rated at 4000 m on 114 mm drill pipe, it pairs a 2250 kN static hook load and a 746 kW (1000 HP) main drawworks with a ZP375 rotary table, a 32 mm wireline on 6x7/12 lines, and a matching 746 kW mud pump feeding a 35 MPa standpipe. It tows at up to 60 km/h behind a standard tractor and raises its high-strength folding derrick hydraulically, with no large lifting crew on site.

Three inputs decide whether this is the right 4000 m mobile unit for you: the legal axle load and overall towing height on your corridor, because a 2250 kN-class semi-trailer is a heavy load to certify country by country; the mud programme, since the 1000 HP pump is sized for it and your flow and pressure targets set the fluid-end choice; and the share of heavy workover in the campaign, because the 2250 kN hook is what lets the same rig pull a mid-deep completion string after the wells are drilled.

For operators standardising on one fleet, we can document interchangeability of the mast, drawworks and pump packages across models — useful when a ZJ30CZ (T) and a ZJ40CZ (T) share the same crew and the same spare-parts bin.