The mast is designed as a tower-type or multi-section telescoping self-elevating mast, with hydraulic drawworks for lifting and extending. The mast structure is treated with hot-dip galvanizing or hot-spray aluminum, and the exterior is coated with marine-grade anti-corrosion paint.
HZJ40 offshore drilling rig drilling depth: 2500～4000m
HZJ40 offshore drilling rig maximum hook load: 2250kN
HZJ40 offshore drilling rig drawworks power: 735kW
Product introduction
1. The electric-driven offshore drilling rig is driven in a group mode, with individual motors driving the drawworks, rotary table, mud pumps, top drive, and other equipment. The electrical control system is divided into DC and AC control systems.
2.The Drilling Equipment System Module (DES) supports both longitudinal and transverse movement, meeting the operational requirements for cluster well operations on the platform. The Drilling Support System Module (DSM) is equipped with a diesel generator set, air compressor unit, electrical control system, mud tanks, mud pump units, pipe racking system, and other essential equipment.
3. The rig’s drill floor, base, mast, drawworks, driller’s room, mud pump units, high-pressure manifold, diesel generator set, solids control system, and well control system are all designed with a modular configuration. These components have obtained third-party product test certificates ensuring compliance with offshore platform classification requirements.
4. The drawworks features a single-drum design, with a hydraulic disc brake (single or dual disc) as the primary braking system. It can also be equipped with an automatic pipe handling motor.
5. The mast is designed as a tower-type or multi-section telescoping self-elevating mast, with hydraulic drawworks for lifting and extending. The mast structure is treated with hot-dip galvanizing or hot-spray aluminum, and the exterior is coated with marine-grade anti-corrosion paint.
6. The offshore workover rig is highly reliable, with strong wind resistance, excellent corrosion protection, high explosion-proof standards, and zero pollutant discharge, meeting the requirements for offshore workover operations.
7. Certification from classification society, such as CCS, DNV, BV, etc., can be obtained as per the user’s requirements.
Technical Parameters
| Product model | HZJ90DB | HZJ70DB | HZJ50DB | HZJ40DB |
| Maximum hook load kN | 6750 | 4500 | 3150 | 2250 |
| Nominal drilling depth (114 mm) m | 6000～9000 | 4500～7000 | 3500～5000 | 2500～4000 |
| Drawworks power kW | 2210 | 1470 | 1100 | 735 |
| Number of drilling lines in the traveling system | 14 | 12 | 10 | 8 |
| Diameter of drilling lines mm | 45 | 38 | 35 | 32 |
| Mast height m | 47 | 46，47 | 45，46，47 | 33，36 |
| Maximum hook speed m/s | 1.5 | 1.5 | 1.5 | 1.5 |
| Drill floor height m | 10.5，12 | 9，10.5 | 7.5，9 | 7.5 |
| Rotary Table Opening Diameter mm | 952.5，1257.3 | 952.5 | 952.5 | 698.5 |
| Main brake | Disk brake | Disk brake | Disk brake | Disk brake |
| Auxiliary brake | Dynamic braking | Dynamic braking | Dynamic braking | 324WCB, dynamic braking |
| * *Mud pump power hp × number of units | 1600×3 | 1600×3 | 1600×2 | 1300×2 |
| *Power of power unit kW × number of units | 1200×5 | 1200×4 | 1200×3 | 1200×2 |
Items marked with* are recommended configurations
