The Land AC VFD Drilling Rig ZJ90DB is a super heavy-duty skid-mounted full AC variable frequency land drilling rig, customized for 7000-9000m ultra-deep well drilling and completion operations.
The Land AC VFD Drilling Rig ZJ90DB is a super heavy-duty skid-mounted full AC variable frequency land drilling rig, customized for 7000-9000m ultra-deep well drilling and completion operations. Complying strictly with API-4F, API-7K and ISO9001 global industry standards, the whole rig adopts fully modular skid split structure, supporting standard containerized multimodal transportation and rapid on-site assembly. As a flagship ultra-deep well drilling equipment, it is exclusively applicable to ultra-deep conventional oil and gas reservoirs, pre-salt formation resources, deep tight oil and shale gas large-scale block development. With ultra-large load capacity, extreme formation adaptability and long-cycle uninterrupted operation capability, it serves as core strategic equipment for global large-scale ultra-deep oilfield exploration and national key energy engineering projects.
All core components including super-large derrick, heavy-duty box substructure, high-power drawworks, power assembly and intelligent control cabin are independently skid-mounted. The optimized split size fully adapts to international cross-border logistics standards, effectively reducing overseas transportation costs and on-site installation cycle for ultra-deep well projects.
Equipped with high-grade independent variable frequency drive units for drawworks, rotary table and main mud pump. It delivers ultra-high stable torque at low speed, realizes stepless precise regulation of drilling parameters, and effectively suppresses drill string resonance and vibration in high-pressure ultra-deep complex strata, greatly improving ultra-deep well drilling safety and efficiency.
Adopts upgraded super-large K-type open-front derrick and reinforced heavy-load substructure. Verified by full-working-condition finite element fatigue simulation and mechanical stress test, the overall structure features ultra-high rigidity and deformation resistance, capable of coping with long-term peak load operation and frequent tripping operations in ultra-deep wells without structural fatigue damage.
Configured with dust-proof, heat-insulated and corrosion-resistant integrated control cabin, integrating full-process drilling data real-time acquisition, intelligent parameter self-optimization, multi-layer electromechanical safety interlock and full-function fault early warning & diagnosis. It realizes indoor automated intelligent operation, minimizing manual intervention and operational risks in long-cycle ultra-deep drilling.
The whole machine undergoes professional sand-proof, dust-proof, high-temperature heat insulation and low-temperature anti-brittle reinforcement treatment. Core electrical and hydraulic components adopt high-grade extreme weather resistant materials, supporting stable continuous operation in desert high-temperature, plateau low-temperature, windy and dusty harsh oilfield environments.
| Nominal Drilling Depth | 9000m (114mm drill pipe) |
|---|---|
| Maximum Static Hook Load | 6750kN |
| Main Drawworks Rated Power | 2200kW |
| Rotary Table Model | ZP605 |
| Overall Drive Mode | Full AC Variable Frequency Drive |
| Derrick Type | Super Heavy-duty K-type Open Front Derrick |
| Working Ambient Temperature | -45C ~ +55C |
| Executive Standard | API-4F, API-7K, ISO9001 |
Flagship does not mean generic: the ZJ90DB is reserved for the 7000-9000 m programmes where pre-salt and ultra-deep completion sections define the engineering. This skid-mounted flagship rates 9000 m on 114 mm drill pipe, 6750 kN static hook load, a 2200 kW drawworks and the ZP605 rotary table, built to API 4F, API 7K and ISO 9001. Fully modular skid splitting keeps derrick, substructure and power assemblies within cross-border logistics norms, and the anti-fatigue structure is validated for long-cycle uninterrupted operation in desert heat, plateau cold and windy, dusty basins.
In your inquiry, state the pre-salt or ultra-deep section pressures and your total well-cost pacing — this unit is selected for turnkey blocks, not one-off holes. Confirm the ambient floor (the -45 °C rating is standard), whether a GOST-compliant or 50/60 Hz export electrical build is required, and the explosion-proof classification for hazardous zones. Also flag the heaviest completion string your engineers plan to run, because the 6750 kN rating is priced against that duty rather than against nominal depth.
There is no published sticker price; each rig is priced against the derrick rating, mud-pump pairing and electrical build your international turnkey scope specifies. Before committing, compare the duty case against the lighter 7000 m class: if your hook-load cycle sits below 4500 kN, stepping down cuts capital cost without touching the 9000 m depth envelope. Engineering and commercial questions go straight to our Jingzhou sales team.
Optional ultra-low temperature anti-brittle component package for frigid regions, desert high-temperature heat insulation & full dust sealing system, and high-grade salt spray anti-corrosion coating for coastal humid oilfields to adapt to all harsh working scenarios.
Customizable 50Hz/60Hz international voltage specifications, GOST-compliant power system for Russia and Central Asian markets, and full explosion-proof electrical configuration for hazardous oil and gas working zones.
Optional fully automatic drilling system, cloud remote real-time monitoring platform, big data intelligent fault early warning and automatic pipe handling auxiliary system to improve unmanned operation level.
Precisely adjust skid module dimensions to meet international container shipping standards, optimizing transportation efficiency and adapting to limited-space ultra-deep well pads.
Supporting customized high-pressure heavy-duty mud pump, complete solid control circulation system, exclusive equipment color and customer LOGO spraying, as well as project-dedicated full set of spare parts package delivery.
Related guides: AC VFD vs SCR DC vs mechanical drive comparison and after-sales support and spare parts.
Tell us your target depth, hook load and drive type; our engineers reply within 24 working hours.
Use the official contact information for model selection, specification discussion, and project inquiry.
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