The Land AC VFD Drilling Rig ZJ70DB is a heavy duty skid mounted full AC variable frequency land drilling rig, specially developed for 5000-7000 m ultra-deep well drilling and completion operations.
The Land AC VFD Drilling Rig ZJ70DB is a heavy duty skid mounted full AC variable frequency land drilling rig, specially developed for 5000-7000 m ultra-deep well drilling and completion operations. Fully compliant with API-4F, API-7K and ISO9001 international quality and safety standards, the entire rig adopts independent modular skid split structure, enabling standardized container transportation and efficient on-site assembly. This model is mainly used for large-scale deep conventional oil and gas reservoirs, deep tight oil, shale gas and ultra-deep geothermal well development. Featuring super heavy-load bearing capacity and long-cycle stable operation performance, it is core intelligent drilling equipment for large domestic and overseas ultra-deep oilfield block projects.
All core components including derrick, integral substructure, main drawworks, power unit and control cabin are designed with independent skid modules. The split structure perfectly adapts to international container sea and land combined transportation, greatly improving overseas project deployment efficiency.
The drawworks, rotary table and mud pump are equipped with separate high-power variable frequency drive motors. It achieves stepless speed regulation and ultra-precise drilling parameter control, effectively suppressing drilling string vibration in ultra-deep complex formations and improving overall drilling safety and efficiency.
Adopts upgraded large K-type front-opening derrick and heavy box-type substructure. Verified by multi-working condition finite element fatigue analysis, the whole structure maintains high rigidity and stability under long-term ultra-deep well heavy-load operation, avoiding structural deformation and fatigue damage.
Equipped with a fully sealed dust-proof and heat-insulated control cabin, integrating full-process drilling data acquisition, automatic parameter adjustment, multi-level electrical and mechanical safety interlock and fault self-diagnosis functions. It realizes indoor intelligent operation and effectively reduces manual operation risks.
The whole machine is treated with enhanced sand-proof, dust-proof, anti-corrosion and low-temperature anti-brittle processes. Key wearing parts adopt universal international oilfield specifications, supporting rapid maintenance and spare parts replacement in global complex well sites.
| Nominal Drilling Depth | 7000m (114mm drill pipe) |
|---|---|
| Maximum Static Hook Load | 4500kN |
| Main Drawworks Rated Power | 1400kW |
| Rotary Table Model | ZP495 |
| Overall Drive Mode | Full AC Variable Frequency Drive |
| Derrick Type | Heavy-duty K-type Open Front Derrick |
| Working Ambient Temperature | -40C ~ +55C |
| Executive Standard | API-4F, API-7K, ISO9001 |
The ZJ70DB land drilling rig for sale from HuBei SJ Petroleum is engineered for one job profile: 5000-7000 m ultra-deep drilling under sustained heavy loads. Before you request a ZJ70DB drilling rig price or quotation, check the three numbers that decide the match — a nominal drilling depth of 7000 m with 114 mm drill pipe, a maximum static hook load of 4500 kN, and a 1400 kW main drawworks. If your programme targets deep conventional reservoirs, deep shale gas or ultra-deep geothermal wells, the full AC variable frequency drive delivers the stepless torque control those formations demand; if your maximum well depth stays below 3000 m, a ZJ40-class or truck-mounted rig will give you the same economics at lower capital cost — our engineers will tell you honestly which way to go.
When you submit a ZJ70DB drilling rig inquiry, include your well design depth, expected formation temperature, ambient site temperature range, and your site electrical standard (50 Hz or 60 Hz). The rig's working range of -40°C to +55°C and API 4F / API 7K / ISO 9001 certification are standard across the fleet; desert, low-temperature and salt-spray packages are factory options that do not change the certified baseline. Every ZJ70DB drilling rig exported from our Jingzhou plant is container-optimized — the modular skid split structure is dimensioned for international container sea-and-land combined transportation, and we provide the complete export documentation package.
All pricing is quoted on request and is configuration-based: drawworks power, mud pump package, solid control system and electrical standard all change the delivered price. We do not publish a fixed ZJ70DB price list because the rig is built to your well programme — but a benchmark quotation is typically returned within 48 hours once your well data is provided.
Optional ultra-low temperature cold-resistant and anti-brittle component package, desert high-temperature heat insulation & dust sealing system, and coastal salt spray anti-corrosion coating reinforcement to adapt to various harsh working conditions.
Customizable 50Hz/60Hz voltage grades, GOST-compliant power system for Russian and Central Asian markets, and full explosion-proof electrical configuration for hazardous oil and gas zones.
Optional automatic drilling control module, remote cloud real-time monitoring system, big data fault early warning and intelligent pipe handling auxiliary system to improve unmanned operation level.
Adjust the external dimensions of each skid module to meet international container transportation standards, optimizing cross-border logistics costs and cycle.
Provide matched high-pressure heavy-duty mud pump, complete solid control system, customized equipment color and customer LOGO, as well as project-exclusive 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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