Land AC VFD Drilling Rig ZJ50DB LS

The Land AC VFD Drilling Rig ZJ50DB LS is a high-end 5000-meter-class full AC variable frequency drive land drilling rig, strictly designed and.

Product overview

The Land AC VFD Drilling Rig ZJ50DB LS is a high-end 5000-meter-class full AC variable frequency drive land drilling rig, strictly designed and manufactured in compliance with API 4F, API 7K and ISO9001 international quality and safety standards. Optimized for 3500-5000m deep well drilling, completion and heavy-duty workover operations, this rig adopts advanced full AC-VFD electric drive technology, replacing traditional mechanical transmission. It features stepless speed regulation, precise load control, low noise and high energy efficiency, perfectly adapting to complex deep stratigraphic variable-load drilling conditions. Adopting optimized lightweight modular skid layout, the LS upgraded version realizes compact structural arrangement, flexible transportation and rapid on-site commissioning. It is widely applicable for deep conventional oil and gas, tight oil, shale gas, deep geothermal and large-scale deep water well projects, serving as an intelligent, efficient and environmentally friendly core equipment for high-standard deep oilfield development and high-end overseas EPC projects.

Nominal Drilling Depth (114mm Drill Pipe)5000m
Nominal Drilling Depth (127mm Drill Pipe)4500m
Maximum Static Hook Load3150kN
Main Drawworks Rated Power1100kW (1500HP)

Core innovative advantages and structural features

Full AC-VFD Stepless Variable Frequency Drive System

Equipped with industrial-grade full AC variable frequency drive unit, realizing full-process stepless speed regulation and precise torque control. Compared with mechanical rigs, it delivers smoother power output, stronger low-speed high-torque performance and better variable-load adaptability, effectively solving drilling sticking and unstable drilling speed problems in complex deep formations. The electric drive mode eliminates mechanical transmission loss, significantly improving comprehensive drilling efficiency.

Optimized Lightweight Modular Skid Structure

The LS upgraded version adopts optimized lightweight integrated skid design for derrick, substructure, VFD power unit and intelligent control cabin. On the premise of ensuring high load-bearing rigidity, the overall weight is reasonably reduced, and module dimensions are optimized to fully conform to international container transportation standards. It greatly reduces cross-regional logistics costs and shortens rig-up and commissioning cycle, with excellent global deployment flexibility.

High-rigidity Heavy-duty Derrick & Substructure

Adopts upgraded high-strength alloy K-type open-front derrick and reinforced box-type substructure. Verified by full-working-condition finite element stress and fatigue analysis, the whole bearing structure features high rigidity, strong anti-deformation and wind resistance, stably coping with long-term heavy-load cyclic drilling of 5000m deep wells and meeting high-intensity continuous operation requirements.

Intelligent Integrated Control System

Configured with fully enclosed intelligent driller control cabin, integrating full-process drilling parameter real-time monitoring, automatic load adjustment, multi-level safety interlock and intelligent fault self-diagnosis functions. The system supports precise digital operation, effectively reducing manual operation errors and improving drilling safety and standardization. It can be matched with remote data transmission module to realize intelligent digital drilling management.

Energy-saving & Environment-friendly & Low Maintenance

Full electric drive design realizes zero on-site fuel emission, low operation noise and low vibration, meeting international environmental protection standards. The simplified transmission structure reduces mechanical wearing parts and failure rate. Universal standardized accessories and intelligent fault early warning function greatly reduce daily maintenance difficulty and long-term comprehensive operation costs.

Strong Full-condition Adaptability

Key structural components adopt multi-layer weather-resistant and anti-corrosion treatment; electrical and frequency conversion components are equipped with dust-proof, moisture-proof and wide-temperature resistant protection modules. The whole machine can operate stably in plains, hills, Gobi deserts and other complex terrains, adapting to high-temperature, low-temperature, windy and dusty harsh working environments.

Technical specifications

Nominal Drilling Depth (114mm Drill Pipe)5000m
Nominal Drilling Depth (127mm Drill Pipe)4500m
Maximum Static Hook Load3150kN
Main Drawworks Rated Power1100kW (1500HP)
Rotary Table ModelZP375
Hoisting System Rope Lines6 x 7 / 12 lines
Drilling Wireline Diameter35mm
Drive ModeFull AC-VFD Variable Frequency Electric Drive
Derrick TypeHigh-strength K-type Open-front Lightweight Derrick
Standpipe Working Pressure35MPa
Working Ambient Temperature-35C ~ +55C
Executive StandardAPI 4F, API 7K, ISO9001

Application fields

  • Deep onshore conventional oil and gas well drilling and completion engineering
  • Deep shale gas, tight oil and other unconventional deep energy resource development projects
  • Deep geothermal well exploration, deep thermal resource development and heating supporting engineering
  • Ultra-deep industrial water wells, mine deep water source wells and municipal key water supply projects
  • Deep oilfield heavy-duty workover, complex downhole accident treatment and old well deepening & reconstruction
  • High-standard deep oilfield block development and high-end overseas intelligent drilling EPC turnkey projects

OEM and customized solution

Harsh Environment Customization

Optional ultra-low temperature cold-resistant modification package for alpine regions; enhanced dust and sand sealing system for desert Gobi oilfields; heavy-duty salt spray anti-corrosion coating for coastal humid operation sites.

VFD System Performance Upgrade

Support customized variable frequency parameter calibration, low-speed torque amplification and anti-fluctuation optimization to adapt to complex deep formation ultra-heavy load drilling conditions.

Lightweight Structure Optimization

Further adjust module weight distribution and structural layout according to customer well site and logistics conditions to realize more flexible transportation and installation.

Intelligent Function Expansion

Support top drive system matching, automatic pipe handling device installation, remote cloud data monitoring and intelligent drilling system upgrade to realize full intelligent drilling operation.

Exclusive Turnkey Service

Provide personalized equipment color painting, customer brand logo marking, project-dedicated spare parts package and full-cycle professional after-sales technical support services.

Contact and inquiry

Use the official contact information for model selection, specification discussion, and project inquiry.

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