In today’s volatile oil market, drilling contractors and oil companies face a constant challenge: how to expand drilling capacity without overspending capital.
For procurement professionals at major drilling contractors, the challenge isn’t just finding a rig—it’s finding an asset that meets rigorous API standards and is ready for immediate mobilization.
That’s why more procurement managers and supply chain teams are turning to used oil drilling rigs — especially in-stock, fully inspected, ready-to-deploy units that deliver performance at a fraction of the cost of new builds.
This article explains how to evaluate second-hand used oil drilling rigs, what technical factors matter most, and why in-stock refurbished rigs from RIGRS offer a practical, low-risk solution.
Why Choose a RIGRS Used Oil Drilling Rigs Instead of a New Build?
New drilling rigs typically require 12–24 months of manufacturing lead time and substantial capital expenditure. In contrast, professionally refurbished rigs can often be delivered within weeks at 30–60% lower capital cost.
| Factor | New Rig | Used / Refurbished Rig |
| Delivery time | 12–24 months | 4–10 weeks |
| Capital cost | Very high | Significantly lower |
| Deployment speed | Slow | Fast |
| ROI cycle | Long | Short |
| Availability | Limited | In-stock units available |
For contractors bidding on fast-track drilling programs, time to deployment is often more critical than having a brand-new rig.
What Makes a Used Oil Drilling Rigs Reliable?
Not all second-hand rigs are equal. A professionally refurbished oil rig should undergo:
Structural inspection
Mast & substructure load testing
Drawworks overhaul
Mud pump inspection
Power system diagnostics
Control system upgrade
Full safety compliance review
RIGRS ensures each used drilling rig is technically evaluated, refurbished where necessary, and documented for operational readiness.
1. The “Ready-to-Work” Advantage: Beating the Lead-Time Trap
A new ZJ70 or ZJ50 skid-mounted rig can take over a year from down payment to spudding.Our current inventory of refurbished and inspected rigs eliminates this bottleneck. Whether it is a Truck-Mounted XJ Series for fast-paced workover programs or a Skid-Mounted ZJ Series for deep exploration, these assets are currently in-stock and ready for FAT (Factory Acceptance Testing).
2. Technical Due Diligence: Beyond the Surface
For a technical procurement manager, “used” must mean “re-certified.” Our inventory undergoes a stringent evaluation process that focuses on the critical path of drilling operations:
Structural Integrity (Mast & Substructure)
API RP 4G Inspections: All masts and substructures undergo Category III or IV inspections. We provide full NDT (Non-Destructive Testing) reports on critical load-bearing welds and pins to ensure structural fatigue is within safety tolerances.
Corrosion Management: Assets are verified for wall-thickness integrity, particularly in units previously deployed in high-salinity or H2S environments.
Power & Transmission (The Rig’s Heart)
Engine Bench Testing: Caterpillar and Cummins power packs are load-tested to verify fuel efficiency and horsepower output. We provide comprehensive overhaul records (0-hour or mid-life status).
VFD & SCR Modernization: For electric rigs, we inspect and, where necessary, upgrade the drive systems to ensure compatibility with modern digital drilling software.
The Mud System & Pressure Control
Triplex Mud Pumps: Liners, valves, and fluid ends are inspected for wear.
BOP Stacks: Our in-stock Well Control equipment comes with valid pressure test certificates and rubber-seal renewals, ensuring compliance with local regulatory bodies (e.g., BSEE or equivalent).
3.Financial Logic: Maximizing ROI and Reducing TCO
Purchasing a high-quality used rig is a strategic financial decision.
Lower CapEx
Typically 40–60% of the cost of a comparable new rig, enabling faster capital recovery.
Asset Liquidity
High-demand models such as ZJ50DB or XJ750 retain resale value, offering a clear exit strategy after contract completion.
Fleet Standardization
Maintaining common legacy models reduces spare parts inventory, simplifies crew training, and lowers lifecycle operating costs.
Types of Used Oil Drilling Rigs Available
1.Land Drilling Rigs
Ideal for onshore oilfield development.
Typical specs:
Hook Load: 1,500–3,000 HP
Drilling Depth: 3,000–7,000 m
Mast: K-type or telescopic
Power: Diesel-electric or mechanical drive
Used for well intervention, re-entry, and completion work.
Features:Mobile design,Lower horsepower,Fast rig-up time,Suitable for mature oilfields.
| Model Type | Capacity / Depth | Drive System | Condition |
| ZJ70/4500DB | 7,000m / 450t | AC-VFD Electric | Refurbished 2025, API Spec |
| ZJ50/3150L | 5,000m / 315t | Mechanical/Compound | Low hours, Desert Pack |
| XJ750 Workover | 100t Hook Load | 10×8 Self-Propelled | Certified 0-hour Overhaul |
Key Technical Components Buyers Should Evaluate
Drawworks
The heart of the rig hoisting system.
Rated horsepower,Brake system condition,Drum and shaft wear,Clutch and transmission status.
Used rigs often come with triplex mud pumps.
Fluid end wear,Liner & piston condition,Maximum working pressure.
Rotary System
Rotary table torque rating,Top drive condition (if equipped),Bearing and gearbox integrity,Power System,Generator hours,Engine overhaul history,Electrical control system age.
Current Featured Inventory (Available for Immediate Inspection)
| Model Type | Capacity / Depth | Drive System | Condition |
| ZJ70/4500DB | 7,000m / 450t | AC-VFD Electric | Refurbished 2025, API Spec |
| ZJ50/3150L | 5,000m / 315t | Mechanical/Compound | Low hours, Desert Pack |
| XJ750 Workover | 100t Hook Load | 10×8 Self-Propelled | Certified 0-hour Overhaul |
Case Example – Fast Deployment Success
A Middle Eastern drilling contractor needed a 2,000 HP land rig within 3 months for a fast-track field program.
Solution provided:
In-stock oil drilling rig refurbished,Drawworks overhaul,New mud pump liners,Electrical system upgrade.
Outcome:Delivered in 8 weeks.Saved 42% vs new build.Successfully drilled 5 wells in first year.
FAQ: Buying Used oil Drilling Equipment
Q: Are used oil drilling rigs safe for high-pressure environments?
A: Yes, provided they are paired with certified and pressure-testing BOP stacks (API 16A) and have undergone full structural recertification.
Q: How do you handle logistics for international rig delivery?
A: Our team manages modular breakdown, specialized heavy-lift shipping, and on-site reassembly (commissioning) globally.
Q: Can used rigs be upgraded with modern automation?
A: Absolutely. We specialize in retrofitting used rigs with automated catwalks, power slips, and integrated digital driller cabins to meet modern safety standards.
Q: Are used oil drilling rigs safe to operate?
A: Yes — when properly refurbished and inspected, used rigs meet operational safety standards.
Q: How long can a refurbished rig last?
A: With proper maintenance, a rebuilt rig can operate reliably for many years.
Q: Can used rigs be upgrading?
A: Yes. Top drives, mud pumps, control systems, and power modules can all be modernized.
Trust & Verification: Our Commitment
We welcome independent third-party inspections by agencies such as ModuSpec, ABS, or DNV. Every rig can be suppling with a full technical data package including inspection reports, overhaul records, and equipment lists.
[Request a Full Technical Data Package & Inspection Video]
Looking for a specific configuration?
Contact our technical sales team to receive availability, specifications, and inspection documentation for our current in-stock rigs.
RIGRS – Reliable Used Drilling Rigs, Ready When You Are.
