Each rig page on Oil Rigs Now carries the facts for that unit. The checks below apply to any rig, so they live here once. None of it replaces your own inspection.
How is a drilling rig assessed?
Land drilling rigs are assessed as packages rather than single machines: the drawworks, mast and substructure set the depth envelope, while the drive type (mechanical, SCR or AC-VFD) determines what the rig costs to run and how readily it handles long horizontal sections.
Workover and well-service rigs are bought on mobility and hook load far more than on raw horsepower. Carrier condition, mast rating and whether the unit is trailer- or truck-mounted usually decide whether it suits a given program.
Semisubmersible rigs are rated on water depth, mooring or dynamic positioning capability and variable deck load. Class and survey position matter as much as the drilling package, because a lapsed survey is a capital item in its own right.
Jackup rigs are rated first on water depth and leg length, then on drilling capability. Class status, leg and spudcan condition and the cantilever envelope decide how quickly a unit can be put back to work.
Barge rigs work inland and in shallow transition zones. Hull condition, draft and the way the drilling package is mounted determine where the unit can be deployed and what a move actually involves.
Cable tool rigs are percussion drills rather than rotary machines. They remain in demand for water wells, shallow holes and formations where rotary circulation is impractical, and they are valued on carrier and drum condition rather than horsepower ratings.
What does the condition label on a listing mean?
Used: for a working unit the decisive items are hours and history on the major components rather than the headline rating. Drawworks, mast and substructure, mud pumps, engines and the BOP stack each carry their own condition and their own replacement cost.
New: the rig has not been worked. For a new build the questions that matter are specification completeness and documentation. Confirm what the quoted package actually includes, what is listed as an option, and what lead time applies to anything still to be fitted.
Refurbished: refurbishment is not a standardized term, so pin down the scope. Ask which components were replaced rather than inspected, who carried out the work, when it was completed, and what documentation accompanies it. A refurbished unit with a documented scope is a different asset from one described as refurbished with no paperwork behind it.
What does it cost to move a rig?
The realistic cost of putting a rig to work includes rig-down, transport, any import or customs handling between the rig's location and your pad, and rig-up at destination. Buyers routinely underestimate this line, and it can move the delivered cost materially.
Where a listing does not state a current location, confirm where the rig physically sits before you model transport. Mobilization cannot be estimated without it.
How is pricing handled?
Asking prices are not published on Oil Rigs Now listings. Bob Neundorf quotes each unit directly, because the figure moves with completeness of the package, component hours, location and how quickly the seller needs to transact.
Treat any figure you have seen quoted elsewhere for a similar rig as a starting reference, not a valuation. Two units with identical horsepower ratings can differ by a multiple once the drilling package, drive type and survey position are compared.
What should a buyer verify before committing?
This is the diligence sequence for any used, refurbished or new drilling asset. None of it is a substitute for your own inspection.
- Component hours, in writing. Drawworks, mud pumps and engines separately, not a single figure for the rig.
- What is physically included. Get the package list as line items. Drill pipe, BOP stack, top drive, mud system and camp are the items most often assumed in and then found out.
- Third-party inspection before funds move. Commission your own inspector rather than relying on any description, including a listing page.
- Documentation and provenance. Ownership, any liens, import history and maintenance records. Missing paperwork is a cost and a delay, not a detail.
- Mobilization, fully costed. Rig-down, transport, permits, customs where relevant, and rig-up at destination.
- Spares and support. Parts availability for the drive type and manufacturer, which decides downtime once the rig is working.
- Specification versus options, on a new build. Confirm what the quote covers and the lead time on anything not yet fitted.
- Refurbishment scope and who performed it. Replaced versus inspected, with dates and documentation.
How to take this further
Bob Neundorf handles pricing, specification detail and inspection access for the rigs listed on Oil Rigs Now. Call 832-563-0880 or email [email protected]. If you are comparing several units, say so on the first call: it is faster to shortlist against your well program than to work through listings one at a time.
Oil Rigs Now is an independent marketing platform for drilling and well-service equipment. It does not hold title to the equipment it lists; each unit is offered by its owner or seller under a listing arrangement, and all specification detail should be confirmed with the seller and your own inspector before you commit funds.