1. Define the rig you actually need
- Deepest well and heaviest casing string in the programme
- Required hook load, drawworks horsepower and mast height
- Mud pump capacity for planned flow rates and hole sizes
- H₂S service, climate and terrain requirements
- Mount type: skid, trailer, truck or desert mobile
2. Check the documents
- Mast and substructure inspection reports (API RP 4G category and date)
- Hoisting equipment inspection records (API RP 8B)
- BOP recertification and pressure test records
- Engine and pump overhaul history and running hours
- Equipment list and any items excluded from the sale
3. Inspect on site
- Structural condition of mast, substructure and welds
- Drawworks brakes, clutches and drill line condition
- Mud pumps: fluid ends, liners, pressure rating
- Power system: gensets or engines, SCR or VFD house
- Rig-up and function test where possible
4. What affects the price
- Horsepower, hook load and depth rating
- Year of build and quality of refurbishment
- Inspection category and certification status
- Included equipment: top drive, BOP stack, camp, spares
- Location and mobilisation cost to your field
5. Plan mobilisation
- Transport loads, permits and route surveys
- Import duties and customs for cross-border moves
- Crew, commissioning and acceptance testing
Frequently asked questions
What inspection standard should a used land rig meet?
Buyers commonly ask for the mast and substructure to be inspected under API RP 4G, typically a Category III or IV inspection, with records showing the results and any repairs.
What affects the price of a used drilling rig?
Horsepower and hook load, age and refurbishment history, inspection category, the condition of pumps, engines and BOPs, included equipment such as top drive and camp, and the current market for rig activity.
Is it better to buy or lease a drilling rig?
Leasing suits short programmes or uncertain demand. Buying suits long programmes where ownership lowers the cost per well. Every RIGSDOM unit is offered both ways.