Cardwell 375 HP Workover Rig 320
Compact Cardwell 375 HP workover rig with telescopic mast, Gardner Denver mud pump, and full 111 m³ mud system
View full specification →Workover and service rigs listed through our global sourcing network.
Workover and well-servicing rigs for pulling, swabbing, and completion work — smaller, faster to mobilise than a full drilling rig, and priced accordingly. Oil Rigs Now’s workover inventory (13 units) includes rigs from Service King, Cardwell and other established manufacturers, sized for routine well maintenance through heavier workover programmes. If you need a rig on location fast rather than a multi-week drilling programme, this is the category.
Listings marked “Listed by [Company]” are offered directly by that company or owner. Oil Rigs Now doesn’t carry its own inventory — every listing is placed under a fee arrangement (flat listing fee or sale commission) agreed with the seller. Questions? Call 832-912-5843.
Compact Cardwell 375 HP workover rig with telescopic mast, Gardner Denver mud pump, and full 111 m³ mud system
View full specification →Cardwell KB-200-C 375 HP Telescopic Workover Unit
View full specification →Cardwell KB-200-C 375 HP Telescopic Workover Unit
View full specification →2008 DSI HRI-1000E 1000 HP diesel-electric trailer-mounted workover/drilling rig
View full specification →NOV 5C 104' 250K Mobile Workover Rig — Tier III
View full specification →SK-1000 Trailer-Mounted • 1,000 HP • Hydraulic Top Drive • Fully Kitted
View full specification →2012 Service King 1000 HP Trailer-Mounted — Ready to Drill
View full specification →New 675 HP Service King mobile workover rig on 6-axle carrier — ready to drill FOB Houston
View full specification →Service King SK775 Workover/Drilling Rig — Unit 12
View full specification →Service King SK775 Workover/Drilling Rig — Unit 5
View full specification →New mobile workover rig with 112-ft mast and 400,000 lb hook load capacity
View full specification →Brand-new 775 HP carrier-mounted workover rig — deep-service capable to 18,000 ft
View full specification →Compact CAT-powered truck-mounted ZJ30 drilling/workover rig — rated to 3,000m, ready for Iraq operations
View full specification →A workover rig is built for well intervention, not for drilling a new hole from surface: pulling and running tubing and rods, swabbing, light completions, and well maintenance. They’re smaller, mobilise faster, and cost less to run per day than a drilling rig, but they’re not a substitute for one on a new-well programme. If your job is re-completing, servicing or working over an existing well, a workover rig is very likely the right tool and a full drilling rig is over-specified and over-priced for the work.
Workover rigs are typically rated by pulling capacity (the load the mast and drawworks can lift) rather than by drilling horsepower, though HP still matters for rotary work if the rig will do any drilling-out or milling. Match rated pulling capacity to your deepest anticipated string weight with margin, not to your average job — the rig that’s adequate for routine tubing pulls can be badly undersized the one time you need to work a stuck string.
Service King and Cardwell units make up a meaningful share of the active US workover fleet and are well understood by crews and service companies — parts availability and familiarity are real practical advantages over less common builds. If a specific manufacturer matters to your crew’s experience or your maintenance contracts, say so up front; Oil Rigs Now can filter for it.