Products

Home / Offshore Equipment / Fixed Platform Workover Rig Details

Product Categories

SHXJ225 offshore workover rig

SHXJ225 offshore workover rig

SJ Petroleum Machinery (Sinopec Group subsidiary) has built offshore drilling & workover equipment since 1941. API/ISO certified. We supply everything from ultra‑light intervention rigs to heavy‑duty workover units – all field‑proven.

Full‑Size Mast – 38m Clear Height：The mast stands 38 meters (125 ft) clear height – enough to handle triple stands of drill pipe (28m stands). That’s the same as many drilling rigs. The mast is a telescopic bootstrap design with dual hydraulic cylinders, self‑erecting even without a platform crane.

Skidding System with Long Stroke：The substructure includes hydraulic skid beams with a 3m stroke per pull. You can move the rig across a multi‑well platform without any crane assistance. Total skid travel is unlimited (re‑pin and pull again). Well spacing up to 3m is covered in one move.

Send Inquiry

Technical Specifications – SHXJ225 Heavy Offshore Workover Rig

Parameter Value (Metric) Value (Imperial)
Model SHXJ225 SHXJ225
Max. Hook Load 2,250 kN 506,000 lb
Drawworks Power 550 kW AC VFD 740 hp
Top Drive 2,250 kN AC VFD (standard) 506,000 lb
Workover Depth (2-7/8" tubing) 6,000 m (with 2.375" tubing) 19,700 ft
Workover Depth (3-1/2" tubing) 4,800 m 15,750 ft
Light Drilling Depth (4-1/2" DP) 3,500 m 11,500 ft
Drilling Depth (5" DP, light) 2,800 m 9,200 ft
Mast Type Telescopic bootstrap, dual cylinder –
Mast Clear Height 38 m 125 ft
Mast Capacity (static) 2,700 kN 607,000 lb
Substructure Height 6.0 m (adjustable ±0.5m) 19.7 ft
Substructure Footprint 9.5 m x 7.2 m (31' x 24') –
Max Single Module Weight ≤ 25 tons (can split to 18t) ≤ 55,000 lb
Total Operating Deck Load ~135 tons (fully rigged up) ~298,000 lb
Rotary Table 20‑1/2" opening (for larger tools) –
Skid Stroke 3.0 m per pull 9.8 ft
Power Requirement 600V/690V, 50/60Hz, 800 kVA –
Certifications API 4F, 7K, 8C, 7‑1; ISO 9001; HSE –


Applications – The SHXJ225’s Natural Habitat

Operation Typical Details Why SHXJ225 Excels
Deep workover (>4,500m) Pulling heavy tubing strings, deep packers 2,250 kN hook load – real margin
Sidetracking (medium radius) 200‑500m windows, horizontal sections Top drive + AC VFD = smooth kickoffs
Well deepening (300‑500m) Adding hole below existing TD Enough torque and hoisting for 5" drill pipe
Batch drilling of new wells 10‑20 new wells from existing platform Faster than moving a full drilling rig on/off
Heavy fishing Milled tooth bits, lost BHA components High torque and precise jarring control
Casing running & cementing 9‑5/8" or 7" casing strings Top drive with casing running tool
Platform abandonment Pulling all tubing, cutting casing, setting plugs Full workover + light drilling in one package

Not suitable for: Deep drilling beyond 3,500m in hard rock, or heavy drilling with large bits (>12‑1/4"). For that, you need a dedicated drilling rig like our SJF450DB.

Best fit platforms:

  • Large fixed platforms with 25‑30 ton crane capacity

  • Fields with deep reservoirs (4,000‑5,500m)

  • Platforms originally designed for drilling but now used only for workover – the SHXJ225 is lighter than most original drilling rigs

  • Operators who want to eliminate the workover barge and have a permanent heavy intervention solution

Product Series – Where SHXJ225 Sits in the Big Picture

Our complete offshore fixed platform rig family (workover + drilling):

Model Hook Load Primary Role Relative Cost
SHXJ90 – 112 – 158 900‑1,580 kN Workover only $
SHXJ225 2,250 kN Heavy workover + light drilling $$
SJF315DB / 450DB 3,150‑4,500 kN Full drilling $$$

OEM Customization – Tailored to Heavy Duty Requirements

Because the SHXJ225 is often used in non‑standard ways (light drilling, batch work, deep intervention), we offer extensive customization.

Real examples from past projects:

Customer Request Our Engineering Solution
"Our platform crane is 20 tons, not 25” Split the drawworks into two separate modules: motor + gearbox (12t) and drum (9t). Mast into 4 sections (5‑6t each). Total modules: 15, heaviest 12t.
"We want to drill 12‑1/4" holes to 2,500m” Upgrade mud pump capacity (add a second 1,600 hp pump skid). Reinforce mast for higher rotary torque.
"We need to handle 13‑3/8" casing” Larger rotary table (27‑1/2" opening), taller mast (42m) – special order.
"Platform has 380V only – no 690V” Add 380V‑to‑690V step‑up transformer (2.5 tons). Or rewind all motors for 380V (longer lead time).
"We want to use the rig for P&A on 20 wells” Add automated pipe handling (iron roughneck, pipe racking system) to speed up repetitive tripping.
"We have no crane at all – just a helideck” This is extreme – but we designed a self‑erecting version with a hydraulic davit that can lift all modules from a supply boat. Requires calm seas.

Lead time for custom SHXJ225:

  • Standard (no module splitting): 9‑10 months

  • With module splitting (for lower crane capacity): 11‑12 months

  • With extra drilling equipment (mud pumps, etc.): 12‑14 months

Why Choose SJ for the SHXJ225?

Reason Why It Matters for Heavy Workover
Decades of heavy rig experience We’ve built over 500 workover rigs and 100+ drilling rigs. The SHXJ225 borrows mast design from our SJF315 drilling rig – proven and robust.
Field‑proven in deep wells Multiple SHXJ225 units have worked in the South China Sea (water depth 200m+ platform) and Middle East (5,500m wells).
Top drive expertise We manufacture our own AC VFD top drives (licensed technology). That means single‑source responsibility – no finger pointing between rig builder and top drive supplier.
Heavy load testing Every SHXJ225 is load tested to 110% of rated hook load at our 750‑ton test stand. You’re welcome to witness.
Global service network SHXJ225 spares stocked in Houston, Dubai, and Singapore. Our heavy rig specialists are available for on‑site commissioning and emergency support.
Sinopec group support Financial stability, access to group‑wide technical resources, and a track record of delivering large projects on time.

Customer quote (real, paraphrased):
"We bid out a requirement for a 2,200 kN workover rig to four suppliers. SJ was not the cheapest, but they were the only one who did a site visit to our platform before quoting. The rig they delivered required zero deck reinforcement – something the others said was impossible.” – Project manager, Middle East offshore field.

Frequently Asked Questions (FAQ)

Q1: Is the SHXJ225 a workover rig or a drilling rig?

A: Legally and by API definition, it’s a workover rig (rated for hoisting, not full drilling loads). But practically, it can do light drilling – sidetracks, deepening, batch drilling of new wells up to 2,500‑3,000m. If you need to drill 4,000m+ new wells from scratch, look at SJF450DB.

Q2: What crane capacity do I need on my platform?

A: Standard SHXJ225 requires a platform crane capable of lifting 25 tons (for the heaviest module). If your crane is only 20 tons, we can split modules further – but that increases rig‑up time and number of lifts. Minimum possible with extreme splitting: 15 tons (but you’ll have 18+ modules).

Q3: Does the top drive come standard? Really?

A: Yes – the SHXJ225 includes a full AC VFD top drive as standard equipment, with pipe handler (single joint). No extra cost line item. This is a major value difference from competitors who treat top drive as an expensive option.

Q4: Can I run this rig without platform power?

A: No – the SHXJ225 requires platform AC power (600V or 690V, 800 kVA). If your platform has insufficient generation, we can supply a separate power module (diesel generator skid, about 25 tons – needs its own deck space). But honestly, if you have no platform power, a hydraulic rig like HXJ135 is a better fit.

Q5: What’s the maximum well depth for workover?

A: For 2‑7/8" tubing, we’ve done 6,000m (19,700 ft). For 3‑1/2" tubing, about 4,800m. For heavy drill pipe work, stay under 4,000m. Contact us for a specific depth vs. hook load curve.

Q6: How long does it take to rig up?

A: With a 4‑person crew and platform crane available: 3‑4 days from modules on deck to first job. With extreme module splitting (18+ modules): 5‑6 days. If you have a permanent skid base and keep the rig on platform, rig‑up is one‑time.

Q7: What kind of warranty?

A: 18 months from shipment or 12 months from commissioning (whichever first). Top drive components: 24 months. We offer extended warranty up to 5 years on major structural components (mast, substructure) for an additional fee.

Q8: Do you provide operator training?

A: Yes – 2 weeks on‑site training (classroom + hands‑on) for up to 8 crew members, including top drive operation and basic troubleshooting. We also offer advanced training at our Jingzhou facility with a full‑scale simulator.

Q9: Can the SHXJ225 be moved to another platform?

A: Yes – it’s modular. A full teardown, transport, and rig‑up on a different platform takes about 2‑3 weeks. However, at this size, most operators keep the rig permanently on one platform and use it as a "resident” workover unit.

Tag:

Related Products

(0/10)

clearall