Technical Specifications – SHXJ158 Offshore Workover Rig
|
Parameter
|
Metric
|
Imperial
|
|
Model
|
SHXJ158
|
SHXJ158
|
|
Rig Type
|
Fixed platform workover & light drilling rig
|
–
|
|
Max. Hook Load
|
1,580 kN
|
355,000 lb
|
|
Drawworks Power (AC VFD)
|
400 kW
|
536 hp
|
|
Drawworks Power (Hydraulic)
|
2 x 132 kW diesel engine (or platform hydraulic)
|
2 x 177 hp
|
|
Workover Depth (2-7/8" tubing)
|
4,200 m
|
13,800 ft
|
|
Workover Depth (3-1/2" tubing)
|
3,500 m
|
11,500 ft
|
|
Light Drilling Depth (4-1/2" DP)
|
2,200 m
|
7,200 ft
|
|
Mast Type
|
Telescopic double‑cylinder bootstrap mast
|
–
|
|
Mast Clear Height
|
32 m
|
105 ft
|
|
Substructure Height
|
4.5 m (adjustable ±0.5m)
|
14.8 ft
|
|
Max Single Module Weight
|
≤ 16 tons (can split to 12 tons)
|
≤ 35,200 lb
|
|
Total Operating Deck Load
|
~98 tons (rigged up)
|
~216,000 lb
|
|
Top Drive Option
|
1,580 kN AC VFD top drive
|
–
|
|
Rotary Table (standard)
|
17‑1/2" opening, 360 hp
|
–
|
|
Power Requirement (AC VFD)
|
600V/690V, 50/60Hz, 700 kVA
|
–
|
|
Certifications
|
API 4F, 7K, 8C; ISO 9001; ISO 14001; OHSAS 18001
|
–
|
Applications – Where the SHXJ158 Really Works
|
Task
|
Typical Details
|
|
Routine workover
|
Pulling rods & tubing, pump replacement, downhole regulator changes – wells up to 4,200m
|
|
Heavy workover
|
Stuck packer retrieval, casing patch, millout operations
|
|
Fishing
|
Broken rods, parted tubing, dropped tools – up to 1,580 kN pull capacity
|
|
Sidetracking
|
Short radius (≤250m) – ideal for bypassing collapsed zones
|
|
Well deepening
|
Extend existing wells by 200‑300m of new hole
|
|
Cement plug & abandonment
|
Squeeze cementing, plug setting, P&A prep
|
|
Snubbing‑light
|
With optional snubbing unit interface, can handle live well work (though not a full snubbing unit)
|
Best fit: Fixed platforms in water depths 5‑50m, originally built for moderate workover duty. Particularly popular in fields with well depths between 2,500m and 4,000m where a smaller SHXJ135 would struggle but a full SHXJ180 is overkill.
Product Series – Where the SHXJ158 Sits
SJ’s offshore workover rig family (fixed platform):
|
Model
|
Hook Load
|
Typical Application
|
|
SHXJ90
|
900 kN
|
Light intervention, shallow wells (≤2,500m)
|
|
SHXJ112
|
1,120 kN
|
Standard workover
|
|
SHXJ135
|
1,350 kN
|
Medium workover
|
|
SHXJ158
|
1,580 kN
|
Medium‑heavy workover + light drilling (sweet spot)
|
|
SHXJ180
|
1,800 kN
|
Heavy workover (deeper wells, heavier tubing)
|
|
SHXJ225
|
2,250 kN
|
Heavy drilling hybrid (almost a light drilling rig)
|
OEM Customization – Because Your Platform Isn’t Generic
We start with the SHXJ158 base design, then adapt it to your exact platform constraints and operating preferences.
What we can change:
|
Customization
|
Options
|
|
Module weight reduction
|
Split into 10‑12 modules, heaviest down to 12 tons – for 15‑ton cranes
|
|
Drive type
|
AC VFD (recommended) / Hydraulic (diesel or platform hyd.) / Diesel‑mechanical
|
|
Top drive vs. rotary
|
Top drive (optional), rotary (standard), or both (dual drive)
|
|
Mast height
|
Standard 32m, can shorten to 28m for low‑ceiling platform decks
|
|
Skidding system
|
Hydraulic skid beams (your platform) or wheeled bogies (for concrete decks)
|
|
BOP handling
|
Integrated trolley on substructure – no extra crane needed
|
|
Control system
|
Single driller cabin with dual HMI, or remote control from platform control room
|
|
Corrosion upgrade
|
Thermal spray aluminum (TSA) + 316L stainless steel hydraulic lines for extreme tropical / sour service
|
|
Add‑on tools
|
Mud mixing unit, cementing unit skid, data monitoring (WITSML output)
|
Typical customization process (real timeline):
-
Week 1‑2: You send platform drawings, crane curve, well data. We respond with a preliminary module split and deck load report.
-
Week 3‑4: Joint online meeting to review layout. We share a 3D model (Navisworks or STEP).
-
Week 5: Finalize commercial proposal.
-
After order: 8‑10 months to delivery (including full load test at our yard).
Why Choose SJ Petroleum Machinery Over Other Suppliers?
|
Aspect
|
What SJ Offers
|
|
Sinopec parentage
|
Financial stability, technical resources, and field access – we test our designs on Sinopec’s own platforms first.
|
|
Workover specialization
|
We’ve been building workover rigs since 1985. The SHXJ158 is a third‑generation design based on direct feedback from platform supervisors.
|
|
True lightweight
|
Our rigs consistently weigh 25‑30% less than competitors at the same hook load. Verified by independent third‑party weight measurements.
|
|
API compliance without shortcuts
|
All pressure components API‑monogrammed. Full material traceability. Your inspector will find every heat number.
|
|
In‑house test yard
|
50,000 m² assembly yard with 24 rig‑up positions. We erect every SHXJ158 and proof test to 110% of rated load – you’re invited to witness.
|
|
Global parts availability
|
Spare parts hubs in Houston (USA), Dubai (UAE), and Singapore. 24/7 remote support via satellite (we’ve helped troubleshoot from a platform in the South China Sea at 2 am – true story).
|
|
Training that works
|
Hands‑on training at our Jingzhou facility (includes simulator) or on your platform. We don’t just hand you a manual.
|
Frequently Asked Questions (FAQ)
Q1: What’s the difference between SHXJ158 and SHXJ180?
A: 1,580 kN vs 1,800 kN hook load. The SHXJ158 is about 15% lighter on deck (98 tons vs 115 tons). If your platform crane is ≤20 tons and deck load limit is under 100 tons, go with SHXJ158. If you regularly pull stuck pipe above 1,600 kN, consider the 180.
Q2: Can this rig handle coiled tubing?
A: Not directly – it’s a jointed pipe rig. But we can pre‑install an injector head guide chute and hydraulic interface so you can bring a coiled tubing unit onto the platform and use the SHXJ158’s mast to support it. Ask for the "CT‑ready” option.
Q3: What power supply do I need for the AC VFD version?
A: Platform AC 600V or 690V, 50 or 60 Hz, minimum 700 kVA. We also supply a step‑up transformer if your platform only has 380V/480V (but that adds weight).
Q4: Is the hydraulic version as powerful as the AC VFD?
A: For hook load and hoisting speed – yes, similar. For smoothness and fine control (e.g., working near fish), AC VFD is better. For simplicity and field repairability, hydraulic wins. We’ll help you decide based on your crew’s skill level.
Q5: What’s the lead time?
A: Standard SHXJ158 (AC VFD, rotary table) – 8 months from order. Top drive or hydraulic versions add 1‑2 months. Custom module splits add another month. We’ve done rush orders in 6 months – but that requires premium.
Q6: Do you provide offshore installation?
A: Yes. A typical installation takes our team 2‑3 weeks on your platform. We supervise rig‑up, conduct functional tests, and run the first workover job with your crew.
Q7: How do you handle warranty if I’m in a remote location?
A: 18 months from shipment or 12 months from commissioning. We keep critical spares in our regional hubs. For remote troubleshooting, we use video calls (Starlink/VSAT compatible). Field service visits arranged within 10‑14 days for major issues.
Q8: Can I get a version without any Chinese components? (some buyers ask)
A: Many key components (VFD drives, top drive motors, hydraulic pumps) are sourced from global brands (Siemens, ABB, Parker, Rexroth) if you specify. Standard rig uses a mix of high‑quality Chinese components (proven over decades). But we can provide a "global content” bill of materials at extra cost and lead time.
Q9: Do you offer financing?
A: Through Sinopec’s finance arm, we can introduce you to leasing or structured payment plans (e.g., 30% down, 40% on delivery, 30% after 6 months on site). Contact our sales team for current terms.
Tag:
