Products

Home / Products / Workover specifications

Product Categories

Workover specifications

Technical Specifications – Complete XJ Series Workover Rig Data Sheets

The table below provides key workover specifications for SJ Petro XJ series self‑propelled workover rigs. For complete data sheets (dimensional drawings, API certifications, test reports), contact our technical sales team.

XJ Series – Core Workover Specifications

Model	Workover Depth (2-7/8″ DP)	Workover Depth (3-1/2″ DP)	Workover Depth (4-1/2″ DP)	Nominal Hook Load	Max Hook Load	Drawworks HP	Engine / Power	Carrier Drive	Mast Height
XJ250	3,200 m (10,500 ft)	—	—	400 kN	735 kN (165,000 lbf)	250 hp	Cat C9 / 350 HP	10×8	31 m
XJ350	3,200 m (10,500 ft)	2,500 m (8,200 ft)	—	600 kN	900 kN (202,330 lbf)	350 hp	360 HP class	10×8	31.7 m
XJ450	4,500 m (14,760 ft)	3,500 m (11,480 ft)	—	800 kN	1,125 kN (252,900 lbf)	450 hp	Cat C13 / 440 HP	10×8	34 m
XJ550	5,800 m (19,000 ft)	4,500 m (14,760 ft)	3,600 m (11,800 ft)	1,000 kN	1,350 kN (303,000 lbf)	550 hp	Cat C15 / 475 HP	10×8	35 m
XJ650	7,000 m (23,000 ft)	5,500 m (18,000 ft)	4,200 m (13,800 ft)	1,200 kN	1,580 kN (355,200 lbf)	650 hp	Cat C18 / 630 HP	12×8	35 m
XJ750	8,000 m (26,200 ft)	6,500 m (21,330 ft)	5,000 m (16,400 ft)	1,500 kN	1,700 kN (382,000 lbf)	750 hp	Dual Cat C15 / 440 HP each	14×8	38 m
XJ1000	8,000 m (26,200 ft)	6,500 m (21,330 ft)	5,000 m (16,400 ft)	1,500 kN	1,800 kN (404,700 lbf)	750 hp	1,000 HP class	14×8	38 m
XJ1200	9,000 m (29,500 ft)	7,500 m (24,600 ft)	6,000 m (19,680 ft)	1,800 kN	2,250 kN (505,800 lbf)	1,000 hp	1,000+ HP (dual engine)	14×10	39.3 m

XJ250 – Detailed Workover Specifications

The XJ250 is rated by customers all over the world as the best economic workover rig for its reliable performance, innovative design and economical cost. This light‑duty self‑propelled rig is mainly used for shallow well workover, oil testing, fishing and pump check operations, equipped with a lifting system, single drum drawworks, hydraulically raised mast and a famous engine with Allison hydromechanical transmission.

Parameter	Specification
Workover depth (2-7/8″ DP)	3,200 m (10,500 ft)
Servicing depth (2-7/8″ EUE tubing)	3,200 m (10,500 ft)
Rated hook load	400 kN (90,000 lbf)
Max hook load	735 kN (165,000 lbf)
Engine	Caterpillar C9/ATAAC, 260 kW (350 HP) at 2,100 rpm
Transmission	Allison 4700 OFS
Derrick height	31 m (102 ft)
Racking board capacity	3,200 m of 2-7/8″ EUE tubing
Traveling system	3×4 (Φ22 mm wireline)
Max travel speed	45 km/h (28 mph) – capable of 60 km/h, field limited
Carrier drive	Self‑propelled 10×8
Overall dimensions (L×W×H)	18.5 × 2.9 × 4.2 m
Weight	50,000 kg (110,230 lb)
Air assist brake system	KOBELT Disc with matched caliper

XJ450 – Detailed Workover Specifications

XJ450 Drilling&Workover Rig has a workover depth up to 4,500 m and a service depth up to 5,500 m. Equipped with rotary table, swivel and drilling tools, it can perform as a mobile drilling rig up to 1,500 m depth. The main rig can be customized with well control, solid control and other systematic setup to become your complete solution to workover and drilling operations.

Parameter	Specification
Workover depth (2-7/8″ DP)	4,500 m (14,760 ft)
Workover depth (3-1/2″ DP)	3,500 m (11,480 ft)
Servicing depth (2-7/8″ EUE tubing)	5,500 m (18,045 ft)
Rated hook load	800 kN (179,850 lbf)
Max hook load	1,125 kN (252,900 lbf)
Engine	Caterpillar C13, 325 kW (440 HP) at 2,100 rpm
Transmission	Allison 4700 OFS
Derrick height	34 m (112 ft)
Racking board capacity	5,500 m of 2-7/8″ EUE tubing
Traveling system	4×5 (Φ26 mm wireline)
Max travel speed	45 km/h (28 mph)
Carrier drive	Self‑propelled 10×8
Overall dimensions (L×W×H)	18.5 × 3.1 × 4.2 m
Weight	55,000 kg (121,250 lb)
Rotary table max load	1,350 kN (303,500 lbf)
Air assist brake system	KOBELT Disc with matched caliper

XJ550 – Detailed Workover Specifications

XJ550 workover rig has a workover depth up to 5,800 m and service depth up to 7,000 m. Equipped with rotary table, swivel and drilling tools, it can perform as a mobile drilling rig up to 2,000 m depth. It is mainly used for medium and shallow well workover, oil testing, fishing and pump check operations.

Parameter	Specification
Workover depth (2-7/8″ DP)	5,800 m (19,000 ft)
Workover depth (3-1/2″ DP)	4,500 m (14,760 ft)
Workover depth (4-1/2″ DP)	3,600 m (11,800 ft)
Servicing depth (2-7/8″ EUE tubing)	7,000 m (23,000 ft)
Rated hook load	1,000 kN (224,800 lbf)
Max hook load	1,350 kN (303,500 lbf)
Engine	Caterpillar C15, 354 kW (475 HP)
Transmission	Allison M5610AR
Mast height	35 m (115 ft)
Racking board capacity	2,000 m of 4-1/2″ DP
Traveling system	4×5 (Φ26 mm wireline)
Max travel speed	45 km/h (28 mph)
Carrier drive	Self‑propelled 10×8
Overall dimensions (L×W×H)	19.87 × 3.1 × 4.2 m
Weight	53,000 kg (116,800 lb)
Derrick wind resistance	Level 12

XJ650 – Detailed Workover Specifications

XJ650 Drilling&Workover Rig is the bestselling heavy duty workover rig of SJ PETRO. Equipped with powerful Cat C18 engine, the XJ650 can serve as a 2‑in‑1 rig to perform both workover and drilling operation. This rig is renowned by the powerful capability, stable performance and great mobility by users in South America, Western Africa and Middle East area.

Parameter	Specification
Workover depth (2-7/8″ DP)	7,000 m (23,000 ft)
Workover depth (3-1/2″ DP)	5,500 m (18,000 ft)
Workover depth (4-1/2″ DP)	4,200 m (13,800 ft)
Drilling depth (3-1/2″ DP)	2,000 m (6,560 ft)
Servicing depth (2-7/8″ EUE tubing)	8,500 m (27,900 ft)
Max static hook load	1,580 kN (355,200 lbf)
Max hook load	1,575 kN (354,000 lbf)
Engine	Caterpillar C18, 470 kW (630 HP) at 2,100 rpm
Racking board capacity	2,000 m of 4-1/2″ DP
Wireline diameter	Φ29 mm (1-1/8″)
Traveling system	4×5
Max travel speed	45 km/h (28 mph)
Carrier drive	Self‑propelled 12×8
Overall dimensions (L×W×H)	19.9 × 3.1 × 4.37 m
Weight	55,000 kg (121,250 lb)
Max wind resistance	30 m/s (98 ft/s)
Air assist brake system	KOBELT Disc with matched caliper

XJ750 – Detailed Workover Specifications

XJ750 Drilling&Workover Rig adopts double Caterpillar C15 engines with Allison transmissions. It is the best‑selling mobile drilling rig for both oil drilling and workover purposes. It can reach up to 3,000 m drilling depth and 8,000 m workover depth, with 1,700 kN max hook load.

Parameter	Specification
Drilling depth (4-1/2″ DP)	3,000 m (9,840 ft)
Workover depth (2-7/8″ DP)	8,000 m (26,200 ft)
Workover depth (3-1/2″ DP)	6,500 m (21,330 ft)
Workover depth (4-1/2″ DP)	5,000 m (16,400 ft)
Max hook load	1,700 kN (382,000 lbf)
Engine configuration	Dual Caterpillar C15, each 325 kW (440 HP)
Transmission	Dual Allison M5610HR
Carrier drive	Self‑propelled 14×8
Mast clearance height	38 m (125 ft)
Racking board capacity	3,000 m of 4-1/2″ DP
Traveling system	6×5
Wireline diameter	Φ29 mm (1-1/8″)
Max travel speed	45 km/h (28 mph)
Overall dimensions (L×W×H)	22.2 × 3.1 × 4.45 m
Weight	76,000 kg (1,676,000 lbs)
Air assist brake system	KOBELT Disc

XJ1200 – Detailed Workover Specifications

XJ1200 workover rig is the biggest self‑propelled truck‑mounted workover equipment – the heavy‑duty flagship of the XJ series. This rig features a massive 2,250 kN maximum hook load, enabling it to handle deep‑well interventions and heavy pipe strings with ease.

Parameter	Specification
Workover depth (2-7/8″ DP)	9,000 m (29,500 ft)
Workover depth (3-1/2″ DP)	7,500 m (24,600 ft)
Workover depth (4-1/2″ DP)	6,000 m (19,680 ft)
Max hook load	2,250 kN (505,800 lbf)
Nominal hook load	1,800 kN (404,640 lbf)
Wireline diameter / effective lines	φ32 mm / 10
Mast clearance height	39.3 m (129 ft)
Max lifting speed of hook	1.36 m/s (4.46 ft/s)
Carrier drive	Self‑propelled 14×10
Overall dimensions (traveling)	22.5 × 3.3 × 4.47 m
Weight	75,000 kg (165,000 lb)

Applications – Where XJ Series Workover Specifications Are Applied

Workover and recompletion – pulling rods, tubing and pumps; fishing; scale removal; zone isolation – covering well depths from 1,000 m to 9,000 m.
Shallow to medium drilling – when equipped with a rotary table, XJ450, XJ550, XJ650 and XJ750 can handle drilling operations for medium and shallow wells, saving the cost of a separate drilling spread.
Fishing and milling – retrieve broken drill pipe, dropped tubing, bit cones and other downhole debris.
Oil testing and pump check operations – XJ250 and XJ350 are ideal for routine testing and pump maintenance.
Cluster well development – self‑propelled 10×8, 12×8, 14×8 or 14×10 carriers allow rapid moves between closely spaced wellheads – no crane, no separate transport.
Remote exploration – self‑propelled carriers access locations with poor roads and no crane support.
Arctic campaigns (-45 °C) – low‑temperature materials and heat preservation technology have been successfully deployed in Russia’s Orenburg field.
Desert development (55 °C+) – sand‑sealed components, oversized cooling and reinforced chassis for Middle Eastern operations.

Why Trust SJ Petro Workover Specifications?

Because workover specifications are only as reliable as the manufacturer who provides them.

Your Need	SJ Petro’s Answer
"I need API 4F, 7K, 8C data sheets for an international tender.”	Full API compliance. Authorised to use API monogram. Complete documentation packages – MTRs, hydrostatic certificates, NDT reports, API data sheets, as‑built drawings.
"I need depth ratings for different drill pipe sizes.”	Our specifications clearly state workover depths for 2-7/8″, 3-1/2″ and 4-1/2″ drill pipe – not just a single number.
"I need one rig that can do both workover and drilling.”	XJ450, XJ550, XJ650 and XJ750 are true 2‑in‑1 rigs – workover at 8,000 m and drilling at 2,000 m when equipped.
"I need reliable power components with global parts availability.”	Caterpillar engines + Allison transmissions – industry standard, parts available in every major oilfield worldwide.
"I operate in extreme cold – down to -45 °C.”	Arctic package – low‑temperature materials, low‑temp hydraulics, battery warmers, engine heaters. Proven in Russia.
"I need a rig that can move quickly between wells.”	Self‑propelled design – max travel speed 45 km/h (28 mph), all components mounted on a single carrier, no disassembly required.

More reasons to trust SJ Petro workover specifications:

Sinopec Group heritage – 80+ years of oilfield equipment engineering, founded in 1941, rooted in Jingzhou, Hubei
Top‑ranked Chinese manufacturer – ranks 2nd on the list of China Top 10 Petroleum Drilling and Production Equipment Manufacturers
In‑house manufacturing – annual production capacity of 100 workover rigs, 100 drilling rigs, 120 cementing units, 80 fracturing units
Global track record – workover rigs delivered to South America, Western Africa, Middle East, United States, Indonesia, Russia and beyond
Full documentation – material test reports (EN 10204 3.1), structural calculations, load test certificates, as‑built drawings, API data sheets
Flexible commercial terms – milestone payments (30/40/30), operating leases and direct financing available for qualified buyers

Frequently Asked Questions (FAQ) – Workover Specifications

Q1: What workover depths can your XJ series rigs reach for different pipe sizes?

A: Our XJ series covers the full depth spectrum with detailed ratings for each pipe size:

Model	2-7/8″ DP	3-1/2″ DP	4-1/2″ DP
XJ250	3,200 m	—	—
XJ350	3,200 m	2,500 m	—
XJ450	4,500 m	3,500 m	—
XJ550	5,800 m	4,500 m	3,600 m
XJ650	7,000 m	5,500 m	4,200 m
XJ750	8,000 m	6,500 m	5,000 m
XJ1000	8,000 m	6,500 m	5,000 m
XJ1200	9,000 m	7,500 m	6,000 m

Maximum hook load ranges from 300 kN to 2,250 kN (67,440–505,800 lbs), with installed power from 235 HP to 1,300 HP.

Q2: Are your workover rigs API certified?

A: Yes. Our XJ series is designed, manufactured and tested in accordance with API Spec Q1, 4F, 7K, 8C and relevant standards including RP500, GB3826.1, GB3836.2 GB7258, SY5202 as well as "3C” compulsory standard. We are authorised to use API monogram on products under these specifications.

Q3: What is the difference between workover depth and servicing depth?

A: Workover depth is the maximum depth at which the rig can perform workover operations using drill pipe (typically 2-7/8″ DP). Servicing depth is the maximum depth at which the rig can perform well servicing operations using EUE tubing (typically 2-7/8″ EUE Tubing). For XJ650, workover depth is 7,000 m (2-7/8″ DP) and servicing depth is 8,500 m (2-7/8″ EUE tubing).

Q4: What is the maximum travel speed of XJ series workover rigs?

A: Maximum travel speed is 45 km/h (28 mph) for most XJ series rigs. The XJ250 is capable of up to 60 km/h, but field operations typically limit speed to 45 km/h for safety. The self‑propelled carrier eliminates the need for lowboy trailers and separate tractors.

Q5: Can your workover rigs be used for drilling operations?

A: Yes. XJ450, XJ550, XJ650, XJ750, XJ1000 and XJ1200 can perform drilling operations for medium and shallow wells when equipped with a rotary table, swivel and drilling tools. The XJ650 can serve as a 2‑in‑1 rig to perform both workover and drilling operation.

Q6: What is the lead time for an XJ series workover rig?

A: Standard lead times from order confirmation:

XJ250–XJ350 (standard configuration): 4–5 months
XJ450–XJ550 (standard configuration): 5–6 months
XJ650–XJ1200 (standard configuration): 6–8 months
Custom builds (arctic, desert, drilling package): 8–10 months

Expedited delivery may be available – contact our sales team.

Q7: Can your workover rigs operate in extreme cold (-45 °C) or extreme heat (55 °C+)?

A: Yes. We offer specialised packages for extreme environments:

Arctic package (-45 °C) – low‑temperature materials enable operation in temperatures as low as minus 45 degrees, with good cold and wind resistance. Three (3) ZJ40 truck‑mounted cold‑weather drilling rigs have been delivered to Orenburg Drilling Company in Russia, specially designed for arctic areas.
Desert package (55 °C+) – oversized cooling systems, sand‑sealed electrical enclosures, dust filtration, corrosion‑resistant coatings.

Q8: What is the warranty on a workover rig?

A: 12 months after commissioning or 18 months after shipment – whichever occurs first. The warranty covers manufacturing defects on all components (carrier, engine, transmission, drawworks, mast, hydraulic system). Wear parts are not covered but are available as spares. Extended warranty (up to 5 years) is available for an additional fee.

Q9: Do you provide operator training for workover rigs?

A: Yes. For every rig purchase, we include 1–2 weeks of on‑site training during commissioning, covering rig operation, maintenance, safety protocols, mast raising, and emergency procedures. Digital manuals, video tutorials and remote support are also provided.

Q10: How do I get a complete workover specification data sheet for a specific XJ model?

A: Contact our technical sales team with: