Drilling and completion services
Technical Specifications (Representative Models)
Onshore Mobile Workover Rigs — XJ Series
| Model | XJ250 | XJ350 | XJ450 | XJ550 | XJ650 | XJ1000 | XJ1200 |
|---|---|---|---|---|---|---|---|
| Workover Depth (27/8″ DP, m) | 2,000 | 3,200 | 4,500 | 5,800 | 7,000 | 8,000 | 9,000 |
| Nominal Hook Load (kN) | 400 | 600 | 800 | 1,000 | 1,200 | 1,500 | 1,800 |
| Max. Static Load (kN) | 675 | 900 | 1,125 | 1,350 | 1,470 | 1,800 | 2,250 |
| Drawworks Power (hp) | 250 | 350 | 450 | 550 | 650 | 750 | 1,000 |
| Mast Height (m) | 21 | 31.7 | 34 | 34 | 35 | 38 | 39.3 |
| Traveling System | 3×4 | 3×4 | 4×5 | 4×5 | 4×5 | 5×6 | 5×6 |
| Wireline Diameter (mm) | 22 | 26 | 26 | 26 | 29 | 29 | 32 |
| Carrier Drive | 6×6 | 10×8 | 10×8 | 10×8 | 12×8 | 14×8 | 14×10 |
Land Drilling Rigs — ZJ Series (Representative Selection)
| Model | Nominal Drilling Depth (m) | Max Hook Load (kN) | Drawworks Power (kW/hp) | Mast Type / Height (m) | Substructure Type |
|---|---|---|---|---|---|
| ZJ30 (SZJ170D) | 3,000 | 1,700 | 600 / 800 | K-type / 33–41 | Block-type / telescopic |
| ZJ40 (SZJ225D) | 4,000 | 2,250 | 800 / 1,100 | K-type / 43 | Rotary-raising / 7.5 |
| ZJ50 (SZJ315D) | 5,000 | 3,150 | 1,100 / 1,470 | K-type / 45.5 | Rotary-raising / 9 |
| ZJ70 (SZJ450D) | 7,000 | 4,500 | 1,470 / 2,000 | K-type / 48 | Rotary-raising / 10.5 |
Offshore Drilling Equipment — Fixed Platform & Jack-up Series
| Model | Max Hook Load (kN/lb) | Drawworks Power (kW/hp) | Platform Type |
|---|---|---|---|
| SJF180DB | 1,800 / 400,000 | 550 / 750 | Fixed platform |
| SJF225DB | 2,250 / 500,000 | 735 / 1,000 | Fixed platform |
| SJF315DB | 3,150 / 700,000 | 1,100 / 1,500 | Fixed platform |
| SJF450DB | 4,500 / 1,000,000 | 1,470 / 2,000 | Fixed platform |
| SJK450DB | 4,500 / 1,000,000 | 1,470 / 2,000 | Jack-up platform |
| SJK675DB | 6,750 / 1,500,000 | 2,200 / 3,000 | Jack-up platform |
| SJK900DB | 9,000 / 2,000,000 | 4,413 / 6,000 | Jack-up platform |
Offshore Workover Equipment — SHXJ Series
| Model | Max Hook Load (kN/lb) | Drawworks Power (kW/hp) | Application |
|---|---|---|---|
| SHXJ90 | 900 / 200,000 | 257–330 | Fixed platform workover |
| SHXJ112 | 1,125 / 250,000 | 280–400 | Fixed platform workover |
| SHXJ135 | 1,350 / 300,000 | 330–450 | Fixed platform workover |
| SHXJ158 | 1,575 / 350,000 | 400–500 | Fixed platform workover |
| SHXJ180 | 1,800 / 400,000 | 450–600 | Fixed platform workover |
| SHXJ225 | 2,250 / 550,000 | 550–735 | Fixed platform workover |
Application Areas
SJ’s drilling and completion equipment is engineered to perform across the full spectrum of oil and gas development scenarios:
| Application | Environment | Recommended Equipment |
|---|---|---|
| Conventional onshore oil & gas exploration | Plains, deserts, highlands, mountainous terrain | ZJ land drilling rigs (ZJ30–ZJ90); modular & trailer-mounted configurations |
| Well servicing and workover operations | Mature fields, brownfields | XJ mobile workover rigs (XJ250–XJ1200) with self-propelled chassis |
| Hydraulic fracturing & acid stimulation | Unconventional reservoirs (shale, tight oil, CBM) | SYLQ fracturing spreads, SGSQ blenders, SGHQ manifolds |
| Offshore platform drilling & workover | Fixed platforms, jack-up rigs, TLP | SJF fixed platform rigs, SJK jack-up packages, SHXJ workover units |
| HPHT well drilling & completion | Deep wells, high-pressure reservoirs | API 16C certified choke & kill manifolds; high-strength hoisting equipment |
| Geothermal & urban drilling | Urban environments, sensitive areas | Low-footprint, low-noise rigs with electric drives |
Our drilling and completion solutions are equally at home in the heat of the Kuwaiti desert, the freezing winters of Western Siberia, the high-altitude plateaus of western China, and the typhoon-prone waters of the South China Sea. This versatility is built on decades of field experience and continuous engineering refinement.
Why Choose SJ Petroleum Machinery for Your Drilling and Completion Needs?
1. Sinopec-Grade Quality Assurance
As a Sinopec Group subsidiary, we operate under the same quality management protocols that govern the world’s largest integrated energy company. Our API Q1, ISO 9001, and HSE certifications aren’t just wall plaques — they’re the operating framework of every workshop on our 180,000 m² facility.
2. Over 70 Years of Proven Track Record
From our founding in 1941 to the present day, SJ has delivered more drilling and workover rigs to more oilfields than any other Chinese manufacturer. We are consistently the #1 exporter of drilling, workover, cementing, and fracturing equipment from China, with a cumulative installation base measured in the thousands of units worldwide.
3. One-Stop, Integrated Solutions
Why manage five different suppliers for your drilling package, cementing unit, and fluid control system? SJ provides complete well drilling and completion solutions under one roof — from drawworks and mud pumps to top drives and choke manifolds — all designed, manufactured, and tested to API standards.
4. Custom Engineering & Tailored Configurations
No two wells are the same, and no two rigs should be either. SJ works closely with you — from conceptual design through to factory acceptance testing — to configure your equipment for local climate, well conditions, and operational preferences. Need a different mast height? A non-standard power train? An upgraded automation package? We do it all.
5. 24/7 Global After-Sales Support
We maintain regional service centers and parts warehouses across the Middle East, Central Asia, Southeast Asia, and South America to keep your drilling and completion equipment running. Our commitment includes on-site commissioning, operator training, preventive maintenance programs, and emergency field service — available when you need it, wherever you need it.
6. Third-Party Inspection & Transparent Partnership
Our equipment is open to inspection by any third party of your choosing — DNV, ABS, Lloyd’s, or any other accredited agency. We regularly welcome customer representatives to our factory for witness testing, and we provide full traceability documentation for every certified component.
Frequently Asked Questions (FAQ)
Q1: What certifications does SJ Petroleum Machinery hold for drilling and completion equipment?
SJ holds API Spec 4F, 6A, 7K, 8C, and 16C monogram licenses covering 15 core product categories. We are also ISO 9001 and HSE certified, with ABS works approval, CE marking, and CU-TR (GOST) certification for applicable markets. Our third-party accredited inspection lab (SJPETRO) provides independent testing and calibration services.
Q2: Do you offer customized drilling rigs for specific well conditions?
Absolutely. SJ specializes in custom engineering — whether you need a desert rig with enhanced cooling, an arctic package for -45°C operation, a helicopter-transportable rig for remote access, or a top-drive-integrated VFD rig for automated drilling. We tailor everything from mast height and drawworks power to control system configuration and automation level.
Q3: What is your typical lead time for a drilling rig or workover unit?
Standard lead times range from 6 to 10 months from order confirmation to factory acceptance testing (FAT), depending on complexity and customization level. We can expedite certain standard models from our semi-finished inventory. Contact our sales team for current delivery schedules.
Q4: Do you provide on-site commissioning and operator training?
Yes. Every rig we ship includes factory acceptance testing at our assembly yard, followed by on-site commissioning by our field service engineers. We also provide comprehensive operator and maintenance training — on-site or at our training facility in Jingzhou — to ensure your team is fully prepared.
Q5: What spare parts and after-sales support do you offer?
We maintain regional spare parts inventory in Dubai, Almaty, Houston, and Jakarta, with express delivery to most major oilfield locations within 48–72 hours. Our 24/7 remote support desk is staffed by experienced field engineers, and we offer preventive maintenance programs tailored to your operations.
Q6: Can I visit your factory and witness the testing of my equipment?
Yes — and we encourage it. We regularly host customers and third-party inspectors at our 50,000 m² assembly yard in Jingzhou for witness testing and FAT. We’re also happy to arrange visits to our manufacturing lines for a behind-the-scenes look at how we build drilling and completion equipment at scale.
Q7: How does SJ compare to other drilling equipment manufacturers from China?
As a Sinopec subsidiary with over 70 years of history, SJ offers the unique combination of state-owned enterprise quality controls, financial stability, and proven export track record — we are China’s #1 exporter of drilling, workover, cementing, and fracturing equipment. Our API-certified product range, in-house engineering depth (314 R&D personnel), and global after-sales network set us apart from smaller or less-established manufacturers.
