Low temp drilling rig
Technical Specifications – Low Temp Drilling Rig (‑35°C Rated)
| Parameter | ZJ30‑LT | ZJ40‑LT | ZJ50‑LT | ZJ70‑LT | ZJ90‑LT |
|---|---|---|---|---|---|
| Nominal depth (m) | 3,000 | 4,000 | 5,000 | 7,000 | 9,000 |
| Hook load (kN) | 1,700 | 2,250 | 3,150 | 4,500 | 6,750 |
| Drawworks power (HP) | 600 | 1,000 | 1,500 | 2,000 | 3,000 |
| Operating temperature | -35°C to +40°C | -35°C to +40°C | -35°C to +40°C | -35°C to +40°C | -35°C to +40°C |
| Storage temperature | -45°C to +45°C | -45°C to +45°C | -45°C to +45°C | -45°C to +45°C | -45°C to +45°C |
| Steel impact test temp | -35°C | -35°C | -35°C | -35°C | -35°C |
| Heated enclosures | Driller cabin, HPU, BOP | + engine room | + mud pump house | + workshop | + full camp |
| Hydraulic fluid pour point | -45°C | -45°C | -45°C | -45°C | -45°C |
| Engine block heater | Standard | Standard | Standard | Standard | Standard |
| Battery heater | Standard | Standard | Standard | Standard | Standard |
| Air dryer dew point | -40°C | -40°C | -40°C | -40°C | -40°C |
| Insulation type | Double panel, 50mm | Double panel, 75mm | Double panel, 75mm | Double panel, 100mm | Double panel, 100mm |
| Mobility | Skid / walking | Skid / walking / rail | Skid / walking | Walking / rail | Walking |
| API compliance | API 4F, 7K, 8C | API 4F, 7K, 8C | API 4F, 7K, 8C | API 4F, 7K, 8C | API 4F, 7K, 8C |
Product Types – Low Temp Drilling Rigs by Mobility
| Type | Depth Range | Heated Zones | Best For |
|---|---|---|---|
| Skid‑mounted LT | 3,000 – 5,000 m | Driller cabin, HPU, BOP | Single wells, mild winter areas |
| Walking LT | 4,000 – 7,000 m | + engine room, mud pumps | Cluster wells, frequent moves |
| Rail‑mounted LT | 4,000 – 5,000 m | Full walkway and BOP area | Arctic transition zones (e.g., Northern Kazakhstan) |
| Truck‑mounted LT | 2,000 – 3,000 m | Heated cab only, basic winterization | Remote workover, shallow drilling with limited budget |
| Containerized LT | 3,000 – 5,000 m | All modules individually heated | Fly‑in / heli‑portable operations in cold regions |
Applications – Where a Low Temp Drilling Rig Is the Right Choice
| Region / Use Case | Winter Low | Why Low Temp Rig (Not Full Arctic) |
|---|---|---|
| Northern Kazakhstan (Aktobe, Kyzylorda) | -30°C to -35°C | Standard rigs struggle; arctic rigs over‑spec’d and expensive. LT rig hits the sweet spot. |
| Western Siberia (southern part) | -35°C to -40°C | Full arctic may be required if persistent -45°C, but many fields see -35°C average. LT reduces cost. |
| North Dakota / Montana (Bakken) | -30°C to -35°C (occasional -40°C) | Most winter days are above -30°C; LT winterization sufficient. |
| Northeast China (Daqing, Liaohe) | -25°C to -35°C | LT rig is standard for local winter drilling campaigns. |
| Northern Europe (Poland, Germany) | -15°C to -25°C | LT rig with reduced heating (‑25°C rated) available. |
| Mongolia / Central Asia | -30°C to -40°C (short duration) | LT rig with enhanced battery heating works well. |
| Drilling in permafrost transition zones | -25°C to -35°C | LT rig with insulated mud returns and heated BOP stack. |
Why Choose SJ Petro for Your Low Temp Drilling Rig?
1. Proven in the "Working Cold” – Not Just Lab Tested
Our low temp drilling rigs have drilled thousands of winter wells in China's northern oilfields (Daqing, Karamay) and Kazakhstan, where -30°C to -35°C is routine. We’ve refined the winterization package based on direct field feedback: what breaks, what freezes, what mechanics hate fixing in the cold. The result is a practical, no‑nonsense design.
2. Cost‑Effective – Up to 30% Cheaper Than Full Arctic Rigs
By focusing winterization on critical components and using proven industrial cold‑rated materials (not exotic cryogenic alloys), our low temp rig typically costs 20-30% less than a full‑spec arctic rig. If you don't need -50°C capability, why pay for it? Our LT rig gives you exactly the temperature rating you need – no more, no less.
3. Simple Maintenance – Mechanics Don’t Need Arctic Training
Winterization adds complexity, but we keep it manageable. All heaters, thermostats, and heat‑trace circuits are off‑the‑shelf industrial components stocked by major distributors. Your rig mechanics can troubleshoot and replace parts without specialized training. We provide a cold‑weather maintenance manual with every rig.
4. Compatible with Our Standard Rig Modules
If you already own SJ Petro standard rigs, the low temp version uses identical mechanical modules – only the winterization add‑ons differ. This means your spare parts inventory and crew skills transfer directly. You can even upgrade a standard rig to LT spec with a retrofit kit (field‑installed heater packages, insulation panels, and cold‑rated hoses/seals).
5. Fast Delivery – Shorter Lead Times Than Arctic Rigs
Because low temp rigs use standard steel grades (with -35°C Charpy testing) and conventional components, fabrication time is typically 4‑6 months for rigs up to ZJ70 – much faster than polar rigs that require specialty materials and extended cold‑testing. This matters when you need to get drilling before the winter window closes.
6. Backed by Sinopec – With Local Support in Key Cold Regions
Sinopec has decades of winter drilling experience. Our service network in Kazakhstan and Russia can support your low temp rig locally. For North America, we work with regional partners.
7. Flexible Temperature Ratings
We offer three low‑temperature tiers:
| Tier | Operating Temp | Best For |
|---|---|---|
| LT‑25 | -25°C | Central Europe, Southern Canada |
| LT‑35 | -35°C | Kazakhstan, North Dakota, Northeast China |
| LT‑45 | -45°C | Northern Siberia, Arctic transition (if needed) |
You choose the tier. We build to match.
FAQ – Low Temp Drilling Rig
Q1: What is the difference between your "low temp” rig and a "cold resistant” or "arctic” rig?
A: Our low temp rig is rated for -35°C continuous operation. It uses standard low‑alloy steel with -35°C impact testing, targeted heating (critical enclosures only), and proven winterization components. An arctic/polar rig is rated for -45°C or lower, uses cryogenic steel, full insulation of all enclosures, redundant heating, and often steam heating systems. The low temp rig costs 20-30% less and is easier to maintain – ideal for most cold onshore regions.
Q2: Can I operate your low temp rig at -40°C for short periods?
A: Yes, with some precautions. The rig is rated for -35°C continuous. For short cold snaps down to -40°C (e.g., a few days), we recommend adding extra electric heaters, using low‑viscosity hydraulic fluid (ISO VG 22), and possibly adding windbreaks. Contact us for a cold‑snap procedure sheet. For sustained -40°C or lower, we recommend our arctic/cold‑resistant series (‑45°C rated).
Q3: Do you provide training for winter operation and cold‑weather maintenance?
A: Yes. Included with every rig is a 2‑day on‑site training course covering: cold‑start procedures, hydraulic system pre‑heating, inspection of heated enclosures, troubleshooting common freeze issues, and emergency responses to heater failures. We also provide a laminated quick‑reference card.
Q4: How much additional heating power does the low temp rig consume?
A: Typical installed heating power for a ZJ50‑LT is 40-60 kW, depending on the number of enclosures and outside temperature. In practice, average consumption is about 30-40 kW continuous when temperatures are at -35°C – equivalent to running a few extra small generators. This is roughly half the heating load of a full arctic rig.
Q5: Can your low temp rig be equipped with a walking system for pad drilling?
A: Yes. Our walking system is fully compatible with the low temp package. The hydraulic walking cylinders are enclosed and heated, and all hoses are heat‑traced. The walking system has operated successfully at -35°C.
Q6: What is the warranty on the winterization components?
A: 12 months on all heaters, thermostats, heat‑trace cables, and cold‑rated seals/hoses, in addition to the standard 18‑month rig warranty. Extended warranty available.
Q7: Can I retrofit my existing standard SJ Petro rig to low temp specification?
A: Yes, for most rigs within 5 years of age. The retrofit kit includes: insulation panels for cabins, engine block and battery heaters, heat‑traced hydraulic lines, cold‑rated seals and hoses, and a revised control panel for temperature monitoring. Field installation takes 10‑14 days. Contact us for a specific rig assessment.
Q8: What documentation do you provide for cold‑weather certification?
A: We provide: material certificates with -35°C Charpy impact results, weld procedure qualification records (WQRs), heater system design calculations, cold‑start test reports, and API conformance certificates. For Russia/CIS, we can provide GOST certification at additional cost.
