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Low-temperature Drilling Rig

Technical Specifications – Low‑Temperature Drilling Rigs

ZJ Series Low‑Temperature Drilling Rigs

Parameter	ZJ30‑LT	ZJ40‑LT	ZJ50‑LT	ZJ70‑LT	ZJ90‑LT
Nominal depth (m)	3,000	4,000	5,000	7,000	9,000
Max. hook load (kN / t)	1,800 / 180	2,500 / 250	3,200 / 320	4,500 / 450	6,750 / 675
Drawworks power (HP)	800	1,340	1,600	2,680	4,300
Mud pump power (total HP)	2 × 800	2 × 1,000	2 × 1,600	3 × 1,600	3 × 2,200
Power supply	2 × 1,000 kW	2 × 1,600 HP + 3 × 1,000 kW	3 × 1,600 HP + 3 × 1,200 kW	4 × 1,200 kW	3 × 2,200 HP + 5 × 1,200 kW
Operating 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
Storage temperature	-60°C to +45°C	-60°C to +45°C	-60°C to +45°C	-60°C to +45°C	-60°C to +45°C
Mobility type	Skid / rail / walking	Skid / rail / walking	Skid / slide‑rail / walking	Skid / slide‑rail	Skid / rail
Compliance	API 4F/7K/8C/Q1, SY/T 6958-2013, GOST	API 4F/7K/8C/Q1, SY/T 6958-2013, GOST	API 4F/7K/8C/Q1, SY/T 6958-2013, GOST	API 4F/7K/8C/Q1, SY/T 6958-2013, GOST	API 4F/7K/8C/Q1, SY/T 6958-2013, GOST

Common specifications across all models:

Low‑temperature steel certified for Charpy impact at -70°C
Heated and insulated enclosures for all critical areas
Low‑temperature hydraulic fluid (synthetic ISO VG 32) with thermostatic tank heaters
Cold‑start engine system with block heaters, heated batteries, dual start circuits
Digital control system with automatic heating and cold‑weather diagnostics
Modular transport – pin‑connected components, designed for no field welding in extreme cold

*Source: Polar rig technical data confirms rated operating temperature -45°C to +45°C, storage temperature -60°C to +45°C. ZJ specifications based on SY/T 6958-2013 compliant design.*

Field Validation: Delivered to Russia's Largest Oil Company

Low‑temperature drilling rigs are not theoretical—they have been delivered, commissioned and operated successfully in the world’s most demanding cold‑weather environment.

SJ Petro (as part of Sinopec Group) has successfully delivered ZJ40DB low‑temperature drilling rigs to Rosneft, Russia's largest state‑owned oil company. These rigs are specifically designed for drilling operations in Russian low‑temperature regions at 4,000 m depth.

Key specifications of the delivered Rosneft rigs:

Hook load: 225 t (2,250 kN) with a drilling depth of 4,000 m
Low‑temperature materials and heat preservation processes enable normal operation from +45°C down to -45°C and reliable storage down to -60°C
GOST certified to meet Russian industrial safety regulations
Full compliance with ROSNEFT technical standards and Russian industrial safety requirements

This project marked an important milestone—SJ Petro became the first Chinese manufacturer awarded a large‑scale low‑temperature drilling rig contract by Rosneft. The successful delivery and commissioning established SJ Petro as a leading low‑temperature drilling rig supplier in the Russian market.

Beyond drilling rigs, SJ Petro has also exported 2300‑type fracturing skids to Russia, employing a power‑pump split design adaptable to low‑temperature operations—further demonstrating our low‑temperature equipment engineering capabilities.

Product Types – Low‑Temperature Drilling Rig Configurations

Type	Depth	Mobility	Key Features	Best For
ZJ30‑LT	3,000 m	Skid / truck	Low‑temp steel, basic heating package	Shallow arctic wells, workover
ZJ40‑LT	4,000 m	Skid / rail	Proven Rosneft configuration, GOST certified	Standard arctic development wells
ZJ50‑LT	5,000 m	Skid / slide‑rail	Slide‑rail double‑track layout, insulation shed moves with rig	Deep arctic gas, cluster pad operations
ZJ70‑LT	7,000 m	Skid / slide‑rail	High‑capacity arctic drilling	Deep HPHT arctic exploration
ZJ90‑LT	9,000 m	Skid / rail	Ultra‑deep arctic frontier	Extreme depth arctic gas
Pawl Slide‑Rail Polar Rig	4,000‑7,000 m	Ratchet slide double‑track	X‑Y directional movement, insulation shed modular integrated design, hydraulic cylinder mast erection	Yamal region cluster well drilling
Train‑Type Low‑Temperature Rig	3,000‑5,000 m	Rail‑mounted (hydraulic push)	Low‑temp resistant high‑strength wheels and rails, all components on heavy rail, insulation sheds movable with rig	Extreme cluster density, high‑intensity pad drilling

All configurations include:

Full low‑temperature material specification for all primary structures
Insulated and heated enclosures for driller's cabin, generator rooms, HPU, BOP and VFD cabinets
Heated hydraulic systems with low‑pour synthetic fluid
Cold‑start engine systems with block heaters and heated batteries
GOST documentation packages for Russian regulatory approval
API 4F, 7K, 8C, Q1 compliance for global acceptance

Why Choose SJ Petro for Your Low‑Temperature Drilling Rig?

1. SY/T 6958-2013 Compliance – Our Engineers Drafted the Standard

SJ Petro (as part of Sinopec Group) is one of the official drafting units of China's SY/T 6958-2013 low‑temperature drilling rig standard. This means our engineering team literally helped write the technical requirements that govern the industry. When you specify a low‑temperature drilling rig from SJ Petro, you are buying equipment built to the very standard our own engineers authored.

2. Certified to Meet GOST 12.2.141-99 & ПБ 08-624-03

For Russian and CIS markets, SJ Petro's low‑temperature drilling rigs are fully certified to meet GOST 12.2.141-99 and Russian petroleum industry safety regulations ПБ 08-624-03. We provide complete documentation packages for local certification, including material certificates with low‑temperature impact test results, weld procedure qualification records, heating system design calculations, and cold‑start test reports.

3. National‑Level Low‑Temperature Impact Laboratory – Testing at -70°C

We established a national-level low-temperature impact laboratory specifically to test materials for high‑altitude, low‑temperature operating requirements. This facility allows us to validate every material specification before it goes into the rig—ensuring that our -45°C operational rating is backed by verified empirical data, not theoretical calculations.

4. Field‑Proven with Rosneft – Largest Russian Oil Company

SJ Petro (as part of Sinopec Group) has successfully delivered multiple ZJ40DB low‑temperature rigs to Rosneft, Russia's largest oil company. These rigs are actively drilling in Western Siberia, with proven performance at -45°C and certified for storage at -60°C. This is not a prototype—this is field‑validated technology operating in the world's harshest winter drilling environment.

5. Designed for Arctic Mobility – Fast Installation and Inter‑Well Movement

Our low‑temperature rigs are engineered for the unique mobility challenges of arctic drilling:

Ratchet slide double‑track layout enables X‑Y directional movement, accelerating drilling efficiency and reducing operating costs for line wells
Insulation shed modular integrated design moves with the rig—no disassembly between wells, no re‑installation delays
Train‑type rail configuration with low‑temperature resistant high‑strength wheels and rails, using hydraulic cylinder push for cluster well operations

The short arctic drilling window (typically 3‑4 months per year) demands maximum efficiency. Our mobility systems ensure your rig spends less time moving and more time drilling.

6. API Certified – Accepted by Regulators Worldwide

All low‑temperature drilling rigs are designed and manufactured to API 4F (masts and substructures), API 7K (drawworks), API 8C (top drives) and API Q1 (quality management). Full documentation—material certificates, weld maps, NDT reports, pressure test records—is provided. Third‑party inspection (ABS, DNV, BV, SGS) is welcome.

7. Backed by Sinopec – Financial Strength and Operational Expertise

SJ Petro is a wholly‑owned subsidiary of Sinopec Oilfield Equipment Corporation, part of the Fortune Global 500 Sinopec Group. Sinopec's low‑temperature drilling operations across China's northernmost oilfields provide real‑world operational data that continuously refines our rig designs. You are not buying a theoretical cold‑weather design—you are buying equipment proven by one of the world's largest energy companies.

8. Global Service and Training

24/7 remote diagnostics – Our engineers can log into the control system (with your permission) to troubleshoot low‑temperature systems
Regional parts hubs – Dubai, Houston, Singapore stock low‑temp specific components
On‑site commissioning and training – Included with every rig; we train your crew on cold‑weather assembly, pre‑heat procedures, and emergency cold‑start protocols
Low‑temperature operation manual – Comprehensive guide covering winterization procedures, daily inspections, cold‑start sequences, and freeze emergency response

FAQ – Low‑Temperature Drilling Rig

Q1: What is a low‑temperature drilling rig?

A. A low‑temperature drilling rig is a fully winterized drilling unit engineered for sustained operation in extreme cold, typically rated for -45°C continuous and -60°C storage. It differs from a standard rig in fundamental materials (low‑temperature rated steel, seals, hoses, lubricants), integrated heating and insulation systems, and cold‑start engine capabilities. SJ Petro's low‑temperature rigs comply with SY/T 6958-2013, GOST 12.2.141-99, and API standards.

Q2: What is the difference between a low‑temperature rig and a standard rig with a "winterization package”?

A. A standard rig with a bolt‑on winterization package typically remains built with conventional steel that becomes brittle at -30°C, standard seals that leak, and standard hydraulic fluid that gels. Our low‑temperature rigs are engineered from the ground up with low‑temperature materials for every component—steel, seals, hoses, lubricants, electrical cables—and are tested at -70°C in our national‑level low‑temperature impact laboratory before shipment.

Q3: What standards do your low‑temperature drilling rigs comply with?

A. Our rigs comply with:

SY/T 6958-2013 – China's national low‑temperature drilling rig industry standard (we are an official drafting unit)
GOST 12.2.141-99 – Russian occupational safety standard for surface drilling equipment
ПБ 08-624-03 – Russian petroleum industry safety regulations
API 4F, 7K, 8C, Q1 – International drilling equipment standards

Q4: How deep can a low‑temperature drilling rig drill?

A. Our low‑temperature rigs cover the full depth spectrum: ZJ30‑LT (3,000 m), ZJ40‑LT (4,000 m), ZJ50‑LT (5,000 m), ZJ70‑LT (7,000 m), and ZJ90‑LT (9,000 m). For depths beyond 7,000 m in arctic regions, the ZJ70‑LT and ZJ90‑LT are recommended.

Q5: Can you certify the rig for operation in Russia?

A. Yes. SJ Petro has successfully delivered low‑temperature rigs to Rosneft, Russia's largest oil company, with full GOST 12.2.141-99 certification. We provide complete documentation packages for local regulatory approval, including material certificates, weld records, heating system design calculations, and cold‑start test reports.

Q6: What is the typical lead time for a low‑temperature drilling rig?

Model	Typical Lead Time
ZJ30‑LT / ZJ40‑LT	6‑8 months
ZJ50‑LT / ZJ70‑LT	8‑10 months
ZJ90‑LT	10‑12 months
Slide‑rail / train‑type configurations	Add 1‑2 months

Lead times include low‑temperature steel procurement, cold‑qualified welding, insulation system fabrication, and full cold‑test verification. Expedited delivery may be available for certain configurations.

Q7: How do you verify the rig operates at -45°C?

A. Every low‑temperature drilling rig undergoes full cold‑climate factory testing before shipment. Critical subsystems are validated in our national‑level low‑temperature impact laboratory at -70°C, and complete rig cold‑weather function tests are conducted using climate chambers or outdoor winter conditions. Full cold‑start test reports are provided with each rig.

Q8: Can a low‑temperature rig be used for cluster well pad drilling?

A. Yes. Our low‑temperature rigs are available with slide‑rail double‑track layouts and train‑type rail configurations specifically designed for cluster well operations in arctic regions. The insulation shed is modular and integrated, moving with the rig. The rig can walk or slide between wellheads without dismantling the mast or insulation enclosures.

Q9: What training do you provide for low‑temperature rig operation?

A. Every low‑temperature rig purchase includes 3 weeks of on‑site training covering: