Vertical drilling equipment

Technical Specifications – Vertical Drilling Rigs

Our ZJ-series vertical rigs cover the full spectrum. All specifications based on SJ Petro product catalog and industry API standards.

ZJ-Series Vertical Drilling Rigs – Complete Lineup

Parameter	ZJ30	ZJ40	ZJ50	ZJ70	ZJ90
Nominal Depth (4.5″ DP)	3,000m (9,840 ft)	4,000m (13,120 ft)	5,000m (16,400 ft)	7,000m (22,970 ft)	9,000m (29,530 ft)
Max Hook Load	1,700 kN / 380,000 lbs	2,250 kN / 500,000 lbs	3,150 kN / 700,000 lbs	4,500 kN / 1,000,000 lbs	6,750 kN / 1,500,000 lbs
Drawworks Power	600 HP (800 HP optional)	800 HP (1,100 HP optional)	1,100 HP (1,340 HP optional)	2,000 HP (2,680 HP optional)	3,000 HP (4,300 HP optional)
Mast Type	K-type / 33–41m	K-type / 41–43m	K-type / 43–45.5m	K-type / 45.5–48m	K-type / 48–52m
Substructure	Skid or modular	Skid or modular	Skid or modular	Skid or modular	Skid or modular
Rotary Drive	Table or Top Drive	Table or Top Drive	Table or Top Drive	Table or Top Drive	Table or Top Drive
Mud Pumps	2 × F-800 (or equivalent)	2 × F-1000	2 × F-1300/1600	2–3 × F-1600	3 × F-1600
Mast Material	High-strength low-alloy steel – API 4F certified
Low-Temp Option	Available – materials rated to -45℃, specialized low-temperature welding process
API Compliance	API 4F, 7K, 8C	API 4F, 7K, 8C	API 4F, 7K, 8C	API 4F, 7K, 8C	API 4F, 7K, 8C

Key Drilling Parameters by Application

Application	Recommended Rig	Hook Load Needed	Mud Pump Capacity
Water well (100–500m)	ZJ30 light config	500–1,000 kN	Single 500–800 HP pump
Water well (500–1,500m)	ZJ30–ZJ40	1,000–1,700 kN	2 × F-800
Shallow oil/gas (1,000–2,500m)	ZJ30–ZJ40	1,000–2,000 kN	2 × F-800/1000
Medium-depth oil (2,500–4,000m)	ZJ40–ZJ50	2,000–3,000 kN	2 × F-1000/1300
Deep oil/gas (4,000–6,000m)	ZJ50–ZJ70	3,000–4,000 kN	2–3 × F-1300/1600
Ultra-deep (6,000–9,000m)	ZJ70–ZJ90	4,000–6,750 kN	3 × F-1600
Geothermal (500–4,000m)	ZJ30–ZJ50	1,000–3,000 kN	2 × F-800/1300
Mineral exploration (300–1,500m)	ZJ30	500–1,500 kN	1–2 × F-500/800

Product Types – Find Your Vertical Rig

1. ZJ30 Vertical Drilling Rig (3,000m / 380,000 lbs)

Best for: Water wells, shallow oil & gas, mineral exploration, geothermal

Why this rig:

• 600–800 HP drawworks – enough for most shallow-to-medium vertical programs

• 380,000 lbs hook load – handles 3,000m with 4.5″ drill pipe

• K-type mast 33–41m height – standard vertical configuration

• Available with rotary table (budget-friendly) or small top drive

• Mounting options: skid, trailer, or truck

• Light enough for fast moves – especially on trailer configuration

2. ZJ40 Vertical Drilling Rig (4,000m / 500,000 lbs)

Best for: Medium-depth oil & gas, deeper water wells, geothermal

Why this rig:

• 800–1,100 HP drawworks – handles deeper formations

• 500,000 lbs hook load – 4,000m capacity with 4.5″ pipe

• K-type mast 41–43m height

• Rotary table or top drive – your choice

• Modular design – fast installation between wells

3. ZJ50 Vertical Drilling Rig (5,000m / 700,000 lbs)

Best for: Deep oil & gas, exploration wells, high-pressure formations

Why this rig:

• 1,100–1,340 HP drawworks – serious torque for deep drilling

• 700,000 lbs hook load – 5,000m depth capacity

• K-type mast 43–45.5m height

• Two F-1300/1600 mud pumps – high circulation capacity

• Recommended for programs where hole cleaning is critical

4. ZJ70 Vertical Drilling Rig (7,000m / 1,000,000 lbs)

Best for: Ultra-deep oil & gas, high-pressure/high-temperature (HPHT) wells

Why this rig:

• 2,000–2,680 HP drawworks

• 1,000,000 lbs hook load – handles heavy casing strings

• K-type mast 45.5–48m height

• 2–3 mud pumps (F-1600 class) – massive circulation capacity

• Heavy-duty rotary table or top drive

5. ZJ90 Vertical Drilling Rig (9,000m / 1,500,000 lbs)

Best for: Super-deep exploration, specialty high-pressure wells

Why this rig:

• 3,000–4,300 HP drawworks – the biggest in our lineup

• 1,500,000 lbs hook load – 9,000m with heavy casing

• K-type mast 48–52m height

• 3 × F-1600 mud pumps

• Built for the world's deepest conventional wells

Special Configurations – Ask Us About:

• Low-temperature Arctic vertical drilling rigs – all materials rated to -45℃, low-temperature welding processes, heated enclosures, winterized hydraulic systems

• Desert vertical drilling rigs – sand-sealed components, oversized cooling, dust protection

• Helicopter-portable rigs – modules under 5 tonnes for mountain or jungle access

• Electric drive only (no diesel) – for emissions-controlled or noise-sensitive locations

Where Vertical Drilling Equipment Is Used

Our vertical rigs are the workhorses of straightforward drilling operations worldwide:

• Oil & gas field development – vertical wells remain the most common well configuration because they're relatively cheap to drill compared to directional or horizontal alternatives

• Conventional reservoir access – operators use vertical wells to reach oil and natural gas reserves directly below a drilling site

• Water well drilling – municipal water supply, agricultural irrigation, industrial water

• Geothermal energy – production and injection wells for geothermal power plants

• Mineral exploration – core drilling for mining operations

• Scientific boreholes – research and geological survey projects

• Methane drainage – coalbed methane (CBM) degasification wells

• Mine dewatering – vertical boreholes targeting hydraulically productive zones within an orebody

Why Choose SJ Petro for Vertical Drilling Equipment?

Because vertical drilling is our core business – not a side product line.

Your Concern	SJ Petro's Answer
"We're a small independent. We don't need the most expensive rig on the market.”	We'll quote you the right rig for your depth, not upsell you unnecessary capacity.
"Our crew has never run a top drive. Should we stick with rotary table?”	Probably yes – for many vertical programs, rotary table is perfectly adequate and your crew already knows how to run it.
"We move the rig between wells often.”	Our modular and trailer-mounted vertical rigs rig up in days, not weeks.
"We need documentation for financing or government requirements.”	Full API certification (4F, 7K, 8C). Third-party inspection available.
"We drill in extreme temperatures.”	Low-temperature Arctic package available – materials rated to -45℃, specialized welding process, heated enclosures

More reasons why vertical operators trust SJ Petro:

• Sinopec Group heritage – Founded 1941, over 80 years of oilfield equipment manufacturing experience

• API certified manufacturing – API 4F (mast/substructure), API 7K (drilling equipment), API 8C (hoisting equipment)

• National R&D center – Strategic cooperation with China University of Petroleum and Sinopec research institutes

• Global reference list – Drilling rigs, workover rigs, and cementing/fracturing equipment delivered to customers worldwide

• One-stop solution – We manufacture vertical drilling rigs, mud pumps, BOP stacks, downhole tools, and high-pressure fluid control products. Single purchase order, single point of contact

• Over 110 national technology patents – Including proprietary rig design and low-temperature material technologies

• Nearly 20 international certifications – API, ISO, HSE, GOST and others

Frequently Asked Questions (FAQ)

Q1: What exactly is vertical drilling equipment?

A: Vertical drilling equipment refers to the complete surface drilling rig system designed to drill wells that remain straight – that is, boreholes that go approximately straight down from surface to target formation, with minimal deviation. The equipment includes the mast (derrick), drawworks (hoisting system), rotary table or top drive (rotation system), mud pumps (circulation system), and substructure (foundation). Vertical wells are the most common well configuration globally.

Q2: Should I choose a rotary table or top drive for my vertical drilling rig?

A: Rotary table (traditional) – Lower initial cost, simpler operation with fewer components, highly reliable, and your crew likely already knows how to run it. Works great for most conventional vertical drilling. Best for: cost-sensitive projects, shallower wells, water wells, budget-limited programs.

Top drive (modern) – Rotates the drill string continuously while adding pipe (saves hours per day), better well control, safer rig floor. Best for: deeper wells, complex formations, programs where speed and safety justify the higher cost.

We offer both. We'll help you choose based on your well program – we won't push the more expensive option if you don't need it.

Q3: What depths can your vertical drilling rigs handle?

A: Our ZJ-series covers everything from shallow water wells to super-deep exploration:

Rig	Depth (4.5″ drill pipe)	Best for
ZJ30	Up to 3,000m	Water wells, shallow oil, geothermal
ZJ40	Up to 4,000m	Medium-depth oil & gas
ZJ50	Up to 5,000m	Deep oil & gas
ZJ70	Up to 7,000m	Ultra-deep HPHT wells
ZJ90	Up to 9,000m	Super-deep exploration

Let us know your target depth, casing program, and formation type – we'll recommend the right size.

Q4: What API certifications do your vertical drilling rigs carry?

A: Our vertical drilling equipment is manufactured to:

• API Spec 4F – Drilling and well servicing structures (mast, substructure)

• API Spec 7K – Drilling equipment (drawworks, rotary table, mud pumps)

• API Spec 8C – Hoisting equipment (blocks, hooks, elevators)

We also hold ISO 9001, ISO 14001, ISO 45001, and HSE certifications. Third-party verification (DNV, ABS, BV) available on request.

Q5: How long does it take to install a vertical drilling rig on location?

A: Installation time depends on the mounting configuration:

• Skid-mounted modules with crane access – 3–5 days for standard ZJ-series

• Trailer-mounted fast-install rig – 1–2 days (crane required for mast raising)

• Containerized rig with pinned connections – 1–2 days with appropriate lifting equipment

We'll provide a detailed rig-up plan before shipment – including required crane capacity, crew size, and estimated hours.

Q6: Can your vertical drilling rigs operate in extreme cold climates?

A: Yes. Our low-temperature Arctic package includes:

• Mast and substructure materials rated to -45℃ – low-alloy, high-strength, low-temperature impact-resistance material

• Specialized low-temperature welding process for all structural components

• Heated hydraulic systems and enclosures

• Low-temperature seals and elastomers

• Designed for Siberia, Canada, Alaska, and similar environments

Q7: Can I get a vertical drilling rig that's easy to move between wells?

A: Absolutely. We offer:

• Modular/fast-install configurations – factory pre-assembled modules with pinned connections, minimal field work between moves

• Trailer-mounted rigs – tows to location as a complete package

• Containerized rigs – fits standard shipping containers for international shipping

• Skid-mounted with hydraulic skidding systems – for cluster well pads where you move between closely spaced wellheads

Tell us how often you move and your road access – we'll configure accordingly.

Q8: Do you offer after-sales support and spare parts?

A: Yes. SJ Petro provides:

• 12-month warranty (commissioning) or 18 months (shipment) – whichever comes first

• Global spare parts inventory with DHL/FedEx shipping within 24 hours for critical components

• Remote video diagnostics and troubleshooting

• On-site technician deployment (available – lead time depends on location)

• Operator and maintenance training at your wellsite or our factory in Jingzhou

Q9: What kind of warranty do you offer on vertical drilling equipment?

A: 12 months after commissioning or 18 months after shipment (whichever comes first). Coverage includes manufacturing defects in materials and workmanship. Spare parts kits recommended – we'll provide a list of commonly replaced components.

Q10: How do your prices compare to North American or European vertical rig manufacturers?

A: We are typically 20–40% lower for comparable API-certified equipment. That's not because we cut corners – it's because we're a direct manufacturer with lower overhead, backed by Sinopec Group. Quality is API-certified and field-proven on rigs operating worldwide.