Series drilling rig specifications
Complete Series Drilling Rig Specifications (Table)
The table below lists nominal parameters. Actual values may vary slightly depending on final configuration. Custom depths and hook loads are available – consult our engineers for exact ratings.
| Model | Nominal Depth (m) * | Hook Load (kN) | Drawworks Power (HP) | Drive Types Available | Mast Height (ft) | Rotary Table Opening (in) | Ideal Well Type |
|---|---|---|---|---|---|---|---|
| ZJ30 | 3,000 | 1,700 | 600 | Mech / VFD | 118 | 20.5 | Shallow development, workover |
| ZJ40 | 4,000 | 2,250 | 1,000 | Mech / SCR / VFD | 130 | 27.5 | Medium depth conventional |
| ZJ50 | 5,000 | 3,150 | 1,500 | SCR / VFD | 140 | 37.5 | Deep well, high pressure |
| ZJ70 | 7,000 | 4,500 | 2,000 | SCR / VFD | 150 | 37.5 | Ultra-deep, shale gas, complex |
| ZJ90 | 9,000 | 6,750 | 3,000 | VFD | 160 | 49.5 | Deep exploration, HPHT |
| ZJ120 | 12,000 | 9,000 | 4,000+ | VFD | 170+ | 60.5 | Ultra-deep (10,000m+), frontier |
Additional shared parameters:
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Drawworks brake type: Hydraulic disc brake + auxiliary brake (optional eddy current or electromagnetic)
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Mud pump compatibility: 2 x F-1300 to 3 x F-2200 depending on model
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Power source: Caterpillar / Cummins / MTU diesel engines or grid electric
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Control system: Manual (lever) up to fully automated (driller’s chair with touchscreen & data recording)
Application Areas by Series Model
| Series Model | Best Suited For | Typical Region / Environment | Special Configuration Notes |
|---|---|---|---|
| ZJ30 – ZJ40 | Workover, shallow oil, coalbed methane | Onshore flat terrain, remote jungles | Truck-mounted or trailer version available |
| ZJ50 – ZJ70 | Conventional development wells, shale gas pads | Middle East deserts, US shale, Russia plains | Walking system option for pad drilling |
| ZJ70 – ZJ90 | Deep exploration, HPHT gas wells | Tarim basin (China), Gulf of Mexico deep shelf | High-pressure mud system, 10,000 psi BOP |
| ZJ90 – ZJ120 | Ultra-deep frontier wells (10,000m+) | Sichuan deep gas, offshore ultra-deep | Dual drawworks / extra heavy mast |
Product Type Breakdown (Beyond the ZJ Numbers)
Our series drilling rigs are further classified by mobility and drive type:
| Category | Sub-Type | Depth Range | Key Feature |
|---|---|---|---|
| By mobility | Conventional modular | All ZJ models | Truck or trailer transport, 7-14 modules |
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Desert fast-moving | ZJ30 – ZJ70 | 48-hour rig move, fewer modules (5-9) |
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Walking pad rig | ZJ50 – ZJ90 | Hydraulic walking between wellheads |
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Truck-mounted | ZJ20 – ZJ40 | Self-propelled, single carrier |
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Offshore skid rig | ZJ50 – ZJ90 | Skid beams, motion comp. option |
| By drive | Mechanical (Mech) | ZJ30 – ZJ50 | Lowest upfront cost, fuel-efficient |
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SCR diesel-electric | ZJ40 – ZJ70 | Field proven, good for remote areas |
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AC-VFD electric | ZJ50 – ZJ120 | Best for automation & pad drilling |
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Grid electric | All ZJ models | Lowest operating cost near power lines |
Why Choose SJ Petro for Your Series Drilling Rig Specifications?
1. We Don’t Guess – We Engineer from Field Data
Our ZJ series parameters are not theoretical. They come from drilling more than 2,000 wells in Sinopec’s own fields – including the 8,400m Tarim deep well and the Fuling shale gas pad (world’s largest outside North America). We know exactly what works at each depth range.
2. Full Transparency on Rating Curves
Many manufacturers give one optimistic "maximum depth” number. We provide rated depth vs. hook load de-rating curves – so you know exactly what the rig can do at 3,000m, 4,500m, or 6,000m. Ask for our technical data pack.
3. Interchangeable Parts Across the Series
Because we design the ZJ series with commonality, many components (drawworks brake pads, crown block sheaves, mud pump valves) are identical between neighboring models. This reduces your spare parts holding cost by up to 40%.
4. One-Stop Configuration with No "Surprise Upgrades”
When you request a ZJ70 quote, we include: mast & substructure, drawworks, rotary table, BOP handling tools, driller’s console, and mud pump connections. You don’t discover later that "the top drive adapter costs extra” – we list all options upfront.
5. Site-Specific Customization at Factory Price
We adjust mast height for your crane availability, modify module weight for your road limits, and tune the VFD logic for your local grid frequency. All without blowing the budget.
6. Global Service & Spares from a Sinopec Subsidiary
24/7 remote support. Spare parts hubs in Dubai, Houston, Singapore. On-site commissioning included. We also provide rig upgrade kits (e.g., adding a walking system to an existing ZJ70).
FAQ – Series Drilling Rig Specifications
Q1: How do I select between ZJ50 and ZJ70 for a 5,500m well?
A: At 5,500m, a ZJ50 is borderline – you’d need to reduce hook load or use lighter drill pipe. We recommend ZJ70 for comfortable reserve capacity (30% overload margin) and ability to run heavy casing. Send us your well plan; we’ll run a hook load simulation.
Q2: Can I upgrade a ZJ40 mechanical rig to VFD later?
A: Yes. We offer "VFD retrofit kits” that replace the mechanical gearbox with an AC motor and drive cabinet. Typically 80% of the existing drawworks structure is reused. Ask for our upgrade brochure.
Q3: What is the typical transport module count for a ZJ70 desert fast-moving rig?
A: 9 modules – substructure (2), mast (2), drawworks & engine (1), pump modules (2), BOP handling (1), auxiliary (1). Max module weight: 42 metric tons. Complete rig move time: 48 hours with 6 trucks.
Q4: Do your specifications include offshore versions? How do they differ?
A: Yes. Offshore variants carry "OS” suffix (e.g., ZJ70OS). Changes: marine-grade paint (Norsok M-501), stainless steel fasteners, explosion-proof electrics (ATEX/IECEx), skid beams for platform slot movement, and optional heave compensation for semi-subs.
Q5: What documentation do you provide for each series rig?
A: Full O&M manuals in English/Russian/Arabic, API conformance certificates, material test reports (EN 10204 3.1/3.2), dimensional drawings, load test reports, and CE declaration (if required).
Q6: Can you supply a complete spread including BOP, choke manifold, and solids control?
A: Absolutely. We either manufacture (solids control, BOP handling) or source from approved partners (Cameron, NOV, Schlumberger) as a single package – all pre-tested together.
Q7: How do I compare your ZJ50 specs to a competitor’s 1500 HP rig?
A: Send us their spec sheet. We’ll provide an unbiased comparison of hook load curves, mast rating at wind load, and transport module weights – not just marketing numbers.
Q8: What is the lead time for a custom ZJ90 with walking system?
A: 180–210 days from order. Standard ZJ70 without walking: 120 days. We offer accelerated production (extra shift) for 20% premium – minimum 90 days.
