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Customized drilling rigs

Technical Specifications – Customizable Parameters (Full Range)

Parameter	Minimum	Maximum	Notes
Nominal depth (4‑1/2″ DP)	1,000 m	12,000 m	Any intermediate value
Hook load	500 kN	9,000 kN	Any intermediate value
Drawworks power	300 HP	6,000 HP	Any intermediate value
Drive type	Mechanical	AC VFD + regen	SCR, hybrid, grid also available
Mast type	Single pole	K‑type cantilever	Telescopic or sectional
Mast height	60 ft	170 ft	Any height
Substructure height	2 m	12 m	Any height
Number of transport modules	3 (containerized)	20 (heavy)	Dependent on capacity
Module weight limit	4,000 kg (heli)	55,000 kg (road)	Customer defines
Top drive capacity	150 t	900 t	Any rating
Top drive torque	20,000 Nm	100,000 Nm	Any rating
Mud pumps – quantity	1	3	Triplex or quintuplex
Mud pump – power each	500 HP	2,200 HP	Any rating
BOP pressure rating	5,000 psi	20,000 psi	API 16A
Automation level	0 (manual)	5 (autonomous)	Modular upgrade path
Operating temperature	-60°C	+55°C	Any range within extremes
Walking system	No	Yes	Hydraulic, integrated
API compliance	Yes	Yes	4F, 7K, 8C, Q1
Third‑party certs	Optional	ABS, DNV, BV, SGS, GOST	At customer request

Product Types – Customization Directions

Customization Focus	Typical Clients	Typical Custom Features
Depth‑optimized rig	Operators with narrow depth range	Hook load and drawworks power precisely matched to well plan; no over‑spec or under‑spec
Logistics‑constrained rig	Remote jungle, mountain, island operators	Module size/weight tailored to existing roads, bridges, cranes; heli‑portable option
Climate‑specific rig	Arctic, desert, offshore, tropical	Steel grade, seals, insulation, cooling, heating tailored to ambient extremes
Automation‑targeted rig	High‑activity pad drilling, labor‑constrained regions	Automation level matched to crew skill; remote monitoring from central office
Legacy‑compatible rig	Operators with existing equipment fleet	Custom interfaces to integrate customer's existing BOP, top drive, or mud pumps
Hybrid / low‑carbon rig	Operators with emissions targets	Dual‑fuel (diesel/gas), grid‑connected, battery‑assisted, or fully electric
Multi‑purpose rig	Workover + drilling + sidetracking	Quick‑change mast, dual‑capability drawworks, adaptable BOP handling

Applications – Custom Rig Success Stories

Region	Challenge	Custom Solution	Result
Amazon jungle, South America	No roads, only rivers and helicopters. Standard rig modules too heavy for air transport.	Custom heli‑portable rig with modules ≤ 4,000 kg, 1,500 m depth, containerized for barge transport.	First drilling operation in previously inaccessible block.
Western Siberia, Russia	-55°C winter temperatures, no field welding possible, GOST certification required.	Custom arctic rig with low‑temp steel, heated hydraulics, pin‑connections only (no welding), -60°C storage rating.	Year‑round drilling, no winter shutdown.
Middle East desert, Kuwait	55°C ambient, sandstorms, extreme logistics to move 9,000 m deep rigs rapidly between pads.	Custom desert rig with sand‑sealed enclosures, oversized cooling, walking system, 6,750 kN hook load.	24‑48 hour inter‑well move time, 6 rigs delivered ahead of schedule.
Offshore platform, Southeast Asia	Platform deck space limited, crane capacity restricted, need to drill through existing platform beams.	Custom compact rig with split‑substructure, containerized modules that fit through platform hatches, cantilever reach extended.	Added 8 new well slots without platform modification.
High altitude, Tibetan Plateau	4,500 m altitude, low oxygen, extreme UV, poor road access.	Custom high‑altitude rig with turbocharged engines, oxygen‑enriched control cabin, UV‑resistant coatings, lightweight modules.	Successful geothermal drilling at 4,200 m elevation.

Why Choose SJ Petro for Your Customized Drilling Rig?

1. We Have Been Doing Custom for Over 20 Years

SJ Petro (as part of Sinopec Group) has designed and manufactured customized drilling rigs for clients across six continents. We have built rigs for 1,000 m water wells and 12,000 m ultra‑deep gas wells. We have built rigs that operate at -60°C and rigs that operate at +55°C. We have built rigs that move by helicopter, by barge, by rail, and by road train. There is no requirement we haven’t encountered.

2. We Offer True Custom Engineering – Not Catalog "Options”

Many suppliers claim "customization” but offer a list of pre‑defined options (option A, B or C). We offer a blank sheet of paper. Our engineers start from your requirements, not our catalog. If you need a 4,750 m rig with a 2,100 HP drawworks, 8,500 psi mud pumps, and a mast that fits on a specific low‑boy trailer – we build that.

3. Full In‑House Engineering – No External Dependencies

All engineering – structural, mechanical, hydraulic, electrical, control software – is performed in‑house by SJ Petro engineers. This means no delays waiting for external consultants, no finger‑pointing between design and manufacturing, and full ownership of the design for future modifications.

4. Backed by Sinopec – The World's Largest Energy & Chemicals Company

SJ Petro is a wholly‑owned subsidiary of Sinopec Oilfield Equipment Corporation, part of the Fortune Global 500 Sinopec Group. This provides:

Financial stability – We honor our warranties and long‑term support commitments.
Global supply chain – Access to the world's largest industrial distribution network.
Operational data – Sinopec drills thousands of wells annually; we use that data to inform your custom design.

5. API Certified, Third‑Party Ready

All custom rigs are designed to API 4F, 7K, 8C, Q1 standards. We can also certify to GOST, CE, ABS, DNV, or any other regulatory framework. Full documentation packages for local permitting are provided.

6. One‑Stop Custom Solution

We don't just design the rig. We manufacture, assemble, test, transport, commission, and train. You work with one project manager from concept to first spud. No coordination between multiple vendors.

7. Lifecycle Support for Your Custom Rig

Even a custom rig needs parts and service. SJ Petro maintains engineering records for every custom rig we have ever built. We can manufacture replacement modules, upgrade systems, or provide remote diagnostics decades after delivery.

FAQ – Customized Drilling Rigs

Q1: How long does it take to design and build a customized drilling rig?

A: Typical timeline from contract signing to delivery:

Simple customizations (e.g., standard rig with climate package): 4‑6 months.
Medium complexity (custom depth/hook load, different mobility): 6‑9 months.
High complexity (novel configuration, full custom design): 9‑12 months.
Extreme complexity (prototype, new technology integration): 12‑18 months.

We provide a detailed project schedule at the proposal stage.

Q2: How much does a customized drilling rig cost compared to a standard rig?

A: A standard ZJ50 rig (5,000 m, 3,150 kN) might cost $10M‑12M. A customized rig with the same capacity but unique features (e.g., walking system, arctic package, MPD integration) typically costs 15‑30% more than the equivalent standard model. For highly novel designs, the premium may be higher. However, the custom rig pays for itself through:

Perfect fit to your well program (no over‑spec or under‑spec)
Faster drilling (optimized for your formation)
Lower operating cost (climate‑specific efficiency)
Longer asset life (properly matched to environment)

Q3: Can you integrate my existing equipment (e.g., my BOP, top drive, or mud pumps) into a new custom rig?

A: Yes. One of our most common custom requests is to design a new rig around customer‑owned major components. We will:

Survey your existing equipment (dimensions, interfaces, control protocols)
Design the rig substructure, mast, power system and controls to accommodate your components
Provide all necessary adapters and interface panels
Test the integrated system before shipment

Q4: Do you offer a warranty on custom rigs?

A: Yes. Standard warranty is 18 months from shipment or 12 months from commissioning (whichever first). This applies to both standard and custom components. Extended warranty available for critical systems.

Q5: How do I know my custom rig will actually work – will it be tested before delivery?

A: Every custom rig undergoes a full Factory Acceptance Test (FAT) before disassembly and packing. The FAT includes:

Full assembly of all modules (on our yard)
Connection of all utilities (hydraulic, electrical, pneumatic)
Mast and substructure raising (hydraulic test)
Drawworks and top drive operation (all speeds and torques)
Mud pump circulation test (with water)
BOP control function test
Automation system sequence test (simulated drilling cycles)

You are invited to witness the FAT. Third‑party inspectors are welcome.

Q6: What documentation do you provide for a custom rig?

A: Complete documentation package including:

General assembly drawings
Fabrication drawings for every module
Hydraulic and electrical schematics
PLC program backup (open format – no proprietary lock‑in)
Material certificates (EN 10204 3.1)
Weld maps and NDT reports
Pressure test certificates
Operation and maintenance manuals
Spare parts list with OEM cross‑references

Q7: Can I make changes to the design after fabrication has started?

A: Yes, but changes will affect cost and schedule. We use a formal change order process. Minor changes (e.g., adding a sensor) can be accommodated with minimal impact. Major changes (e.g., changing mast height, adding a walking system) will require re‑engineering and may delay delivery by several months.

Q8: How do I start the custom rig process?

A. Contact our custom rig engineering team with: