Offshore engineering equipment
Technical Specifications – Core Offshore Engineering Equipment
As a full‑line offshore engineering equipment manufacturer, we supply the following major systems. All specifications are modular and customizable per project.
Platform Drilling Module (5,000 m depth capacity)
| Parameter | Specification |
|---|---|
| Nominal drilling depth | 5,000 m – 7,000 m (16,400 – 23,000 ft) |
| Hook load rating | 3,150 kN – 4,500 kN |
| Mast type | Cantilever or vertical, fully enclosed |
| Mast height (above drill floor) | 45 m – 49 m |
| Substructure height | 7.5 m – 10.5 m (accommodates BOP stack) |
| Top drive rating | 500 t or 350 t (AC VFD) |
| Drawworks power | 1,100 HP – 2,200 HP (AC or DC) |
| Mud pump | 2 × 1,600 HP triplex or 2 × 2,200 HP |
| Deck load capacity (module) | Up to 15 t/m² |
| Classification | ABS, DNV, BV, or CCS |
| Suitable platforms | Fixed, jackup, FPSO topsides |
Offshore Marine Crane (API 2C)
| Parameter | SK‑50 | SK‑100 | SK‑200 |
|---|---|---|---|
| Max. lifting capacity | 50 t @ 10 m | 100 t @ 12 m | 200 t @ 15 m |
| Boom length | 25 m – 35 m | 30 m – 45 m | 40 m – 60 m |
| Hoist speed (main, variable) | 0–10 m/min | 0–8 m/min | 0–6 m/min |
| Slewing speed | 0–1.2 rpm | 0–1.0 rpm | 0–0.8 rpm |
| Power pack | 160 kW diesel or electric | 250 kW | 400 kW |
| Motion compensation | Optional (active heave) | Optional | Standard |
| Dead ship lifting | Available | Available | Available |
Integrated Pipe Handling System (for jackups & platforms)
| Component | Specification |
|---|---|
| Pipe rack capacity | 2,000 m of 5‑1/2" drill pipe |
| Catwalk machine | 15 m length, 10 t lift capacity |
| Iron roughneck | 50,000 ft·lbs torque |
| Elevators (single & dual) | 350 t – 500 t |
| Slips / spinning wrenches | Pneumatic, remote controlled |
| Control system | Centralized cabin with redundant PLC |
Subsea Tooling & Lowering System
| Parameter | Value |
|---|---|
| Heave compensation stroke | 2 m – 4 m (passive or active) |
| Subsea load capacity | 25 t – 150 t |
| Water depth rating | 500 m – 3,000 m |
| Control | Umbilical or acoustic backup |
| Compatible with | Work class ROV or dedicated launch & recovery |
Note: All offshore engineering equipment can be custom‑engineered for specific vessel or platform constraints. Non‑standard materials (duplex stainless, low‑temperature steel, etc.) and special class notations are available on request.
Product Types – Complete Offshore Engineering Portfolio
We are not just an offshore engineering equipment manufacturer – we are a one‑stop provider for marine construction and drilling support:
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Platform Drilling & Workover Modules – Enclosed masts, substructures, top drives, drawworks, and complete power & control systems. Built to fit existing platform interfaces.
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Offshore Cranes & Hoisting Equipment – Knuckle boom cranes, lattice boom cranes, gantry cranes, and winch packages (anchor handling, tow winches). API 2C compliant.
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Pipe Handling & Lay Systems – Catwalk machines, pipe rackers, horizontal lay systems for rigid pipe, and tensioner units for flexibles.
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BOP Handling & Wellbay Systems – Trolley gantries, hydraulic power units, BOP test stumps, and wellhead tools.
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Subsea Lowering & Lifting Systems – Heave compensated winches, launch & recovery systems (LARS), subsea tool frames, and guide wire systems.
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Mud Circulation & Solids Control (Offshore) – Skid‑mounted mud pumps, high‑G shale shakers, centrifuges, and zero‑discharge cuttings handling.
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Offshore Environmental Equipment – DWB pneumatic cuttings conveyors, produced water treatment, and vapor recovery units.
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Custom Fabrications – Process modules, pipe racks, living quarters supports, and helideck structures to DNV‑GL / CAP437.
Applications – Where Our Offshore Engineering Equipment Works
Our offshore engineering equipment is engineered for the full spectrum of marine oil & gas projects:
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Fixed jacket platforms – Southeast Asia, South China Sea, Middle East Gulf. Complete drilling modules and pipe handling systems.
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Jackup drilling rigs – Shallow to medium water depths. Compact cantilever modules and integrated BOP handling.
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Semi‑submersibles & drillships – Deepwater units requiring heave‑compensated handling and high‑pressure mud systems.
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FPSO topsides – Well service packages, process modules, and crane systems with reduced weight and footprint.
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Subsea construction & installation vessels – LARS units, pipelay tensioners, and deck cranes for reel‑lay or J‑lay operations.
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Offshore decommissioning – Cut‑and‑lift tooling, modular cranes, and debris handling systems.
Why Choose SJ Petro as Your Offshore Engineering Equipment Manufacturer?
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Sinopec‑backed engineering foundation – Direct subsidiary of China’s largest oilfield equipment group. We have the financial strength and technical depth to support long‑term offshore projects.
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Proven field references – Equipment actively working on South China Sea platforms (Xijiang, Dongfang) and international jackups. We provide client contacts upon request.
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End‑to‑end lifecycle support – From FEED design, through manufacturing, classification, shipping, offshore commissioning, and 20+ years of parts support. No hand‑off between multiple vendors.
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Full classification & API compliance – Designs comply with API 2C, 4F, 7K, 8C, 16D, as well as DNV‑GL, ABS, BV, CCS rules. Your certifying surveyor is welcome at any stage.
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Heavy fabrication capacity – 180,000 m² campus with 2,100 advanced machines, 50,000 m² rig‑up yard, and lifting capacity up to 500 t for module load‑out.
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314 in‑house R&D engineers – We do not outsource engineering. This means faster responses to design changes and direct access to the people who designed your equipment.
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Short offshore‑specific lead times – Standard drilling module: 12–14 months. Marine crane: 6–8 months. Spare parts: 48‑hour airfreight from Dubai, Singapore, or Houston (agent).
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Competitive direct‑manufacturer pricing – No trading company markups. You pay factory prices for Sinopec‑level quality.
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Global offshore service team – Our field engineers hold BOSIET, HUET, and rig‑pass certifications. We provide on‑site commissioning, training, and remote support.
Frequently Asked Questions (FAQ)
Q1: What is your typical design life for offshore engineering equipment?
We design for a minimum 25‑year service life with proper maintenance. Critical structural components have an infinite fatigue design per API / DNV standards.
Q2: Do you provide engineering for custom modules that must fit existing platform hard points?
Yes – that is a core capability. We will survey or work from your existing platform drawings and design a module that matches your exact pedestal locations, crane reach, and utility tie‑in points.
Q3: What classification societies do you work with?
ABS, DNV, BV, CCS, and LR. We can also work with other national societies through sub‑contracted survey. Our project managers are experienced in managing class approvals.
Q4: Can you supply equipment with active heave compensation for deepwater operations?
Yes. Our active heave‑compensated winches and cranes use advanced hydraulic or electric control with motion reference units. Depth rating up to 3,000 m is available.
Q5: What is the lead time for a platform drilling module?
Typical 5,000 m class drilling module: 12–14 months from contract to factory acceptance test (FAT). This includes engineering, material procurement, fabrication, assembly, and load testing.
Q6: Do you offer on‑site commissioning support offshore?
Absolutely. Our service engineers mobilize to your platform or vessel for installation supervision, hook‑up, commissioning, and crew training. Typical offshore stay: 3–6 weeks depending on module complexity.
Q7: Can you provide NORSOK or UK HSE compliant equipment for North Sea projects?
Yes. We can design and certify to NORSOK R‑002 (lifting equipment) and UK HSE guidelines. Low‑temperature steel (‑40°C) and winterization packages are available.
Q8: How do you ensure quality control for offshore equipment?
We operate an ISO 9001:2015 certified QMS. For offshore engineering equipment, we follow approved ITPs (Inspection & Test Plans) with witness/hold points for client and class surveyors. All welding is per AWS D1.1 or ASME IX with 100% WPS/PQR traceability.
Q9: Do you supply spare parts for your offshore equipment from regional hubs?
Yes – we keep critical spares (hydraulic seals, bearings, PLC modules, sensors) in Dubai, Singapore, and through our Houston agent. Standard airfreight to most oil & gas hubs is 3‑5 days.
