— Xinran Group has successfully delivered a skid-mounted, oil-free process gas compressor unit to CNOOC Engineering-Bohai (Zhong 34-1 Oilfield). This delivery marks a significant breakthrough in China’s offshore oil and gas equipment sector, representing one of the most technically challenging and stringently manufactured benchmark projects in the domestic industry.
Core Highlights
1. Engineered for Extreme Offshore Conditions
The unit is tailor-made for the harshest offshore environments, designed to withstand high salt spray, high humidity, strong sea wind vibration, and seawater corrosion, while ensuring 24/7 uninterrupted operation with zero tolerance for failure. The entry threshold far exceeds conventional petrochemical and coal chemical equipment standards.
2. Top-Tier Material Selection & Configuration
Every component is selected specifically for offshore conditions, eliminating generic materials:
– Heat Exchange Units: Titanium alloy and copper-nickel alloy for extreme resistance to seawater erosion and chloride ion corrosion.
– High-Pressure Pipelines: Fully polished 316L ultra-low carbon stainless steel to prevent carbide precipitation, rust, and secondary media contamination.
– Structural Skids: Marine-grade high-strength special steel for seismic resistance and anti-deformation under alternating sea wind loads.
– Valves & Components: All valves (process, safety, gate, check, drain, regulating) carry CCS classification society certification, marine explosion-proof certification, and salt spray corrosion resistance certification, ensuring tens of thousands of hours of leak-free operation.
3. Pinnacle of Civilian Industrial Welding & Zero-Defect Testing
The project reached the highest level of civilian industrial welding:
– Welding: Over 1,400 critical welds and 3,600+ inches of pipeline welding, all executed under CCS Class I welding standards in a dust-free, constant temperature/humidity environment.
– Radiographic Testing (RT): 100% RT inspection on all critical high-pressure and pressure-bearing welds — over 4,000 X-ray films taken with zero porosity, zero slag inclusions, zero lack of fusion, and zero cracks. Defect tolerance rate: zero.
4. Ultra-High-End Anti-Corrosion Paint System
The coating system far exceeds land-based equipment standards:
– Substrate pretreatment per SSPC SP10 abrasive blasting (surface profile 50–85μm).
– Zinc-rich epoxy primer meeting SSPC Paint 20 (≥80% zinc powder content, ASTM D520 Type II).
– Three-layer coating: 75μm primer + 200μm intermediate + 60μm topcoat = 335μm total film thickness, pre-certified per ISO 12944, ensuring long-term resistance to salt spray, humidity, and UV aging at sea.
5. Comprehensive Standards Compliance & Certification
The project adheres to a massive overlay of international and national standards, including:
– API RP 14C/14E/14F, API STD 670/671, API 526
– ASME B16.5, B31.3, BPVC VIII-1
– EN 10269, GB/T 150 series
– CCS offshore platform certification (100% mandatory for all components within 2 meters of the unit)
6. Full-Process Digitalization & Standardization
The 8-month project, driven by 20+ experts, produced over 3,200 pages of professional engineering drawings — from system master plans and 3D layouts to pipeline isometric drawings, welding procedure specifications, and test outlines — achieving full-process digitalization, standardization, and systematization.
Strategic Significance
This delivery fully demonstrates Xinran’s core R&D and manufacturing capabilities in high-end marine engineering equipment and marks the company’s transition from land-based compressor manufacturing to full-scale offshore platform equipment delivery. It is a critical step in breaking foreign monopolies and advancing the localization of China’s offshore oil and gas compression equipment.
Contact Info:
Name: David
Email: Send Email
Organization: Shanghai xinran compressor co.,ltd
Website: http://www.cnaircompressor.ru
Release ID: 89204183
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Source : Xinran’s Offshore Compressor Delivered to CNOOC: A Milestone in High-End Localization
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