Refinery & Oil Depot
A Large Northeast Oilfield Depot
Oil Depot Quality Control in Harsh Cold
Key outcomes
- National Energy Supply Security: Serving a major domestic onshore oilfield, having passed rigorous state-owned enterprise access audits
- Reliable Operation in Harsh Cold: Stable operation at -30°C extreme cold, ensuring winter supply tasks
- Efficient Loading Capability: 40m³/h stable output, ensuring smooth execution of the oilfield's winter supply tasks
Case Study
Stage 1 · Customer Problem
📋 Customer Problem
A major Northeast oilfield depot in Heilongjiang Province serves as a core storage and transport facility for one of China's largest onshore oilfields. The depot operates under extreme conditions that threaten fuel quality and supply reliability:
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Extreme Cold (-30°C)
Heilongjiang winters demand equipment that operates stably at -30°C. Standard filtration systems suffer pipeline freeze-blockage and seal failure.
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Aging Pipeline Corrosion
Decades-old underground pipelines corrode, releasing iron oxide (rust) and scale into fuel during high-speed transport.
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Winter Supply Pressure
Winter is the critical supply security period. The loading bay cannot tolerate dispatch interruptions from equipment failure.
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SOE Access Standards
Large state-owned enterprises impose strict HSE and quality access requirements that ordinary equipment cannot meet.
Stage 2 · Fuel Analysis · NEW
🔬 Fuel Analysis
Fuel sampling at the loading bay revealed contamination from aging pipeline infrastructure and temperature-cycling condensation:
| Metric | Before Treatment | After Treatment | Improvement |
|---|
| ISO 4406 Cleanliness | ~22/20/17 | 14/12/9 | 3 levels ↑ |
| Free Water (ppm) | ~180 | ≤50 | 72% ↓ |
| Visual Appearance | Cloudy, rust-visible | Clear, transparent | — |
| TAN (mgKOH/g) | 0.15 | 0.08 | 47% ↓ |
| Particle Composition | Iron oxide, pipeline scale, sand | ≥98% removed at ≥5 μm | 98% ↓ |
Values are representative based on site conditions (aging pipeline network, -30°C environment, winter sampling). Field testing confirmed visual clarity improvement and compliance with national dispatch standards.
Stage 3 · Solution
🛠️ Solution & System Configuration
Jingyuan provided the depot with a "harsh-cold version" 40m³/h purification solution using the JY-DL60 platform. Selection logic: the 40m³/h flow rate matches the loading bay's peak dispatch capacity, while the harsh-cold adaptation package ensures reliable operation at -30°C.
Model
JY-DL60 (Harsh-Cold Version)
Membrane
Polymer Rigid Composite, 5 μm nominal
β Value
≥200 at rated pore size
Operating Pressure
0.2–0.4 MPa
Regeneration
Gas-pulse regeneration (brief 5-15 min safety pause)
Explosion-Proof
Ex d IIB T4
Cold Adaptation
Low-temp valves, heat-tracing interface
Key design decisions: The oleophilic-hydrophobic membrane material efficiently intercepts particulate impurities while synergistically removing trace free water. Low-temperature-resistant valves and seals prevent equipment freeze-cracking at extreme low temperatures. The high dust-capacity gradient membrane configuration effectively intercepts large rust particles from the aging pipeline network.
Stage 4 · Results
📈 Quantified Results
100%
Winter Supply Completion
| Metric | Before | After | Improvement |
|---|
| Filter Replacement Cycle | Every 2–4 weeks | 0 (3-year membrane life) | 100% eliminated |
| Annual Consumable Cost | ~¥36,000 | ¥0 | 100% ↓ |
| Unplanned Downtime | 3–5 times/year | 0 times | 100% eliminated |
| Dispatch Fuel Clarity | Cloudy with particles | Clear and transparent | — |
| Winter Supply Tasks | Interrupted by equipment failure | 100% completion | — |
The successful deployment marks Jingyuan's product quality passing the rigorous access threshold of the domestic petroleum industry. At 40m³/h, the equipment operates smoothly, and dispatched diesel is visually clear and free of impurities. During winter supply periods, the system effectively intercepts large volumes of pipeline sediment, ensuring smooth operation of downstream engineering vehicles and transport fleets.
Stage 5 · Lessons Learned · NEW
💡 Lessons Learned
✅
Key Success Factor
The harsh-cold adaptation design (low-temperature-resistant valves, seals, and heat-tracing interface) was the critical decision. Without this package, standard filtration equipment would fail at -30°C, causing pipeline freeze-blockage and supply interruption during the most critical winter period.
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Common Pitfall
Many northern oil depots underestimate the impact of aging pipeline corrosion on fuel cleanliness. They rely on reactive cartridge replacement, which is costly, labor-intensive in extreme cold, and unreliable during peak supply periods. Proactive membrane filtration with gas-pulse sequential regeneration eliminates this reactive maintenance cycle entirely.
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Replication Advice
Directly applicable to all northern oil depots (>40°N latitude) with aging infrastructure. The harsh-cold version design can be adapted for Russian, Central Asian, and Mongolian oil facilities. For depots requiring >60 m³/h, multiple JY-DL60 units can be deployed in parallel with synchronized group-switching regeneration.
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Customer feedback
In the Northeast, equipment must withstand the test of harsh cold—it must operate reliably at extreme low temperatures. Jingyuan's 40m³/h system proved its value during the most challenging winter months. It effectively removes pipe scale and impurities, ensuring the fuel we supply is stable and reliable in quality.
Refinery & Oil Depot
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