Project Overview
| Client | North China Oilfield |
|---|---|
| Location | Wen’an, Langfang, Hebei Province |
| Challenge | A DN200 crude oil pipeline was at high risk of rupture due to severe flooding, threatening major environmental and operational damage. |
| Solution | Emergency installation of two block valves using hot tap and stopple techniques to enable safe isolation without shutdown. |
| Results | Project completed in 72 hours with zero safety incidents, preventing a potential oil spill and avoiding an estimated $2M+ in production losses. |
The Challenge: A Pipeline on the Brink of Failure
In late July 2025, continuous heavy rainfall triggered widespread flooding across Beijing, Tianjin, and Hebei. For North China Oilfield, the crisis was immediate: a DN200 crude oil pipeline in Wen’an was dangerously exposed to floodwaters.
The stakes were immense. Pipeline failure would lead to:
- Major crude oil spill into floodwaters, worsening an already severe environmental situation.
- Extended production shutdowns across regional crude networks.
- Significant safety risks to nearby communities and emergency crews.
The client needed a pipeline emergency repair team that could act fast—without compromising safety or requiring a full system shutdown.
🚨 This was not a routine maintenance case. It was a true emergency pipeline shutdown scenario where every minute counted.
Our Solution: Rapid Deployment of Hot Tap & Stopple Technology
Within hours of notification, our 24/7 pipeline emergency response team was mobilized. We proposed a two-phase pipeline emergency repair services plan centered on hot tap and stopple technology—allowing us to install two emergency block valves while the pipeline remained in operation.
Key Technical Measures:
- Emergency Block Valve Installation
- Two full-bore DN200 block valves installed at critical points.
- Enabled immediate pipeline isolation in case of rupture.
- Hot Tapping & Stopple Integration
- Performed under controlled pressure using certified equipment.
- Eliminated the need for system-wide shutdown.
- Flood-Adapted Construction
- Portable dewatering systems for continuous pit management.
- All-weather welding and assembly protocols.
- Real-Time Risk Monitoring
- On-site environmental and pipeline integrity tracking.
🔧 Why This Approach Worked:
- Zero Production Interruption: The hot tap and stopple method allowed the crude line to remain operational throughout the repair.
- Safety First: All work complied with international pipeline safety standards (ASME B31.4 / API 1176).
- Flood-Resistant Logistics: Our team was equipped with amphibious vehicles and mobile water pumps for access to submerged work areas.
Implementation: 72-Hour Race Against the Floods
Phase 1: Rapid Mobilization (July 26, 22:06 – July 27, 03:04)
- 22:06: First truck with emergency pipeline repair equipment departs.
- 00:14: All major equipment en route to Wen’an.
- 03:04: Excavation and slope preparation completed despite heavy rain.
Phase 2: Critical Valve Installation (July 27, 04:27 – July 29, 12:00)
- 04:27: Hot tap drilling commenced on live pipeline.
- 16:30: First block valve successfully installed and pressure-tested.
- July 28, 14:00: Second valve installation underway amid rising floodwaters.
Phase 3: Final Testing & Commissioning (July 29, 12:00 – 20:20)
- 20:20: Downstream stopple completed. All systems tested and operational.
🌧️ On-Site Challenges Overcome:
- Continuous rainfall and floodwater infiltration
- Night operations with limited visibility
- Multiple equipment logistics in submerged terrain
Results & Impact: Securing Operations Against Future Disasters
The pipeline emergency repair project delivered measurable outcomes that extended far beyond immediate risk mitigation:
Quantifiable Results:
- Zero Safety Incidents: Full compliance with all safety protocols despite extreme conditions.
- 72-Hour Completion: From mobilization to operational readiness.
- $2M+ in Prevented Losses: Based on client’s production value and potential environmental cleanup costs.
- 2 Emergency Block Valves: Installed and operational for future security.
Client Testimonial:
“When the floodwaters threatened our primary crude line, we needed a team that could respond immediately with technical expertise. Their pipeline emergency repair services team not only prevented a disaster but did so without shutting down our operations. This was world-class emergency response for oil and gas pipelines.”
— Zhang Wei, Pipeline Operations Manager, North China Oilfield
Long-Term Value:
- Enhanced Pipeline Resilience: The installed valves now serve as permanent risk mitigation assets.
- Regional Environmental Protection: Contributed to Xiongan New Area flood defense efforts.
- Proven Emergency Protocol: This project now serves as a benchmark for flood-related pipeline risk management across China.
Why Choose Our Pipeline Emergency Repair Services?
This case study exemplifies our core capabilities in emergency pipeline repair:
- 24/7 Rapid Response: We mobilize within hours, not days.
- Live-Line Expertise: Hot tap and stopple competency ensures zero production loss.
- Extreme-Environment Experience: From floods to seismic events, we operate where others cannot.
- End-to-End Project Management: From risk assessment to commissioning and documentation.
Ready for Pipeline Emergencies?
Don’t wait for a crisis to test your response plan. Contact our pipeline emergency repair services team today for:
- 📞 24/7 Emergency Hotline
- 🔧 Pre-Risk Site Assessments
- 🛠️ Preventive Maintenance Programs
Ensure your operations are protected against the unexpected with experts who have proven results in the most challenging conditions.
