In oilfield operations, generator sets serve as essential equipment that provides stable power support for drilling, oil extraction, and transportation processes. However, these units emit substantial emissions containing particulate matter (PM), carbon monoxide (CO), hydrocarbons (HC), and nitrogen oxides (NOx) during operation. These pollutants not only damage the ecological environment around oilfields but also pose health risks to on-site personnel.
When operating at full load, Jichai’s 400kW generator sets emit up to 3,000 mg/m³N of NOx – exceeding China’s national standard of ≤150 mg/m³ and ten times higher than coal-fired boilers of equivalent power. Meanwhile, oilfield gas from associated gas fields shows significant sulfur fluctuations, with SO₂levels peaking above 200 ppm. Traditional catalysts degrade rapidly under these conditions, leading to reduced denitrification efficiency. Maintenance in remote oilfields proves challenging: conventional systems require shutdowns for ash cleaning or catalyst replacement, resulting in high single-maintenance costs and delayed operational response.
To address these challenges, there is an urgent need to develop a high-efficiency, stable, and easy-to-maintain denitrification technology. First, researchers should develop new catalysts with enhanced sulfur resistance to maintain optimal denitrification efficiency in high-sulfur environments while reducing catalyst deactivation risks. Second, adopting a modular SCR system enables real-time catalyst replacement, minimizing downtime and maintenance costs. Additionally, integrating intelligent control systems for real-time emission monitoring and dynamic adjustment of reaction parameters will further improve denitrification efficiency and system stability.
The SCR denitration system of Green Valley Environmental Protection has helped purify the exhaust gas of a generator set in an oil field in Tianjin. The system has independent intellectual property rights and a number of invention patents, and has accumulated some experience data in special application fields such as oil field.
Project: 6 sets of 400kw generator set exhaust gas purification project in a certain oil field in Tianjin
Brand model: Jichai 400kw
Model: GRVNES80-T1-24
The original NOx emission of 3000mg/m3N is reduced to ≤75mg/m3N
Green Valley Environmental Protection’s SCR system reduces NOx to N₂and H2O through controlled temperature and catalyst application, achieving 98% denitrification efficiency. In oilfield environments where generator loads fluctuate significantly, this SCR system employs intelligent design and patented hybrid technology to enable precise metered injection. It effectively manages load variations while ensuring stable compliance with nitrogen oxide emission standards, maintaining ammonia slip below 3ppm – balancing treatment efficiency with cost-effectiveness. The system features compact architecture, smart operation, real-time monitoring, data management, remote control, and online transmission capabilities. These integrated functions allow oilfield managers to monitor and manage exhaust purification systems in real time, significantly reducing manual intervention.
Green Valley Environmental Protection will continue to uphold the philosophy of “Green Development, Protecting Blue Skies and White Clouds”. We will continuously increase R&D investment to enhance comprehensive exhaust gas treatment technologies. In response to evolving trends in the oilfield industry and rising environmental standards, we are developing more efficient, energy-saving, and intelligent purification systems and equipment. This commitment drives steady progress for the new energy sector on its green development path, contributing to sustainable growth in the oilfield industry.
Post time: Aug-13-2025