Lubricating Asia's largest CCUS project to help achieve the 'dual carbon' goals.

In 2023, with reliable product quality, Kunlun Lubricants provided compressor oil for the Jilin Oilfield CCUS-EOR project, helping the carbon dioxide compressor equipment of the Jilin Oilfield CCUS project to operate safely and stably and providing reliable lubrication technical support for the large-scale development of CNPC's CCUS industry. The Jilin Oilfield's annual carbon dioxide injection volume reaches 500,000 tonnes, the largest injection volume in CNPC.
CCUS refers to carbon dioxide capture, utilization and storage technology, one of the key technologies for reducing carbon dioxide emissions and an important way to achieve the 'dual carbon' goals. The Jilin Oilfield's CCUS-EOR project is the only Chinese project among the 21 large CCUS projects currently in operation worldwide and is also the largest EOR project in Asia. The core power equipment of a CCUS project is the carbon dioxide compressor, whose main function is to compress carbon dioxide and inject it into formations below 800 m for storage. Therefore, the required compressor oil must not only meet the compressor's operating conditions but also adapt to the requirements of the carbon dioxide medium.
Since 2020, in response to the compressor oil demand of the Jilin Oilfield CCUS-EOR project, Kunlun Lubricants has carried out application cooperation with the Jilin Oilfield. However, because the compressors used for carbon dioxide in the Jilin Oilfield are of imported brands with a discharge pressure as high as 25 MPa, the Jilin Oilfield had concerns about the application performance of Kunlun compressor oil. To dispel its concerns, Kunlun Lubricants' Product Design Center and the Daqing Branch, together with the Jilin Oilfield, jointly carried out on-site compressor operating-condition surveys, demonstrated the feasibility of applying Kunlun compressor oil products to the compressors, studied and repeatedly revised the equipment oil plan, and finally, with technology and strength, completed the application of Kunlun hydrocarbon gas synthetic compressor oil KCSP220 in some of the Jilin Oilfield's carbon dioxide compressors, opening up the 'last mile' of product application.
In June 2021, upon learning that the on-site compressors had problems of rising discharge temperature and oil consumption, the Product Design Center immediately launched a product design tackling effort for KCSP220 compressor oil, completed improvements to the product design in the shortest time, met the on-site compressor lubrication requirements and won high recognition from the on-site equipment staff. In 2022, KCSP220 compressor oil achieved full application in the Jilin Oilfield's carbon dioxide high-pressure injection compressors.
In July 2023, the Jilin Oilfield introduced the DGY525 carbon dioxide supercritical high-pressure injection compressor unit independently developed by CNPC Jichai Chengdu Compressor Company. The Product Design Center, in light of the on-site compressor oil use in the earlier period, jointly formulated a recommended oil plan for the DGY525 compressor with Chengdu Compressor Company, enabling Kunlun KCSP220 compressor oil to be applied for the first time in a carbon dioxide supercritical high-pressure injection compressor unit.
Over three years, through continuous innovation and optimization, Kunlun compressor oil products have achieved promotion and application in the compressor equipment of the Jilin Oilfield CCUS-EOR project, laying a foundation for the high-quality and steady development of CNPC's CCUS project and contributing Kunlun Lubricants' strength to the achievement of the 'dual carbon' goals.