The drill string equipped with a roller drill bit began to steadily penetrate into the underground, marking the official start of drilling work for the second carbon dioxide geological storage well of the 400000 ton/year pilot test project in Yulin Chemical's 4 million ton/year CCS demonstration project, namely Yucarbon-2 well.

The Yucarbon-2 well is an important part of Yulin Chemical's active response to the national policy of "carbon peak and carbon neutrality", promoting the advancement of CCS demonstration projects. The completion of this geological storage well will achieve up to 100000 tons of mixed carbon dioxide geological storage annually, contributing significantly to the environmental protection cause. The Yucarbon-2 well not only has the function of an exploration well for in-depth exploration of underground conditions, but also serves as a data well, providing valuable geological data for scientific research teams. More importantly, it will also serve as a carbon dioxide injection well to test the vertical injection capacity of mixed carbon dioxide into the reservoir through a vertical well structure, helping researchers better understand the sequestration mechanism of carbon dioxide in saline water layers. At the same time, the Yucarbon-2 well will also reveal the vertical distribution characteristics of the saline water layer near the wellbore from the interlayer structure, so as to accurately grasp the thickness and lithology changes of the saline water layer, providing strong support for the research of carbon dioxide saline water layer storage capacity.

Yulin Chemical aims to continuously explore the storage capacity of the project in the saline water layer and carbon dioxide storage capacity of the Ordos Basin. Through the implementation of full well coring and indoor analysis and testing in Yucarbon-1 well, and the design of a supporting underground monitoring system, high-purity carbon dioxide is injected to explore the injection capacity in the saline water layer; Through well testing, profile testing, and reservoir fracturing transformation of Yucarbon-2 well, further explore the injection capacity of low purity mixed carbon dioxide in vertical wells, compare the impact of reservoir fracturing transformation on carbon dioxide injection capacity with Yucarbon-1 well, and lay a solid foundation for subsequent project implementation. At present, the drilling operation of Yucarbon-1 well has been completed, and the next step will be to carry out downhole perforation and fracturing operations. Keywords: engineering construction, engineering news, engineering construction information.

The official drilling of Yucarbon-2 well marks another significant progress in the 400000 ton/year pilot test project of Yulin Chemical's 4 million ton/year CCS demonstration project. This achievement is not only an important milestone in project development, but also provides solid technical support for the subsequent large-scale development and engineering demonstration projects of million ton CCS technology, and even the smooth landing of the final 4 million ton/year CCS engineering demonstration project. The drilling of Yucarbon-2 well not only demonstrates Yulin Chemical's leading position in carbon capture and storage technology, but also reflects the company's determination and strength in actively responding to global climate change challenges and promoting green and low-carbon development. (This article is from the official website of Jiandao: www.seetao. com. Reproduction without permission is not allowed, otherwise it will be punished. Please indicate Jiandao's website and the original link when reprinting.) Jiandao's mechanical column editor/Zhou Yingwen