Study on geothermal resource occurrence characteristics and carbon emission reduction potential in Dafeng District, Jiangsu Province

This paper is the result of geothermal geological survey engineering.

Objective This study focuses on Dafeng District, Yancheng City, northern Jiangsu Province, where the occurrence conditions of geothermal resources are investigated to support the achievement of carbon peak strategic goals and the rational development and utilization of local geothermal resources. A systematic study on the occurrence characteristics of geothermal resources in geothermal wells and the coal-saving and emission reduction potential of geothermal development and utilization in this area has important practical significance.

Methods Through comparative analysis of the geothermal geological conditions of three typical geothermal wells in Hengbei Village, Dutch Flower Sea, and Milu Town of Dafeng District, including "heat source, channel, reservoir, and caprock", as well as water quality analysis and evaluation of the geothermal wells in this area, and theoretical calculations of reserves and recoverable reserves.

Results The study summarizes the zoning characteristics of geothermal resources in Dafeng District, and concludes that the main directions of geothermal well development and utilization in this area are physiotherapy, bathing, and heating. Theoretically, the three geothermal wells can save a total of 8884 t of coal annually, equivalent to 21197 t of CO₂ emission reduction. The geothermal water reserves in the protection areas of the three geothermal wells in Hengbei Village, Holland Flower Sea, and Milu Town can theoretically save a total of 18885886 t of coal, equivalent to 45061725 t of CO₂ emission reduction.

Conclusions The research findings provide reference for geothermal resource exploration, development, and carbon emission reduction potential analysis in Dafeng District.