东营｜东营书写点绿成金转型答卷

Core Viewpoint - Dongying is transforming from a resource-based economy reliant on oil and gas to a green energy model, leveraging its abundant geothermal resources to drive economic and ecological benefits [2][15]. Geothermal Resource Overview - Dongying has identified 5,655 square kilometers of exploitable geothermal resources, accounting for 68.6% of its total area, with depths ranging from 1,300 to 2,200 meters and water temperatures between 54°C and 86°C [3][4]. - The total geothermal water resource is estimated at 344.7 billion cubic meters, equivalent to 128.47 billion tons of standard coal, representing about 30% of the province's total [3]. Development History - Initial geological surveys in Dongying focused on oil and gas, with geothermal resources being an unexpected discovery until the early 2000s [4]. - The first significant geothermal well, Dongre 1, was completed in December 2002, marking the beginning of geothermal resource development in the city [5]. Technological Innovations - Dongying has implemented advanced techniques such as "heat extraction without water consumption" and negative pressure reinjection to enhance geothermal energy utilization [6][7]. - The city has developed innovative reinjection well designs to address challenges associated with sandstone formations, which have low porosity and permeability [7]. Policy Support and Framework - The local government has established a robust policy framework to support geothermal energy development, including various measures and guidelines to facilitate exploration and utilization [11][12]. - Dongying aims to achieve a geothermal heating and cooling area of 35 million square meters by 2030, with streamlined approval processes for new projects [13]. Future Directions - The city plans to promote shallow geothermal energy utilization in large public buildings and explore new management and operational models for deeper geothermal resources [14]. - Ongoing projects include drilling deeper geothermal wells to explore high-temperature resources, potentially filling gaps in provincial geothermal resource assessments [14]. Economic and Ecological Impact - The shift to geothermal energy is expected to reduce heating costs and carbon emissions significantly, with projections of saving 15 yuan per square meter in heating costs and reducing coal consumption by 220,000 tons annually [6][10]. - Dongying's transition to green energy is seen as a model for other resource-based cities in China, contributing to national energy security and ecological sustainability [15].