en.Wedoany.com Reported - The Yunre-3 well, located in the pilot test zone of the West Heat Source Plant in the Thermal City of Yuncheng, Shanxi Province, China, has officially commenced drilling. This marks the city's geothermal heating development entering a layout characterized by "north-south coordination and phased advancement." Situated in the southwestern block of Yuncheng's central urban area, the Yunre-3 well is the first pilot test well in this block. It is designated as a production well and will subsequently form a production-injection system with the supporting injection well, Yunre-4, to serve geothermal heating development and regional heat source continuity.
The Yunre-3 well project is being advanced through deepened cooperation between PetroChina Jidong Oilfield and Yuncheng City. Its primary task is not merely single-well heat extraction but rather to verify the geothermal resource conditions and well group operational parameters in the southwestern block of the central urban area through a development model of "heat extraction without water consumption." According to the current plan, the Yunre-3 and Yunre-4 wells will form a complete production-injection system. This signifies that the project has transitioned from preliminary feasibility studies to the phase of on-site drilling and parameter acquisition, also providing pilot data for subsequent well network deployment.
During the well group construction, the project will systematically conduct multiple tests to obtain key parameters such as target geothermal reservoir temperature, productivity, water quality, and production-injection ratio, while also gathering data on reservoir permeability, static/dynamic water levels, and drawdown. This data will be directly used to determine the development boundaries, well placement, and operational methods for geothermal heating in the southwestern block, moving beyond the level of single-well construction.
According to disclosed plans, PetroChina Jidong Oilfield will use the Yunre-3 well as an entry point to gradually advance geothermal development from single-point testing to area-wide coverage. For the southwestern block of Yuncheng's central urban area, following the commencement of drilling for this pilot test well, the next key focus of the geothermal heating project will shift to testing and evaluation, production-injection system support, and feasibility studies for large-scale well network plans.
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