DRILLING TECHNOLOGY AND EXPLOITATION EVALUATION IN THE TONGRE-19 GEOTHERMAL WELL CONSTRUCTION IN BEIMAZHUANG AREA OF TONGZHOU DISTRICT,BEIJING

In recent years, as a new type of renewable energy, geothermal resources obtained significant environmental, social and economic benefit. Through the means of targeted data collection, high-precision gravity survey, well correlation analysis, and scientific construction organization,Tongre-19 and injection geothermal well had been successfully completed. And the mode of combination of exploitation and injection was employed in this project. The depth of the Tongre-19 geothermal well is 2370.00m, the well yield is 603m3d-1,the temperature of water is 45℃.With these conditions, the well has been evaluated as high-quality geothermal well. For the important geographical position, being adjacent to Beijing Sub-center, this project can provide important data and present important references for geothermal resources research in this area.