Factors affecting the fluid temperature of geothermal energy wells converted from abandoned oil and gas wells

The transition from fossil energy to clean is an ongoing trend. Because geothermal buried beneath oil and gas wells, it desirable convert abandoned wells wells. candidate can be dry holes in exploration or end-of-life depleted reservoirs. There a knowledge gap fill between the well conversion engineering, that is, factors affecting performance of are not fully understood. This work investigated temperature produced water converted Both vertical horizontal options were considered. result field case study using data for Songliao Basin Northeastern China shows that, without pipe insulation, returned very close injected water, regardless With higher than well. declines quickly as thermal conductivity insulation increases low-thermal region. affected by hole section length heat transfer. But this effect levels off after about 1,000 m reached, meaning adequate transfer zone water. paper provides analytical method technical feasibility assessment converting Cited as: Zhang, P., Guo, B. Factors fluid Advances Geo-Energy Research, 2023, 9(1): 5-12. https://doi.org/10.46690/ager.2023.07.02