Abstract Reinjection is key to maintaining and managing geothermal resources during utilization. This study presents an updated review of the worldwide reinjection experience in geothermal fields. Data from 152 geothermal fields from around the world were used to investigate the impact of reinjection location, reinjection depth, distance from production wells, reinjection fluid temperature, and the amount of reinjection fluid. Positive and detrimental effects on the relevant reservoirs were assessed. Changes in reinjection strategies in response to production and the lessons learned from reinjection experiences in various fields are also discussed. This updated review demonstrates the importance of understanding the type of geothermal system before starting reinjection. Main challenges to successful reinjection are also reviewed along with possible solutions with particular emphasis on pressure support, cooling mitigation, injectivity, scaling and solid deposition, microearthquake and tracer testing.

中文翻译：

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地热田回注：2020 年更新的全球评论

摘要 回注是地热资源利用过程中维护和管理的关键。本研究对全球地热田回注经验进行了最新回顾。利用来自世界各地的152个地热田的数据，研究了回注位置、回注深度、与生产井的距离、回注液温度和回注液量的影响。对相关储层的正面和负面影响进行了评估。还讨论了响应生产的回注策略的变化以及从各个领域的回注经验中吸取的教训。这篇更新的评论证明了在开始回注之前了解地热系统类型的重要性。