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地热资源作为一种清洁能源,在天津市广泛应用于采暖、种植养殖、旅游等各方面,节约大量传统化石能源的同时,改善了环境,提高了城市的生活水平和质量,促进了经济发展。自上世纪90年代,天津市地热资源进入规模化开发,形成了以城区及近郊为中心的地热开采布局,其主要开采的蓟县系雾迷山组热储水位年降幅达到3～8米。地热回灌作为维持热储压力的有效手段,实践回灌生产已有10余年历史,对维持热储压力起到一定作用。近年随着对资源保护的重视程度提高,回灌规模的逐年扩大,在有效维持热储压力的前提下,如何合理布置回灌井,避免回灌对热储温度场产生负面影响,成为保障地热资源可持续发展的重要任务。本文依据多年勘查和试验得出的地热地质数据,建立集中开采区的蓟县系雾迷山组热储层地热地质模型和数学模型,通过三种不同的回灌布井方案,探讨最优的回灌井布局,以期作为今后地热资源保护开发管理的借鉴和依据。
As a kind of clean energy, geothermal resources are widely used in heating, breeding, tourism and other aspects in Tianjin, saving a large amount of traditional fossil energy, improving the environment, improving the living standard and quality of the city and promoting economic development. Since the 90s of last century, geothermal resources in Tianjin have entered into large-scale development, forming a geothermal exploitation layout centering on urban areas and suburbs. The annual thermal storage water level of the Jishan Wumishan Formation in Jixian County has been reduced by 3 to 8 meters. Geothermal recharge as an effective means of maintaining thermal storage pressure, practice recharge production has more than 10 years of history, to maintain thermal storage pressure played a role. In recent years, with the increasing emphasis on resource protection and the increasing scale of recharging, how to properly arrange recharging wells and prevent recharging to negatively affect the thermal storage temperature field under the premise of effectively maintaining thermal storage pressure, The important task of resource sustainable development. Based on geothermal geological data obtained through many years of exploration and experiment, this paper establishes the geothermal geologic model and mathematical model of the Jishan Wumishan formation thermal reservoir in the concentrated mining area. Through three different schemes, Well layout, with a view to geothermal resources for the future development and management of conservation reference and basis.