砂岩孔隙型回灌井成井工艺探析——以天津市滨海新区馆陶组热储为例

Explore and Analyse of Sandstone Pore Type Reinjection Well's Drilling Technology——taking Tianjin Binhai New Area's Geothermal Reservoir of Guantao Formation for example

砂岩热储回灌技术是孔隙型热储可持续开发利用中的主要技术难题,也是影响孔隙型热储地热资源实现可持续开发利用的一个瓶颈问题。而其中回灌井成井工艺是影响砂岩热储回灌效果的一个重要因素。天津开展新近系孔隙型砂岩热储回灌井成井工艺研究已有二十多年历史,积累了丰富的经验,尤其在滨海新区的馆陶组热储取得了较好的应用效果。本文对目前常用的回灌井成井工艺进行了分析对比,为今后不同地区回灌井施工提供了借鉴。

Technology of sandstone geothermal reservoirs reinjection is not only the main technical problem in the sustainable development and utilization of the pore type heat reservoir,but also the bottleneck problem which affecting pore type geothermal reservoir resources to achieve sustainable development and utilization.And the reinjection well＇s drilling technology is an important factor which affects the reinjection of sandstone reservoir.Tianjin has studied on sandstone pore type geothermal reservoirs reinjection well＇s completion technology of Neogene porous for more than 20 years,has accumulated plentiful experience, and achieved good application results in Binhai New Area＇s Guantao geothermal reservoir.In this paper,the commonly used technologies of reinjection wells were analyzed and compared to provide a reference for construction of reinjection well in different regions in the future.