Exploration and Analysis of Technical Transformationon Old Geothermal Reinjection Systems in the Central City of Tianjin

Abstract

Some geothermal reinjection wells in the central city of Tianjin have been used for a long time, and plugging is a common phenomenon, even inject flowrate attenuation in a lot of reinjection wells. In order to enhance the reinjection ability of wells, technical transformation had been carried out on old geothermal reinjection systems by acidifying well, install filtration equipment which can effectively prevent physical plug of reinjection, alleviate attenuation of reinjection amount, increase the rate of reinjection, through these measures the old reinjection well can meet the needs of two production wells, which create a new way to solve the single production in Tianjin.