影响砂岩型热储回灌因素的分析与认识

Analysis and understanding of factors affecting sandstone-type thermal storage recharge

摘要:

通过分析地下水分层测试获取的数据，认识到含水层由于受泥质含量、孔隙度、渗透率等因素影响显示各储层的压力有一定差异，指出同一地热井不同含水层之间具有越层补给的现象。分析了越层补给、洗井工艺及钻井液侵入储层因素对回灌产生的影响，提出了实行分层抽采回灌、地热井钻完井及成井工艺精细化作业的建议。

Abstract:

By analyzing the data obtained from groundwater stratification tests， it was realized that the pressure of different reservoirs varies due to the influence of mud content， porosity， permeability and other factors， indicating the phenomenon of cross layer recharge between different aquifers in the same geothermal well. This paper analyzed the impact of factors such as cross layer supply， well flushing process， and drilling fluid invasion into the reservoir on reinjection， and proposed suggestions for implementing layered pumping reinjection， geothermal well drilling and completion， and fine technology on well formation.