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我队在北京地区开展地下热水勘探以来,由于热水储存在千米左右深部灰岩中,钻孔口径小,出水量受到影响,加之有的钻孔,地层裂隙不发育,又被钻进中岩粉所充填,以致影响了井的出水量。因此,我们自1971年开始,对类似上述井孔采取酸化处理。经过处理,多数井孔的单位涌水量,均有不同程度的增加,个别井孔效果特别显著。现将具体做法简结如下:一、灌酸前的准备工作1.计算灰岩井段的体积,另加10%的附加量,即为该井所需灌酸数量。根据需灌
After our team launched the underground hot water exploration in Beijing, the hot water was stored in deep limestone around 1,000 kilometers. The borehole diameter was small and the water output was affected. In addition, some boreholes and cracks in the ground were not developed and they were drilled. The medium rock powder was filled so as to affect the water output of the well. Therefore, since 1971, we have adopted acidification treatment for similar well bores. After treatment, the unit volume of water in most wells has increased in varying degrees, and the effect of individual wells is particularly significant. The specific procedures are briefly summarized as follows: 1. Preparation before the acid filling 1. Calculate the volume of the limestone section, plus an additional 10%, which is the amount of acid required for the well. According to need irrigation