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CO_2气可作为天然矿床开采利用,但CO_2气溶解于水形成碳酸气水混合物后,对矿床水文地质勘探极为不利。在广东某地区酸性火山岩矿床中,却遇见这种特殊现象。常因钻孔揭露后或抽水时产生多种特殊的动态变化,既测不到准确的水位和流量,更无法做多次水位降深试验,严重的干扰了正常的抽水试验。为满足矿床水文地质勘探的需要,我们曾翻阅了国外碳酸水勘探的有关资料,在学习油田开采经验的基础上,通过实践摸索了一套适合于该矿床的抽水试验方法,基本上满足了矿床水文地质勘探需要。现将工作中的体会总结如下。以供参考。
CO_2 gas can be exploited as a natural ore deposit. However, when CO_2 gas is dissolved in water to form a carbonated gas-water mixture, hydrogeological exploration of the deposit is extremely unfavorable. In some areas of Guangdong acidic volcanic deposits, but met this special phenomenon. Often due to drilling after drilling or pumping a variety of special dynamic changes, both not to measure the exact water level and flow, but also can not do multiple water level drop test, a serious interference with the normal pumping test. In order to meet the need of hydrogeological prospecting, we have read the relevant data of overseas carbonated water exploration. Based on the learning experience of oilfield exploration, we have explored a set of pumping test methods suitable for this deposit, basically meeting the requirements of deposit Hydrogeological exploration needs. Now the work experience summarized as follows. for reference.