摘要:某地浸采铀试验矿床埋深超过700 m,渗透系数为0.47~0.56 m/d。为提高矿层渗透性,对目标矿层进行了CO2预疏通试验。实验室研究表明,CO2预疏通提高了HCO-3浓度,使流出液流速提高60%,金属离子弱溶出,同时降低了铀随预疏通溶液的溶出率。现场试验表明,矿层注液量提高32%,注液压力降低28%,显示预疏通对矿层渗透性提高效果明显。通过分析和计算,深部矿层本身的压力可提高CO2溶解度,进而提高水溶液解离产生的离子浓度,有利于增强疏通效果。
注:因版权方要求,不能公开全文,如需全文,请咨询杂志社
热门期刊服务
Acta Pharmacologica Sinica Journal of Semiconductors Journal of Genetics and Genomics Communications in Theoretical Physics Hepatobiliary Pancreatic Diseases International Journal of Systems Engineering and Electronics Hepatobiliary Pancreatic Diseases International China World Economy Chinese Optics Letters Applied Geophysics Acta Geologica Sinica Acta Oceanologica Sinica