测井在水文地质钻探中划分咸淡水分界面的应用

The Application of Logging in Dividing Saltwater and Freshwater Interface in Hydrogeological Drilling

河北平原沿海地区由于常年海水入侵,咸水在浅层水当中普遍存在,给当地人民生活和经济发展造成了严重影响。为了最大程度地降低这些影响,更合理地开发利用咸水,在水文地质钻井当中如何准确测定咸淡水分界面就变得十分重要。物探测井是通过测量钻孔内岩石的各类物理参数和钻孔参数状况来解决地质问题的一种物探方法,其中利用物探测井划分咸淡水分界面在水文地质钻探中应用广泛。本文结合实例介绍了物探测井在水文地质钻探中如何划分咸淡水分界面,为实际工作中划定咸淡水分界面提供了理论依据及应用实例。

Due to the perennial seawater intrusion in the coastal area of Hebei Plain,salt water is widespread in shallow water,which has a serious impact on the local people’s life and economic development.In order to minimize these effects and develop and utilize salt water more reasonably,how to accurately determine the saline water interface in hydrogeological drilling becomes very important.Geophysical logging is a geophysical method to solve geological problems by measuring various physical parameters and borehole parameters of rocks in boreholes.The division of salt water interface by geophysical logging is widely used in hydrogeological drilling.Combined with examples,this paper introduces how to divide the saline water interface in hydrogeological drilling by geophysical logging,which provides a theoretical basis and application examples for delimiting the saline water interface in practical work.