The water-plugging technique of nitrogen foam for plugging the water layer of oilfield by Jamin effect has been studied in this paper.

• 氮气泡沫堵水技术是在注入液体中掺入氮气使发泡剂发泡,利用气阻效应(贾敏效应),使液体不能沿微观大孔道、宏观高渗层或高渗区窜流,达到封堵高含水层的目的。