三相泡沫密封性能的实验研究

Experiment Investigation on the Sealing Ability of Triphase Foamy Fluid

本文以表面物理化学为基础,探讨了泡沫流体的稳定性及其密封性能,得出了气液两相泡沫流体可作为封堵裂隙的介质,并且只要加入适量的固相填充剂,其密封性能可显著提高的结论,从而为煤层瓦斯压力测定的封孔技术,尤其是煤巷和松软岩层的封孔提供了一种较为理想的材料。研究工作表明,三相泡沫封孔技术是一项具有广泛实用前景的新技术。

On the basis of surface physical chemistry, this paper discusses the stability of foamy fluid and its sealing ability. Experiments showed that foamy fluid can be used as material for fracture sealing, and its sealing ability would be greatly enhanced, provided some solid mediums are added. The triphase foamy fluid is an ideal material of borehole sealing in the gas pressure measurement of coal seam and soft rock seam. The research proved that the sealing technique of triphase foamy fluid is a new technology which will have vast practical prospects.