稠油井氮气泡沫调剖技术研究与应用

摘要

Nitrogen foam profile control technology is a certain proportion of nitrogen and foaming agent,the use of foaming agent in the formation of steam,water channeling flow channel in the flow of high viscosity foam flow increase the flow resistance, sealing the high permeability layer,improve the steam flow volume,improve oil displacement efficiency.%氮气泡沫调剖技术是在注蒸汽时通过加入一定比例的氮气和发泡剂，利用发泡剂在地层汽、水窜流孔道中产生高粘度泡沫流增大流动阻力，封堵高渗层，提高蒸汽的波及体积；同时，发泡剂作为一种表面活性剂，能大幅降低油水界面张力，改善岩石表面的润湿性，提高驱油效率。