Since pure foaming agent with short half-value period causes a poor plugging effect for high-permeability reservoir with water channeling, this paper studies on gel foam sysem.
针对纯发泡剂半衰期较短、对已形成注入水窜流通道的高渗透储层封堵效果较差的实际问题，开展了凝胶泡沫体系的研究。
It showed that both the number and value of contracts awarded during the first half of this year had declined in comparison with the same period in 2006.
报告显示，与06年同期相比，今年上半年承包业务在数量及价值方面都有所下降。
It showed that both the number and value of contracts awarded during the first half of this year had declined in comparison with the same period in 2006.
报告显示，与06年同期相比，今年上半年承包业务在数量及价值方面都有所下降。
应用推荐