12 agosto 2014
Researchers demonstrate that foam may be a superior fluid to displace and extract tough-to-reach oil. In tests, foam pumped into an experimental rig that mimicked the flow paths deep underground proved better at removing oil from formations with low permeability than common techniques involving water, gas, surfactants or combinations of the three.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/4KqvVknpZ_8/140812163800.htm
