CSI, solvent huff and puff, foamy oil and the head on a glass of beer – no it’s not the opening scenes of a popular TV crime series. “Cyclic solvent injection (CSI), also known as solvent huff-and-puff is a method of enhancing heavy oil recovery that produces foamy oil, which resembles the head on a glass of beer,” says Dr. Farshid Torabi, Professor and Program Chair, Petroleum Systems Engineering at the U of R. This foamy oil phenomenon is responsible for improving the production of heavy oil and is the focus of Dr. Torabi’s research, which is being funded by a $150,000 Petroleum Technology and Research Centre (PTRC) grant.