Slurried polymer foam system and method for the use thereof

摘要

This invention record describes a method for fracturing subterranean formations utilizing a foam comprising a water-based fracturing fluid comprised of water or brine or water and brine or brine and alcohol and a polymer slurry in diesel oil. Preferably, the polymer is comprised of a guar polymer and diesel oil in equal amounts. The foamer component preferably is comprised of cocobetaine, a solvent, an alpha-olefin sulfonate and water. The energizing phase component is comprised of carbon dioxide, nitrogen or a mixture of carbon dioxide and nitrogen.