Increasing number of stripper and marginal wells along with the growing demand to produce oil at the minimum cost will drive the enhanced oil recovery market size. In 2015, the EIA estimated about 380,000 stripper wells in the U.S. compared to about 90,000 non-strippers. As per the National Stripper Well Association (NSWA), the U.S. had an estimated 771,000 marginal wells in production with about 410,000 oil wells in 2013.