Diversified Gas & Oil has been on a mission to buy as many non-shale (conventional) oil and gas wells as it can in the Appalachian Basin. It owns over millions of acres and tens of thousands of wells–many of them located in Pennsylvania. Last fall the PA Dept. of Environmental Protection (DEP) told Diversified it wants 1,000 of its nonproducing wells plugged in the next five years. Diversified countered it would like to plug 2,000 wells, but over the next 20 years. They ended up compromising.