U.S. number of abandoned oil and gas wells 2020
As of 2020, Pennsylvania had an estimated 338,700 abandoned oil and gas wells, making it by far the U.S. state with the highest number of unused wells. In March 2020, there were 544 drilled but uncompleted oil and gas wells in the Appalachia oilfield - which is partly located in Pennsylvania. Among the leading ten states with the highest number of abandoned oil and gas wells, Texas, Kansas, Illinois, and Louisiana were the ones with lowest numbers. Each one of these four states accounted with less than seven thousand abandoned oil and gas wells.
