|
|
|
|
|
by dr_dshiv
1568 days ago
|
|
Here is a very recent paper describing three worst of the worst situations, where a casing was improperly cemented. Even then it is really unclear how bad the contamination was. Keep in mind there are over a million fracked wells in the USA. Hammond, P. A., Wen, T., Brantley, S. L., & Engelder, T. (2020). Gas well integrity and methane migration: evaluation of published evidence during shale-gas development in the USA. Hydrogeology Journal, 28(4), 1481-1502. |
|