RE: Helios!9 May 2018 00:49
In 1979!
The Liscom Creek and Pumpkin Creek Fields of Custer and Powder River Counties, Montana produce naturally from the Shannon Member of the Eagle Formation. Eastward, the Shannon Member also produces naturally from the West Short Pine Hills Field in Harding County, South Dakota. The Judith River and Eagle Formations produce on the Cedar Creek Anticline of Fallon County, Montana, however, there is very little current activity in the Cedar Creek area for shallow gas production!
https://www.osti.gov/servlets/purl/5952918
Frack worked on Cedar Creek play in Eagle Formation!
http://www.searchanddiscovery.com/documents/2008/08176zander/ndx_zander.pdf
Dewatering process in the Antrim Gas Field!
Antrim gas drilling is almost a sure thing--it has a better than 90% success rate. Most of the Antrim gas is extracted in Antrim, Crawford, Montmorency, Oscoda and Otsego Counties. After a well is drilled, a six month dewatering period takes place. After that time the well begins to stabilize. The water (brine) is pumped back into the rock via a nearby well. The more water (brine) brought up, the more productive the well will be, because it means that more gas will eventually be released from the fractures in the shale.
http://geo.msu.edu/extra/geogmich/Oil&gas.html