Where's the gas

Looking at some well reports out of Grant County thats shows upper and lower intervals of the MS the upper is always by far the thickest. What inteverval is the production at? Sorry to ask such a basic question but I am not familiar with the drilling operations in the MS just an out of state landowner.

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Permalink Reply by Tom Copley on September 17, 2009 at 3:17pm
Are you talking about the upper and lower Devonian shale? The Marcellus is in the Hamilton Group and at the bottom of this middle layer of Devonian shale. It has three main subdivisions:
  • Cherry Valley Limestone (differently named in various locations)
  • Oatka Creek Shale
  • Union Springs Shale
The average thickness is around 125 feet, although in some areas such as Bradford and Susquehanna Cos., PA it can run as thick as 300 feet. I would say the entire Marcellus shale formation is prospective for nat gas, but would be happy to be otherwise informed. --Tom
Permalink Reply by Catfish on September 17, 2009 at 3:27pm
The reports call it marcellus shale showing an upper and lower interveral seperated by other formations. I will post a link friday.
Permalink Reply by Catfish on September 18, 2009 at 9:48am

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