Wednesday, December 14, 2011 4:45:32 AM
Also to be specific, to this area of southern Pennsylvania, the Marcellus formation descends to depths of over 8,900 ft below the surface in southern Pennsylvania. That is many thousands of feet below any groundwater aquifer, and there are the thick layers of the Mahantango formation and Tully Limestone above it.
So that shuts down your statement that it's too close to the groundwater.
Btw, the Mahantango formation is sandstone and siltstone which is `caprock`. Link
It might not be the `seal` you ordinarily look for, but it is suitable for that purpose.
Wednesday, December 14, 2011 4:37:13 AM
Hydraulic fracturing enables the production of natural gas and oil from rock formations deep below the earth's surface (generally 5,000-20,000 feet). At such depth, there may not be sufficient porosity and permeability to allow natural gas and oil to flow from the rock into the wellbore at economic rates. - Wikipedia
Tuesday, December 13, 2011 10:14:31 PM
Dude, I’m done here, this thread is old and it’s wasting my time. I have to get up tomorrow and find some oil and gas. Thankfully for you and society in general, it’ll be done by people like me, who know what the hell they’re talking about.
In the meantime, the folks at CERN are having trouble pinning down the definitive evidence of the Higgs-boson. I suggest you spend your day tomorrow on Google so you can teach those PhD particle physicists what they’re doing wrong.