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Directional drilling and hydraulic-fracturing technologies are dramatically increasing natural-gas extraction. In aquifers overlying the Marcellus and Utica shale formations of...
A geochemical context for stray gas investigations in the northern Appalachian Basin: Implications of analyses of natural gases from Neogene-through Devonian-age strata As the...
Dataset Size: 1,007.87 KB
Cleavage duplexes are zones of platy, spaced cleavage, that either parallel bedding or ramp through shale sections. Examples are 2-60 m thick. The cleavage within the zones is...
Dataset Size: 1.959 MB
Natural Gas Plays in the Marcellus Shale: Challenges and Potential Opportunities The U.S. has abundant natural gas resources within the Barnett Shale, Haynesville/Bossier Shale,...
Dataset Size: 1.432 MB
Brines having moderate to high salt content (up to 343 grams per liter [g/L]) occupy most pore spaces in rocks below a depth of a few thousand feet in Pennsylvania and are...
Dataset Size: 3.565 MB
Increased stray gas abundance in a subset of drinking water wells near Marcellus shale gas extraction Horizontal drilling and hydraulic fracturing are transforming energy...
Dataset Size: 3.111 MB
In recent years, shale gas formations have become economically viable through the use of horizontal drilling and hydraulic fracturing. These techniques carry potential...
Dataset Size: 1.817 MB
Large quantities of highly saline brine flow from gas wells in the Marcellus Formation after hydraulic stimulation (‘‘fracking’’). This study assesses the composition of these...
Dataset Size: 738.933 KB
A PowerPoint by John A Harper and Jaime Kostelnick depicting the drilling and completion stages of hydraulic fracturing.
Dataset Size: 720.462 KB
A PowerPoint presentation by John A Harper about the Marcellus Shale.
Dataset Size: 8.099 MB
The Council Run field of north central Pennsylvania is one of the most productive natural gas fields in the central Appalachian basin. The field is enigmatic because of its...
Dataset Size: 4.83 MB
Methane has been found as a dissolved gas in numerous ground-water samples from water wells in West Virginia. Methane (CH4) is a colorless, odorless, tasteless gas that can...
Dataset Size: 2.617 MB
A USGS study setting a basline for groundwater measures in Sullivan County, Pennsylvania.
Dataset Size: 455.777 KB
Dataset Size: 2.938 MB