Evaluation of methane sources in groundwater in northeastern Pennsylvania

Bibliographische Detailangaben
Veröffentlicht in:	Ground water. - 1979. - 51(2013), 3 vom: 03. Mai, Seite 333-49
1. Verfasser:	Molofsky, Lisa J (VerfasserIn)
Weitere Verfasser:	Connor, John A, Wylie, Albert S, Wagner, Tom, Farhat, Shahla K
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2013
Zugriff auf das übergeordnete Werk:	Ground water
Schlagworte:	Journal Article Research Support, Non-U.S. Gov't Carbon Isotopes Hydrocarbons Isotopes Methane OP0UW79H66

Beschreibung
Zusammenfassung:	© 2013, Cabot Oil and Gas Corporation. Groundwater © 2013, National GroundWater Association. Testing of 1701 water wells in northeastern Pennsylvania shows that methane is ubiquitous in groundwater, with higher concentrations observed in valleys vs. upland areas and in association with calcium-sodium-bicarbonate, sodium-bicarbonate, and sodium-chloride rich waters--indicating that, on a regional scale, methane concentrations are best correlated to topographic and hydrogeologic features, rather than shale-gas extraction. In addition, our assessment of isotopic and molecular analyses of hydrocarbon gases in the Dimock Township suggest that gases present in local water wells are most consistent with Middle and Upper Devonian gases sampled in the annular spaces of local gas wells, as opposed to Marcellus Production gas. Combined, these findings suggest that the methane concentrations in Susquehanna County water wells can be explained without the migration of Marcellus shale gas through fractures, an observation that has important implications for understanding the nature of risks associated with shale-gas extraction
Beschreibung:	Date Completed 16.12.2013 Date Revised 21.10.2021 published: Print-Electronic Citation Status MEDLINE
ISSN:	1745-6584
DOI:	10.1111/gwat.12056