Sentences with phrase «fracture systems reported»

Methane migration through the 1 - to 2 - km - thick geological formations that overlie the Marcellus and Utica shales is less likely as a mechanism for methane contamination than leaky well casings, but might be possible due to both the extensive fracture systems reported for these formations and the many older, uncased wells drilled and abandoned over the last century and a half in Pennsylvania and New York.

«Methane migration through the 1 - to 2 - km - thick geological formations that overlie the Marcellus and Utica shales is less likely as a mechanism for methane contamination than leaky well casings, but might be possible due to both the extensive fracture systems reported for these formations and the many older, uncased wells drilled and abandoned over the last century and a half in Pennsylvania and New York [where they did their study]... More research is needed across this and other regions to determine the mechanism (s) controlling the higher methane concentrations we observed.»

Not exact matches

Equipped with this new power, the police and community were able to develop a reporting system that would help stop the lateral violence which continued to fracture the community.