Sentences with phrase «through fracture systems»
Such leaks could occur at hundreds of meters underground, with methane passing laterally and vertically through fracture systems.
http://www.pnas.org/
The reduced pressure following the fracturing activities could release methane in solution, leading to methane exsolving rapidly from solution (29), allowing methane gas to potentially migrate upward through the fracture system.
Not exact matches
In Paul Tough's book, Whatever It Takes, he takes the reader on a journey through Harlem, New York's fractured public education system, and introduces a remarkable person with a solution to fix it.
The new pumps are critical for «enhanced geothermal systems,» in which energy is produced by fracturing dry rock at the bottom of a deep hole and then circulating water through the cracks to generate steam.
Jennifer Allora & Guillermo Calzadilla (born 1974, USA and 1971, Cuba) identify and stress hairline fractures in societal systems through performance, sculpture, sound, video and photography.
«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.»
A production well is dug to intersect the fractures and water is circulated through this system.
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.