The fact that the Fifth Assessment Report (AR5) of the Intergovernmental Panel on Climate Change (IPCC) states that natural gas power technology is a ‘bridge technology’ does not necessarily imply that shale gas will play any significant role in curbing GHG emissions. Indeed, we note that the median scenarios presented in AR5 for stabilising atmospheric concentrations between 430ppm and 530ppm ...

© The Ecological Society of America www.frontiersinecology.org N gas drilling has dramatically expanded with advances in extraction technology and the need for cleaner burning fuels that will help meet global energy demands. Natural gas is considered a “bridge fuel” to renewable energy resources because its combustion releases fewer contaminants (eg carbon dioxide [CO2], nitrogen oxide [NOx], s...

Shale gas comprises an increasing fraction of the US natural gas supply, but the environmental implications of shale gas extraction—a process that includes horizontal drilling and hydraulic fracturing—remain uncertain. Expanding their previous study of methane gas contamination in private drinking water wells near active drilling operations in the Marcellus shale region of northeastern Pennsylv...

Few attempts have been made to model shale gas reservoirs on a compositional basis. Multiple distinct micro-scale physical phenomena influence the transport and storage of reservoir fluids in shale, including differential desorption, preferential Knudsen diffusion, and capillary critical effects. Concerted, these phenomena cause a measureable compositional change in the produced gas over time. ...

In this paper, the effect of fluidized bed temperature on primary fragmentation of Huadian oil shale was investigated experimentally in thermal state using a small-scale fluidized bed with N2 as fluidizing gas. The fluidized-bed temperatures changed from 600 °C to 1000 °C. Experimental results indicate that the fluidized bed temperature is an important factor of primary fragmentation of oil sha...

Hundreds of organic chemicals are used during natural gas extraction via high-volume hydraulic fracturing (HVHF). However, it is unclear whether these chemicals, injected into deep shale horizons, reach shallow groundwater aquifers and affect local water quality, either from those deep HVHF injection sites or from the surface or shallow subsurface. Here, we report detectable levels of organic c...

Hydraulic fracturing in shale gas reservoirs has usually resulted in complex fracture network. The results of micro-seismic monitoring showed that the nature and degree of fracture complexity must be clearly understood to optimize stimulation design and completion strategy. This is often called stimulated reservoir volume (SRV). In the oil & gas industry, stimulated reservoir volume has made th...

The attitudes of Susquehanna River stakeholders regarding natural gas hydraulic fracturing (fracking) in the Marcellus Shale region reflect differing concerns on economic, social, and environmental issues based on gender, education level, and income. The focus on the U.S. State of Pennsylvania section of the Susquehanna River derives from the U.S. States of New York and Maryland, neighbors of P...

The Akinbo Formation comprises a sequence of mostly dark, pale-greenish grey, laminated shale, slightly glauconitic shale, sandy shale with subordinate claystone lenses. Selected subsurface samples of the shaly facies as penetrated by Akinside 1582 well in eastern Dahomey basin. were investigated by sedimentological. mineralogical and geochemical parameters to ascertain the hydrocarbon potentia...