Unconventional shale reservoirs have greatly contributed to the recent surge in petroleum
production in the United States and are expected to lead the US oil production to a historical …

Our environment is essential for not only the quality, but also the persistence of life on Earth.
Three of the most pressing environmental issues facing modern society are climate change …

FTIR absorbance signals in kerogens and macerals were evaluated as indices for thermal
maturity. Two sets of naturally matured type-II kerogens from the New Albany Shale (Illinois …

Understanding organic matter properties in terms of maturity and production potential are
crucial for the initial assessment of unconventional plays. This is important since the amount …

Unconventional petroleum resources, particularly in shales, are expected to play an
increasingly important role in the world's energy portfolio in the coming years. Nuclear …

We have used advanced and quantitative solid-state nuclear magnetic resonance (NMR)
techniques to investigate structural changes in a series of type II kerogen samples from the …

Kerogen is the most abundant form of naturally occurring organic matter in organic-rich
shale, and it can affect the macro-mechanical characteristics of shale reservoirs during the …

The molecular structural information on a kerogen isolated from Huadian oil shale was
obtained using solid-state 13C nuclear magnetic resonance (NMR), X-ray photoelectron …

Unconventional petroleum resources present in shales have recently seen increased
development due to growing demand for energy worldwide, declining conventional …

Most of the organic nitrogen (Norg) on Earth is disseminated in crustal sediments and rocks
in the form of fossil nitrogen-containing organic matter. The chemical speciation of fossil …