Abiotic synthesis has been hypothesized as a mechanism for occurrences of hydrocarbon
gases with atypical molecular and isotopic compositions. This paper provides biotic …

Naturally occurring hydrocarbon fluids in sedimentary basins have economic, geological
and environmental significance. Connecting sedimentary basin temperature-time evolution …

The distribution of stable isotopes in organic compounds within geochemical systems
reflects the reactions they undergo, which are often kinetically governed and can be …

The Middle Devonian Marcellus Formation of North America is the most prolific hydrocarbon
play in the Appalachian basin, the second largest producer of natural gas in the United …

Shale gas with carbon isotope reversal (δ 13 C methane> δ 13 C ethane), as a promising
indicator for resource “sweet-spot”, tends to occur at high-over maturity shales with high gas …

Numerous studies have been conducted on the isotopic geochemical characteristics of
shale gas. However, a systematic study of the relationship between the isotopic …

To verify recent single-well data from the Sichuan Basin, we analyzed the molecular and
isotopic composition of late-mature Longmaxi shale gases from the southwestern portion of …

Abiotically synthesized hydrocarbons are significant in the fields of astrobiology, biosphere,
energy, environment, and geology. Abiotic hydrocarbons have never been unambiguously …

This work investigated the kinetic fractionation of clumped isotopes (13 CH 3 D and 12 CH 2
D 2) during thethermal generation and hydrogen exchange of methane. Kinetic reaction …

We have reassessed the stable carbon isotope systematics of methane (C 1), ethane (C 2),
and propane (C 3) in more than 500 natural gas samples from low-permeability hydrocarbon …