Results 41 to 50 of about 2,349 (177)
Preserved precursors in Pumpherston shale ketogen revealed by oxidative degradation [PDF]
Journal of the Serbian Chemical Society, 2004 An optimised stepwise alkaline permanganate degradation was shown to have potentials in elucidating the genesis pathway and the origin of kerogens and, more specifically, to reveal preserved precursors in a kerogen matrix. Thus, Pumpherston shale kerogen,
Bajc Snežana +2 more
doaj +1 more source
Geochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.Abstract Natural hydrogen (H2) is a promising clean energy resource and a significant component of geothermal gases, yet its origins and release mechanisms remain poorly constrained. Here, we present geochemical and isotopic data (CO2, N2, Ar, H2, He, CH4, 3He/4He, δ13C‐CO2, and δ13C‐CH4) for hydrothermal gases from the Changning–Menglian suture (CMS),
Xuelian Huang +10 more
wiley +1 more source
Известия высших учебных заведений: Нефть и газ, 2015 The Bazhenian deposits which are developed by a perspective thermal method known as in-situ combustion process are described. This technology is analyzed as well as the fuel sources in case of its implementation in the reservoirs under study.
V. R. Uzbekov
doaj +1 more source
Archaeal Tetraether Lipids as Tracers for Past Marine Environmental Change
Paleoceanography and Paleoclimatology, Volume 41, Issue 7, July 2026.Abstract Archaea are single‐celled microorganisms that are abundant in marine environments and play a key role in the carbon and nitrogen cycles. Archaea can biosynthesize a wide variety of isoprenoid membrane lipids, including isoprenoid glycerol dibiphytanyl glycerol tetraethers (isoGDGTs).
Felix J. Elling +39 more
wiley +1 more source
Youqi dizhi yu caishouluThe adsorption behavior of methane in kerogen is of great significance for shale gas reserve evaluation and production prediction. However， there is still a lack of clear understanding of the hysteresis phenomenon and its micro-causes in the process of ...
TANG Haijun +6 more
doaj +1 more source
Sedimentology, Volume 73, Issue 4, Page 1225-1243, June 2026.ABSTRACT Thin ferruginous sandy crusts are common on top of sandstone beds in the Early Permian post‐glacial deposits of the Paraná Basin in southern Brazil. These crusts usually preserve wrinkle structures, suggesting that they might be a product of microbial mediation.
Patrícia Weschenfelder +2 more
wiley +1 more source
SOLVENT SWELLING OF KUKERSITE OIL SHALE MACROMOLECULAR ORGANIC MATTER IN BINARY MIXTURES: IMPACT OF SPECIFICALLY INTERACTING SOLVENTS; pp. 365–376 [PDF]
Oil Shale, 2014 The present work deals with the volumetric solvent swelling of the cross-linked macromolecular organic matter (kerogen) of Estonian kukersite oil shale in binary solvent mixtures.
JELENA HRULJOVA +4 more
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Asia-Pacific Journal of Chemical Engineering, Volume 21, Issue 3, May/June 2026.ABSTRACT To address the persistent exceedance of hydrogen sulfide (H2S) concentrations and the limited effectiveness of existing treatments in the Sickle Bay oil production area, this study deeply analyzes the mechanism of H2S generation in the Sickle Bay oil production area and proposes targeted prevention and control strategies. The results show that
Bo Lei +7 more
wiley +1 more source
Organic Geochemical Characterization and Exploration Prospects of Hydrocarbon Source Rocks in Nepal
Energy Science &Engineering, Volume 14, Issue 4, Page 1781-1794, April 2026.It provides a more detailed introduction to the current situation of oil and gas exploration in Nepal, as well as the properties and distribution characteristics of source rocks. ABSTRACT This study aims to evaluate the hydrocarbon generation potential and exploration prospects of hydrocarbon source rocks in the Dailekh to Dang–Tansen area of Nepal ...
Guoqiang Zhang +4 more
wiley +1 more source
Dynamic cycling and redox transformations of dissolved organic sulfur in the surface ocean
Limnology and Oceanography, Volume 71, Issue 4, April 2026.Abstract The marine dissolved organic sulfur (DOS) pool contains both labile metabolites that are rapidly cycled in the surface ocean and compounds that may persist for thousands of years in the marine environment. Here, we describe the sulfur speciation of marine solid‐phase extracted DOS (DOSSPE) from the North Atlantic surface ocean, revealing a ...
Molly A. Crotteau +7 more
wiley +1 more source