Petroleum hydrocarbons are a class of anthropogenic compounds including alkanes, aromatic hydrocarbons, resins, asphaltenes and other organic matters, and soil pollution caused by petroleum hydrocarbons has drawn increasing interest in recent years.…
Eocene and Lower Oligocene rocks are potential source rocks for crude oil accumulations in the Hungarian Palaeogene Basin. To enhance the understanding of the hydrocarbon system, this study (i) assesses the petroleum potential of Palaeogene…
Several studies have been performed to model the storage and transport in organic matter present in shale gas. However, the unconventional formation does not only contain organic matter but also inorganic mineral matrix. The studies necessitated by…
A better understanding of the nature of crude oil compounds that preferentially interact with certain types of solids is essential to visualize solutions to challenges in oil fields, such as enhancing the oil recovery factor, via wettability…
Recently, there has been an interest in solvent extraction for extraction organic matter from oil shale. Heating of oil shale in an inert atmosphere facilitated the extraction of the organic matter by solvent extraction. In this research, shale oil…
Investigation on the use of diamondoids to assess the extent of thermal maturity, depositional environment, and origin of Niger Delta source rocks was carried out. This was done to evaluate the significant of diamondoids in petroleum exploration in…
Oligocene deep syn-rift lakes in the Gulf of Tonkin, Vietnam, represent exceptional paleoenvironmental archives, but their use for unravelling the regional paleoclimatic development has been hindered by poor dating. Here we present a high-resolution…
Iron (Fe) isotope is an effective tool for tracing Fe transformation, migration, and biogeochemical cycling in the Earth's surface system. In this study, the Fe content and stable isotope composition (56Fe/54Fe) in two Gleysol profiles (M1 and M2)…
In this work, Huadian oil shale was extracted by water at 350, 365, and 385 C with a time series (2-100 h) under a closed system to better investigate the carbon isotope fractionation character and its use in predicting the oil recovery rate (ORR).…
The Marathon 1 Mesquite well was drilled in Hamilton County, Texas, targeting the Barnett Shale with late oil window maturity. Combining a large suite of petrologic and high-resolution organic geochemical analyses on 120 core samples, we have been…
Spilled oil treated with Corexit dispersant can cause unintended impacts on marine environment systems including altering marine organic matter dynamics
The study employed thirteen (13) crude oil samples from thirteen (13) producing wells, with the aim of examining the source of organic matter and the paleoenvironment of deposition. The crude oils were deasphaltened and the maltene fraction…
Lacustrine shale from Madongshan Formation in Liupanshan basin has been the important target strata for shale gas exploration in northwest China. However, the system cognition in generation, reservoir conditions and geological gas-in-place (GIP)…
Injection of CO2 into shale reservoirs to enhance gas recovery and simultaneously sequester greenhouse gases is a potential contributor towards the carbon-neutral target. It offers a low-carbon, low-cost, low-waste and large-scale solution during the…
Biogeochemical gradient forms in vadose zone, yet little is known about the assembly processes of microbial communities in this zone under petroleum disturbance. This study collected vadose zone soils at three sites with 0, 5, and 30 years of…
The generation and migration processes, as well as the influence of secondary processes, on oil and natural gas accumulated in Lower Cretaceous-lower Miocene strata of the central part of the Ukrainian outer Carpathians are discussed. Type II and…
Five model compounds with representative chemical structures were selected for use in simulation experiments of pyrolytic gas production. The gas production and isotopic fractionation characteristics were observed and analyzed. Then, the factors…
Although the progress of high resolution mass spectrometry in the past decade has enabled the molecular characterization of dissolved organic matter (DOM) in water as a whole, fractionation of DOM is necessary for a comprehensive characterization due…
The Bongor Basin is a Meso-Cenozoic intracontinental passive rift basin developed under the influence of the Central African shear zone. It is dominated by the Lower Cretaceous source-reservoir-cap assemblage. The basin is under-explored overall, and…
Petroleum systems are inherently complex, comprising multiple components and processes, which variably interact in space and time to form petroleum accumulations. Improved understanding of these complex systems requires a holistic approach of…
The article considers formation conditions of oil and gas potential and evaluated the prospects of searching of oil and gas accumulations in deep-lying (5 km and more) sediments of the south-eastern part of the Volga-Ural oil and gas province…
In this work, on the example of rock samples from Permian deposits of the heavy oil field from the depth interval 117.5–188.6 m, a comprehensive study of the composition of oil-saturated rocks, as well as thermogravimetric parameters and kinetics of…
In this work, on the example of rock samples from Permian deposits of the heavy oil field from the depth interval 117.5–188.6 m, a comprehensive study of the composition of oil-saturated rocks, as well as thermogravimetric parameters and kinetics of…