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Shale oil samples were obtained from the pyrolysis of six Chinese representative oil shales obtained from different locations and were divided into <300°C and >300°C fractions according to their boiling points. Chinese shale oils were similar in their high atomic H/C ratio. Huadian shale oil possessed the lowest density and viscosity. <300°C fractions of shale oils were subjected to acidic/basic...
Structural features of >300°C fractions of six Chinese shale oils, namely the Huadian, Wangqing, Fushun, Longkou, Maoming and Yaojie oil, have been characterized using 1H nuclear magnetic resonance, 13C nuclear magnetic resonance and Fourier transform infrared techniques. Based upon the results obtained from 1H nuclear magnetic resonance and 13C nuclear magnetic resonance, the distribution of various...
The adsorption behaviors of methane (CH4), carbon dioxide (CO2) and their mixtures are vital to understand the process of CO2 sequestration and shale gas exploitation. In this work, four realistic kerogen models with different maturities (immature (IIA), beginning of oil window (IIB), middle of oil window (IIC), postmature (IID)) were built by the molecular dynamics (MD) method. The adsorption characteristics...
Electrical discharges triggered by microwave-metal interactions are important phenomena in microwave heating processes with the generation of plasma. In this study, microwave-metal (MW-m) discharge was developed for tar destruction. Toluene was used as a tar model compound. Uniform tungsten electrodes was adopted and optimized to provide a fast-ignition, relatively-stable and sustainable discharge...
In this study, several strains were investigated to evaluate their ability to produce 2,3-butanediol (2,3-BD) from cheese whey powder (CWP). The capacity of these strains for 2,3-BD production was assessed in lactose medium and two strains Klebsiella pneumoniae CICC 10781 and K. oxytoca CICC 21518 were selected. Fully assessing the fermentation performances indicate that CICC 10781 was more suitable...
This paper aims to analyze the effects of mineralogy on petrophysical properties and evaluate the performance of eight permeability estimation models in tight oil sandstones. The results include mineralogy, pore size distribution, porosity, and permeability. The evaluated eight permeability models are Purcell, Winalnd, Swanson, Thomeer, Wells-Amaefule (W-A), Katz-Thompson (K-T), Pittman and Dastidar...
Tight oil reservoirs typically show a wide pore size distribution with pore sizes ranging from several nanometers to several hundred microns, requiring a combination of several techniques to properly characterize the pore structures. In this paper, scanning electron microscopy, pressure-controlled porosimetry and rate-controlled porosimetry were applied to investigate the pore systems of a tight sandstone...
In the present work, thermogravimetric analysis was employed to investigate the interactions between oil shale and its semi-coke during co-combustion process. During the test, the blends of semi-coke and oil shale were prepared at different blending ratios of 1:0, 4:1, 3:1, 2:1, 1:1, and 0:1. The results indicated some interactions were detected between oil shale and semi-coke during the tests. The...
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