We conducted simulation experiments on supercritical carbon dioxide (ScCO2)-H2O-rock interactions for caprock samples obtained from the Qinshui Basin, China, to explore the influence of carbon dioxide (CO2) injection on the sealing capability of deep…
Mesocarbon microbeads (MCMBs) are a valuable carbon material, and the production of this material highly depends on the reaction conditions and feedstock properties. In the present study, supercritical fluid extraction fractionation (SFEF) technology…
This study presents an experimental demonstration of seismic monitoring of CO2 geologic storage based on the observation of pore fluid substitution effects on elastic wave propagation along a core sample of Berea sandstone. Two-phase core flooding of…
The supercritical carbon dioxide extraction of bio-crude, produced by hydrothermal liquefaction of lignocellulosic biomass, was investigated for pressures and temperatures in the range 112400 bar and 40120 C, corresponding to solvent densities in the…
This paper experimentally investigated influential thermodynamic reservoir characteristics such as pressure, temperature, soaking time, core stimulation, number of cycles, shale particle size, and carbon dioxide phase during the cycling carbon…
In this study a novel sustainable method based on supercritical fluid extraction (SFE) method was developed for simultaneous extraction and fractionation of petroleum biomarkers. We herein proposed a two-step supercritical fluid extraction method for…
We investigate the potential for extracting heat from produced natural gas and utilizing supercritical carbon dioxide (CO2) as a working fluid for the dual purpose of enhancing gas recovery (EGR) and extracting geothermal energy (CO2-Plume Geothermal…
This paper experimentally investigated influential thermodynamic reservoir characteristics such as pressure, temperature, soaking time, core stimulation, number of cycles, shale particle size, and carbon dioxide phase during the cycling carbon…
Natural gas production has increased dramatically in recent years due to advances in horizontal drilling and hydraulic fracturing techniques. There are still challenges that must be addressed by industry to better utilize these abundant natural gas…
The growing interest in various applications of polyunsaturated fatty acids daily dietary requirements and demand has directed much attention on the industrial production of bio-oil from plant, animal, fungi, or algae sources. This work signifies…
Fish oil was extracted and simultaneously collected into six fractions based on molecular weight and the chain length of triglycerides in terms of fatty acid constituents without splitting of the triglycerides, using supercritical carbon dioxide…
Supercritical fluid extraction assisted by pressing (SFEAP) and supercritical fluid extraction (SFE) were compared in terms of extraction kinetics and extract fractionation using fennel. Extraction was performed at a pressure of 200 bar, a…
Bio-oil is a highly valuable product derived from biomass pyrolysis which could be used in various downstream applications upon appropriate upgrading and refining. Extraction and fractionation are two promising methods to upgrade bio-oil by…
The objective of this study was to evaluate the feasibility of supercritical oil extraction from Jatropha curcas L (JCL). The influence of the operating conditions on oil yield, free fatty acid content of JCL oil, and oil quality was examined, which…
Currently the extraction of valuable components from oils is of growing interest. Palm fatty acid distillate (PFAD) is a by-product from palm oil refining process which contains valuable minor components. This work investigated the extraction and…
A Venezuela Orinoco petroleum vacuum residue (VR) was subjected to supercritical fluid extraction fractionation (SFEF) and separated into 13 extractable fractions and an unextractable end-cut. Detailed molecular composition of polar heteroatom…
Heavy oils have high viscosity, density, and Conradson carbon residue and high contents of sulfur, nitrogen, oxygen, nickel, and vanadium, as well as asphaltenes, which can cause problems for producers, leading to catalyst deactivation and fouling…
Packed-column supercritical extraction (SCE), followed by low-pressure gas stripping, was used to produce a dimer-rich pitch fraction from an oligomeric petroleum pitch, Marathon M-50, of broad molecular weight distribution (MWD). Both…
A commercially produced petroleum pitch (M-50) consisting of PAH oligomers was fractionated via supercritical (SC)/dense-gas extraction, using two packed columns operating in series on a continuous basis. In the 1st column, toluene was used as the SC…
By using short path molecular distillation (SPD) and supercritical fluid extraction (SFE) techniques, petroleum waxes have been fractionated into different fractions. These wax fractions were analyzed for their composition and phase transitions by…
In the history of the evolution of the petroleum science and technology, the use of the true boiling point (TBP) distillation to establish the property-yield curve and the use of Universal Oil Products (UOP) K factor as a criterion of classification…
The influence of temperature, pressure, and solvent to oil ratio on phase compositions has been determined in a Hg-free high-pressure PVT instrument by using a whole phase sampling technique. Supercritical fluid extraction and fractionation (SFEF)…
Supercritical fluid extraction and fractionation (SFEF) has been used to separate a variety of petroleum residua and other heavy oils into narrow-cut fractions with total yields up to 75-90%. Any insoluble material, or end-cut, corresponds to the…
The purpose of this work was to provide Valuable data for the use of supercritical fluids in both surface and in situ bitumen and heavy oil recovery operations. Experiments were conducted using a semibatch extractor packed with a mixture of bitumen…
Supercritical fluid extraction and fractionation was used to prepare narrow-cuts from a variety of petroleum vacuum residua. The narrow-cuts were subjected to comprehensive characterization and solubility class separation into saturates, aromatics,…
Molecular size of heavy oil is crucial for catalyst design. The bulk-phase diffusivities of Dagang vacuum residue(DVR) and its fractions separated by supercritical fluid extraction and fraction (SFEF) were obtained by using a diaphragm cell, from…
Fish and fish by-products are the main natural source of omega-3 polyunsaturated fatty acids, especially EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid), both of them with a great importance in the food and pharmaceutical industries.…
Plants consist of triterpenoids such as phytosterols (PT) (C29H50O) with steroidal nuclei, including sitosterol, stigmasterol, brassicasterol and campesterol. They are hydrophobic but soluble in alcohol and other organic solvents and are isolated…
Hindered diffusion plays an important role in catalytic processing of residue and heavy oil because of large size molecules in these feedstocks. Vacuum residue of Athabasca oil sand bitumen was fractionated into 13 narrow fractions and an end-cut by…
The vacuum resid of a Canadian bitumen and the resid of its severely cracked product were separated into 16 and 11 fractions, respectively, by supercritical fluid extraction and fractionation with pentane, followed by a comprehensive analysis of the…
The boiling point of feedstock is an important process design parameter for petroleum system. In heavy petroleum fractions that boil above 524C, it is difficult to explicitly determine the boiling point due to limitation of analytical capability. In…
Supercritical CO2 flooding has been considered as a promising enhanced oil recovery (EOR) method because it can effectively improve the oil recovery and promote greenhouse gas sequestration. However, the solubility of different petroleum components…
In this study, we conducted a series of molecular dynamics simulations to investigate the effect of supercritical carbon dioxide (sc-CO2) on the interfacial and transport properties of brine/crude oil at the reservoir conditions. We also studied the…