In keeping with the world trends, ONGC Assam Asset is gradually embracing green chemistry in its chemical treatments and processes. Flowing well fluids from reservoir to group gathering stations (GGS) and their transportation to refineries through…
Sustainable treatment of petroleum oil sludge still remains as a major challenge to petroleum refineries. Bioremediation is the promising technology involving bacteria for simultaneous production of biosurfactant and followed by degradation of…
It is shown that associated petroleum gas (APG) and the product of intrastratal transformation of air (by high-pressure air injection technology) are suitable for oil displacement from low-permeability, high-temperature light oil reservoirs. It was…
The structural and rheological properties of resin-free model petroleum mixtures (MPM) with an asphaltene content of 0 to 6 wt % and the same mixtures with added 3.85 wt % petroleum resins have been investigated. The composition of the mixtures…
Abstract: Diamondoids were separated from protodiamondoids (precursors of diamondoids)in a saturated fraction (150350C) of crude oil by thermal diffusion. It wasfound that in the course of thermal diffusion separation,C10C13…
Abstract: The process of deasphalted oil thermal cracking in the presence of catalysts formed from oil-soluble Fe, Mo, Ni, and Co acetylacetonates is studied. It is shown that the used catalysts substantially change physicochemical properties of the…
Abstract: Influence of the WC/NiCr additive on the cracking of maltenes of naphthenic crude oil from the Usa oil field has been studied. Maltene cracking was carried out at 450 for 2 h in the isothermal mode. Material balance of cracking, the…
Resins of Usa oil and their four fractions obtained by column chromatography have been studied. Changes in the structural parameters of the resins and the product composition for thermolysis of the fractions at temperatures of 200245 and 450495C have…
Conversion of olefin-rich side streams of petroleum distillate cracking operations, pyrolysis gasoline (pygas), to hydrocarbon resins (HRs) represents a promising technology to upgrade the pygas byproduct and facilitate pygas valorization. Several…
The present work proposes a novel system which integrates high-sulfur petroleum coke chemical looping gasification (CLG) and sulfur recovery. Depending on the gas-solid reaction, CLG process has the ability to control the reaction pattern to obtain…
Abstract: The thermal transformations of components of the residue (boiling point above 350C) of Zuunbayan heavy, high-wax oil (Mongolia) in the presence of cogeneration plant flyash ferrospheres and sunflower oil have been studied. The use of the…
Abstract: The paper reports the results of the fractional extraction of petroleumasphaltenes using a toluene/acetone mixture. This method was shown to beeffective in extracting polyaromatic structures with various properties and inpredicting a number…
Abstract: The state of the art in the field of studying catalysts for hydrogenation/dehydrogenation of organic substrates as potential components of modern hydrogen storage systems based on liquid organic hydrogen carriers is analyzed. The ways to…
In this work, NiFe nanocatalysts with different molar ratios 1:0.33, 1:1 and 1:3 were synthesized by a modified inverse microemulsion method at Soft Chemistry conditions in order to apply them to heavy crude oil (HCO) in situ hydroprocessing and to…
Amphiphilic poly(ionic liquids), PILs, derived from natural products attracted great attention as a green chemical in the field of the surface chemistry and petroleum industry. In the present work, new surface active PILs were synthesized from…
Abstract: A comparative analysis has been made of the physicochemical properties and structural-group composition of acids isolated from crude oils of the Anastasievsko-Troitskoe (Krasnodar krai, Russia) and Naftalan (Azerbaijan) oil fields. For each…
Abstract: Molecular-mass distribution curves of native nanoasphaltenes in the form of fractograms for a significant sample of crude oils have been obtained using the thermal field-flow fractionation of asphaltenes, and a multidimensional analysis of…
Abstract: The paper describes an investigation of structural and geochemical properties of genetically similar crude oils from the Turija-sever field located in the South-Eastern Pannonian Basin, Serbia. Samples from 56 wells were examined by…
Abstract: The modern concepts of crude oils and refinery products as petroleum disperse systems are surveyed, as well as the related possibilities of optimizing crude oil refining processes. Through the optimal blending of components, it is possible…
Abstract: Specific features of the distribution of vanadium and nickel duringfractionation of heavy oil resins were examined using the example of heavysulfurous oils from the Permian and Carboniferous deposits of the Volga-Uralsoil and gas basin…
The physical chemistry of the brine-crude oil interface is immensely complex as a result of the complexity of the crude oil itself, and access to the detailed phenomena occurring at this interface is extremely difficult. Understanding these phenomena…
Abstract: The influence and effectiveness of technologies aimed at enhancing oil recovery on changes in the composition and properties of the extracted heavy oil from the Usa field have been studied. The injection into the reservoir of oil-displacing…
Abstract: Asphaltene is the heaviest organic compound in crude oils that its precipitation and deposition cause many negative effects on oil production such as an overall decrease in production rate and an increase in operating costs. Nanoparticle…
Asphaltenes are regarded as troublesome components of crude oils as their precipitation and deposition inside production wells and downstream infrastructure often result in a reduction of production capacity and, in critical cases, production…
Abstract: General features of the distribution of vanadium and nickel in the products of two-step solvent fractionation of asphaltenes have been using the exampley of heavy crude oils from various fields of the VolgaUrals oil-and-gas basin (Russia).…
Scattering techniques are invaluable for the study of self-association and structure of soft systems. The properties and phase behavior of petroleum asphaltenes have long been investigated using small-angle X-ray and neutron scattering. However,…
In keeping with the world trends, ONGC Assam Asset is gradually embracing green chemistry in its chemical treatments and processes. Flowing well fluids from reservoir to group gathering stations (GGS) and their transportation to refineries through…
Increasing soil petroleum hydrocarbons (PHs) pollution have caused world-wide concerns. The removal of PHs from soils mainly involves physical, chemical, biological processes and their combinations. To date, most reviews in this field based on…
Injection of water with a designed chemistry has been proposed as a novel enhanced-oil-recovery (EOR) method, commonly referred to as low-salinity (LS) or smart waterflooding, among other labels. The multiple names encompass a family of EOR methods…
Increasing soil petroleum hydrocarbons (PHs) pollution have caused world-wide concerns. The removal of PHs from soils mainly involves physical, chemical, biological processes and their combinations. To date, most reviews in this field based on…
Sustainable treatment of petroleum oil sludge still remains as a major challenge to petroleum refineries. Bioremediation is the promising technology involving bacteria for simultaneous production of biosurfactant and followed by degradation of…
We suggest two new thermodynamic models for the adsorption of ions to the brine/carbonate and brine/ crude oil interface. We calibrate the model parameters to the ionic adsorption and zeta potential data. We then investigate the effect of the rock…
We suggest two new thermodynamic models for the adsorption of ions to the brine/carbonate and brine/ crude oil interface. We calibrate the model parameters to the ionic adsorption and zeta potential data. We then investigate the effect of the rock…
Abstract: The presented review considers the currently relevant methods for studying petroleum porphyrins. For this purpose, the experimental approaches used during the investigation of the structure, concentration, and properties of metal complexes…
Abstract: General features of the distribution of vanadium and nickel in the products of two-step solvent fractionation of asphaltenes have been using the exampley of heavy crude oils from various fields of the VolgaUrals oil-and-gas basin (Russia).…
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…
Asphaltenes are among the most challenging components in petroleum processing because they contain high amounts of heteroatoms (i.e., S, N, O, V, and Ni) thought to be responsible for strong aggregation tendencies, precipitation, and fouling…
Asphaltenes and resins of crude oil from the Usa oil field have been subjected to fractionation. The asphaltenes have been separated into fractions by fractional precipitation with chloroform/hexane solvent blends in the ratios of 30/70, 30/75, and…
In accordance with the asphaltene fractionation scheme proposed, an oil residue with a boiling point above 250C is mixed with acetone (acetone/residue ratio of 3: 1) and divided into two parts containing mainly high-molecular-mass (resin-asphaltene…
Abstract: The review discusses currently relevant methods for studying petroleum resins. A significant proportion of the research work deals with the study of resins in heavy oils, for which experimental approaches have been systematized and the…
Comprehensive two-dimensional gas chromatography coupled to time-of-flight mass spectrometry (GC. . GC/TOFMS) has shown great skill in analyzing complex mixtures such as fossil fuels, especially for compounds at low concentrations. The analysis of…
Asphaltenes from four crude oils were fractionated by precipitation in mixtures of heptane and toluene. Solubility profiles generated in the presence of resins (1:1 mass ratio) indicated the onset of asphaltene precipitation occurred at lower toluene…
Characterization of kerogen, the insoluble organic fraction of sedimentary rocks, is of key importance in investigations of the geochemistry of ancient depositional systems, paleo climates, basin thermal history, and petroleum generation systematics.…
By the extraction, adsorption chromatography, it has been shown that asphaltene macromolecules from Usa crude oil contain compounds with a relatively low molecular mass represented by normal and branched alkanes
Variants of the single-step processing of unfractionated crude phenols by phenol - formaldehyde or oxidative oligomerization and/or complexation with organic substrates have been proposed. These treatments result in a significant increase in the…
The K Field, offshore Taiwan, produces mainly gas along with small amounts of condensates and paraffinic oils. Detailed geochemical analyses of 21 fluids have shown that they belong to a single family generated from mixed organic matter derived from…
Northwest Java Basin oils, largely derived from the fluvial-deltaic to nearshore marine Talangakar formation of Oligocene to Early Miocene, range from heavy oils to extremely light oils and retrograde condensates, with API gravities of a suite of…
In this research, a process is discussed for upgrading reformate and power former in Iraq's Al-Doura refinery, by reducing the amount of benzene in the gasoline product with simultaneous reduction in the gasoline's ASTM distillation end point. The…
A mesophilic enrichment culture of sulphate-reducing bacteria isolated from the water phase of a North Sea oil tank using oil from the same tank as sole source of carbon and energy specifically depletes certain C1–C5 alkylbenzenes in crude oil during…
Corrosion of stainless steels in atmospheric crude oil distillation column was studied in presence and absence of the ceramic coatings at different temperatures and exposure times using the weight loss technique. Thermal spray coating method was…