Natural gas produced from the well contains hydrocarbons, carbon dioxide, hydrogen sulfide, and water together with many other impurities. Raw natural gas after transmission through a network of gathering pipelines therefore must be processed in a…
Innovations in membranes for natural gas processing frequently consider ideal separation performance as the defining success metric for removing carbon dioxide (CO2) from methane (CH4). However, realistic natural gas feeds are complex mixtures…
CO2 flooding is an effective technology to improve oil recovery. However, because the foam layer produced in the actual production may affect the gas-liquid separation effect, a set of equipment for analyzing the foaming behavior of dissolved gas…
Hydrogen blending has significant influences on the characteristics and evolution of safety accidents of natural gas. In this study, the numerical investigation is performed to reveal the leakage and diffusion characteristics of hydrogen-blended…
Offshore natural gas represents a significant portion of global natural gas reserves. Processing of natural gas is essential for gas upgrading before pipeline transportation and utilization. In this work, a phenomena-based approach to propose more…
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…
A recently developed extrography separation method fractionates petroleum asphaltenes based on their ionization efficiency, which correlates with polarity, aggregation tendency, and asphaltene structure (single-core or island versus multicore or…
Stable carbon and hydrogen isotope ratios of individual n-alkanes and acyclic isoprenoids are important tools in petroleum geochemistry. However, the analysis requires baseline separation and peak profiles using gas chromatographyisotope ratio mass…
Processing of light tight oils (LTOs) and their blends is challenged with their high fouling propensity. In this study, their fouling potential was attributed to fractions from centrifuge-accelerated settling. A small solid fraction comprising lower…
The removal of acidic gases and impurities from gas mixtures is a critical operation in the oil and gas industry. Several separation techniques, e.g., cryogenic fractionation, polymeric membranes, zeolites, and metalorganic frameworks, are employed…
About 500 metal-organic frameworks (MOFs) were subject to in silico screening for helium separation from natural gas. The equimolar mixture of helium and nitrogen was selected based on the available technical data for operating units. Geometry-based…
As a cleaner, cheaper and globally distributed fuel, methane (CH4) has considerable environmental, economic, and political advantages over petroleum as a source of energy for the transportation sector. However, it is still challenging to achieve…
Polymers of intrinsic microporosity have attracted comprehensive attention in membrane-mediated gas separation because of their rigid and contorted structure that facilitates well-defined microporosity for fast and selective gas transport. We report…
Natural gas is an environmentally friendly energy resource and it is of central importance to remove acid gases (e.g. H2S and CO2) from natural gas. In this study, we computationally screen 6013 metal-organic frameworks (MOFs) for the simultaneous…
Settling tanks have been widely applied to water and sand separation from crude oil. At present, the related studies on the effect of water and sand separation in settling tanks mainly focus on computational simulation methods. This paper puts…
The rapid and effective separation of high-viscosity heavy crude oil from seawater is a worldwide challenge. Herein, an ultralow density, photothermal, superhydrophobic, and thermally conductive polyurethane/polyaniline/hexagonal boron…
A new homopolymer, 6FDA-CARDO(t-Bu), was prepared from 6FDA-CARDO through one-step chemical modification by adding bulky tert-butyl groups, using Friedel-Crafts alkylation. The incorporation of the bulky groups led to a significant increase in the…
In this work, a mixed absorbent of an ionic liquid (IL) and triethylene glycol (TEG) is first proposed for natural gas (NG) dehydration. The hydrophilic [EMIM][BF4] is selected as an appropriate IL composition from 240 potential candidates by…
Efficient extraction of crude oil, the major energy resource of current concern and high demand worldwide, is of paramount importance in both energy and environmental fields. However, it remains a great challenge to separate the crude oil-in-water…
The separation technology of carbon dioxide (CO2) is a key step to achieve high efficient carbon capture and storage targets. In the present study, we propose a new concept to remove CO2 from the offshore natural gas industry, which utilises the…
Mixed matrix membranes (MMMs) have received worldwide attention for natural gas purification due to their superior performance in terms of permeability and selectivity. The zeolitic imidazole framework-8 (ZIF-8) blended polysulfone (PSf) membranes…
Centrifugal Fluid Separation technology, in particular Supersonic Gas Separation (SGS), is one of the potential technologies considered for offshore CO2 capture. SGS has advantages in terms of CAPEX, hydrocarbon losses, footprint, tonnage and power…
Pressure energy recovery is one of the main advantages of a supersonic separator. However, the pressure energy recovery process can cause droplet evaporation in the divergent section, which will reduce the liquefaction efficiency of the nozzle. This…
Rubbery siloxane membranes are utilized in industry for the rejection of nitrogen and for the concentration of heavy hydrocarbons in the membrane permeate stream. In this work, modified crosslinked siloxane terpolymer…
Supersonic separator is investigated via process simulation for treating CO2 rich (>40%) natural gas in terms of dew-points adjustment and CO2 removal for enhanced oil recovery. These applications are compared in terms of technical and energetic…
Natural petroleum sulfonates (PS) was separated, purified and divided into several fractions by a new method liquid-liquid & soxhlet extraction. The effects of heating time, volume ratio of extractants (isopropanol aqueous solution-50/50 (by volume)…
The precise chromatographic isolation of saturates is a common problem of the characterization of highly paraffinic petroleum based samples. Incomplete elution of high-molecular-weight saturates (HMWS) or contamination of saturates by aromatics can…
This paper presents the experimental results for the performance of a direct-injection natural gas marine engine with different multiple injection strategies. In order to investigate the effects of natural gas post injection proportion and natural…
Petroleum sulfonates are widely used in chemical flooding in China. The samples are complicated and not all the fractions are effective. To recognize effective fraction with excellent interfacial activity and emulsifying property, a preparative…
Processing of light tight oils (LTOs) and their blends is challenged with their high fouling propensity. In this study, their fouling potential was attributed to fractions from centrifuge-accelerated settling. A small solid fraction comprising lower…
In this work, a mixed absorbent of an ionic liquid (IL) and triethylene glycol (TEG) is first proposed for natural gas (NG) dehydration. The hydrophilic [EMIM][BF4] is selected as an appropriate IL composition from 240 potential candidates by…
The Constitution Spar is located in Green Canyon block 680 in the Gulf of Mexico, approximately 190 miles from New Orleans and in approximately 5,100 feet of water. The original nameplate separation capacity for the spar is 70,000 BOPD and 200 MMSCFD…
The study compared the techno-economic performance of two CO2 separation technologies from high CO2-content natural gas, membrane and controlled freeze zone (CFZ) separation, for liquefied natural gas (LNG) production integrated CO2 sequestration.…
CO2 flooding crude oil may generate abundant foams in oil field separators after depressurization. A large amount of foams occupies most of the space in a separator and spends much time to burst, which, in turn, reduces the separation efficiency of…
We describe herein the design of a small AC electrostatic model coalescer for investigating coalescence efficiency of water in oil emulsions. The function of the model coalescer is tested on emulsions with different water cuts. In the coalescer,…
The US Environmental Protection Agency (EPA) categorizes "oil sludge" as a hazardous waste that is subject to hazardous waste handling rules. The oil sludge may contain many different compositions. The challenge is that these sludges cannot be…
Almost always crude oil is produced in conjunction with associated gas and for the type of reservoir considered in this study, gas production rate over time increases with decreasing pressure. The problem of maimizing production and/or recovery can…
This paper highlights several opportunities to maximize the total crude oil yield of typical Gas Oil Separation Plants (GOSP's), gas handling and crude oil stabilization systems. This can be achieved for existing facilities by optimizing operating…
This paper highlights several opportunities to maximize the total crude oil yield of typical Gas Oil Separation Plants (GOSP's), gas handling and crude oil stabilization systems. This can be achieved for existing facilities by optimizing operating…
The Constitution Spar is located in Green Canyon block 680 in the Gulf of Mexico, approximately 190 miles from New Orleans and in approximately 5,100 feet of water. The original nameplate separation capacity for the spar is 70,000 BOPD and 200 MMSCFD…
The catalytic upgrading of plastic pyrolysis oil was conducted in a 2-kg-scale pyrolysis oil separation system with or without zeolite 4A, Cu-based (MDC-7) and Ni-based catalysts to produce light (F1), middle (F2) and heavy (F3) oil fractions. From…
The separation technology of carbon dioxide (CO2) is a key step to achieve high efficient carbon capture and storage targets. In the present study, we propose a new concept to remove CO2 from the offshore natural gas industry, which utilises the…
Hydrogen blending has significant influences on the characteristics and evolution of safety accidents of natural gas. In this study, the numerical investigation is performed to reveal the leakage and diffusion characteristics of hydrogen-blended…
The study compared the techno-economic performance of two CO2 separation technologies from high CO2-content natural gas, membrane and controlled freeze zone (CFZ) separation, for liquefied natural gas (LNG) production integrated CO2 sequestration.…
Highly efficient and selective H2S capture is of great scientific significance for natural gas sweetening. However, there was seldom research concerned about the chemical absorption of H2S in deep eutectic solvents (DESs) and the absorption capacity…
Virgin coconut oil (VCO) was used as co-extractant with supercritical carbon dioxide (scCO2) extraction for obtaining xanthones from mangosteen pericarp (MP) without organic co-solvents. In each experiment, 120 g of dried MP that had median particle…
Raw natural gas contains a significant range of impurities, i.e. H2S, CO2, C2, C3, C6+ etc. The acidic H2S and CO2 are especially highly corrosive to processing and transporting equipment and cause serious environmental issues. In the current study,…
Pressure energy recovery is one of the main advantages of a supersonic separator. However, the pressure energy recovery process can cause droplet evaporation in the divergent section, which will reduce the liquefaction efficiency of the nozzle. This…
Offshore natural gas represents a significant portion of global natural gas reserves. Processing of natural gas is essential for gas upgrading before pipeline transportation and utilization. In this work, a phenomena-based approach to propose more…
Metal–organic frameworks (MOFs) have great potentials as adsorbents for natural gas purification. However, the trade-off between selectivity and adsorption capacity remains a challenge. Herein, we report a pillared-layer metal–organic framework…