The challenges associated with heavy crude oil emulsions during hydrocarbon exploitation cannot be overemphasized. As such, water/crude oil separation in oil fields becomes necessary before conveyance to the refinery. In this study, we investigated…
Effectively breaking an emulsion is very important in the petroleum industry since the produced crude oil is accompanied by water, which is linked to emulsions and can cause various environmental issues. To resolve these issues, surfactants are…
The development of concentrated and highly stable oil-in-water (O/W) emulsion is considered to be a cost-effective alternative for the transportation of produced heavy crude oils. However, the demulsification of a transported O/W emulsion is…
The need for efficient demulsification process to treat emulsions in the petroleum industry is well acknowledged. For decades, numerous researches have been conducted to examine mechanisms of emulsification and demulsification. Untreated emulsion has…
Water (W) and oil (O) normally mix during production and while passing through valves and pumps to form a persistent water-in-oil (W/O) emulsion, which is a serious restriction in oil production and transporting and refining processes. The objective…
Emulsified water droplets must be extracted from crude oil for economical and transport purposes, which is achievable by chemical demulsification. Four different chemicals were tested on water-in-crude oil emulsions using a newly developed nuclear…
• Sonochemical technique has the best effect for crude oil demulsification/dehydration. • The influence factor for sonochemical demulsification/dehydration is investigated. • Recent progress on ultrasonic demulsification equipment is introduced.…
Crude oil is normally produced in the form of a water-in-oil (W/O) emulsion. One of the major challenges during crude oil exploration is the high viscosity of crude oil produced due to the formation of stable emulsions. This affects the overall cost…
Viscosity reduction by emulsification would greatly facilitate the exploitation and pipelining transportation of heavy oil, as well as oil sands/sludge washing. However, the final demulsification process to achieve separation of oil and water is…
Separating produced water is a key part of production processing for most crude oils. It is required for quality reasons, and to avoid unnecessary transportation costs and prevent pipework corrosion rates caused by soluble salts present in the water.…
An environmentally-benign supercritical fluid route is developed to demulsify and treat highly intractable petroleum emulsions containing hazardous acidic compounds, heavy fractions, heteroatoms, and metallic impurities without using external…
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…
Power ultrasound, as an emerging green technology has received increasing attention of the petroleum industry. The physical and chemical effects of the periodic oscillation and implosion of acoustic cavitation bubbles can be employed to perform a…
Abstract: The effect from the combined action of a low-frequency acoustic field, a demulsifier (DE), and the temperature factor on the stability of the water-in-oil emulsions formed by crude oils differing in the contents of resins, asphaltenes, and…
Crude oil dehydration is one of the first, most important and challenging steps in oil production and processing. To achieve rapid and energy-optimized demulsification of water-in-oil emulsions, Saudi Aramco and TechnipFMC have jointly developed a…
Water-in-oil emulsions constitute a widespread issue for the oilfield industry. Indeed, the phases of water-in-oil emulsions must be separated as soon as possible in the production chain. These emulsions can be fairly stable due to certain intrinsic…
Implementation of nanotechnology in oil and gas industries, particularly for enhanced oil recovery (EOR) has recently gained interest. In this work, graphene oxide (GO) has been synthesized and used as nano-demulsifier for crude oil in water (O/W)…
The current study aims to investigate the effect of Fe3O4-Basorol P DB-9935 (M-DB) as nanodemulsifier on operating temperature and dewatering efficiency of light, medium, and heavy crude oil. The optimum temperature for dewatering process of…
Produced water from the oil and gas industry often contains stable crude oil-in-water emulsions that are typically difficult to treat with conventional separation methods. Amine-functionalized nanoparticles have demonstrated effective destabilization…
The main problem dehydration system of XinMu Oil Field at present is high dehydration temperatures,high the amount of demulsifier, increase output moisture content year by year and more and more frequent fluctuations.Through the reform to establish a…
The use of asphaltene stabilizers, also referred to as crude stabilizers, is a valuable chemical tool available to the refiner to successfully process unstable or incompatible crude oil blends in crude oil desalters. The increasing interest in crude…
Crude oil emulsions can reach stability levels that pose severe challenges for the processing industry. Certain conventional methods are used to deal with these challenges, such as chemical demulsification. In this article, two chemicals were mixed…
This paper covers practical demulsifer and wash water approach followed by Saudi Aramco Khurais producing facility to optimize the chemical and water consumption. This Paper is intended to: 1. Share practical demulsifer and wash water optimization…
Standard Bottle Test is often the most common technique to gauge the demulsification performance of a newly formulated crude oil demulsifier. In our work, we have attempted to devise a more specific reliable and reproducible technique for monitoring…
Relatively low cost, environmental friendly, and high-efficiency silicon dioxide/carbon sphere composite demulsifiers (SiO2@CS) were prepared via an in situ hydrothermal-calcination route. They were characterized by Fourier-transform infrared…
Nanoemulsions are interesting nano-fluids with a number of potential industrial applications. However, the effective utilization of these colloidal systems will not be achieved without studying their characteristics (e.g., droplet size, interfacial…
The removal of the micro droplets of emulsified water from crude oil causes high cost and energy. In this paper we show that cryo electron microscopy (cryo-EM) imaging of micro and nano emulsions prepared from United Arab Emirate based crude oil…
The creation of oil emulsions due to mechanical strength and natural surfactants during production is undesirable. The challenges associated with transporting and refining oil have led researchers to probe into practical demulsification methods. An…
The efficient separation of water-in-oil emulsions plays significant roles in the petroleum and chemical industries, but deep purification using a single method is difficult. In this work, a combined treatment integrating a direct current electric…
An environmentally friendly LLP@SiO2 demulsifier was prepared by coating nano-SiO2 on the natural lotus leaf powder (LLP) via a simple hydrothermal method. Fourier-transform infrared spectroscope (FT-IR), field-emission scanning electron microscope…
As most of the oil fields gradually come to the middle and late exploitation period, the crude oil production becomes more complex, stable and water cut is also very high. This has brought challenges to oil–water separation in onshore and offshore…
Removing emulsified water from a water-in-crude oil (W/O) emulsion is critically required prior to downstream processing in the petroleum industry. In this work, environmentally friendly and amphipathic rice husk carbon (RHC) demulsifier was prepared…
Green oil-field chemicals based on ionic liquids (ILs) are highly recommended as demulsifiers for heavy crude oil emulsions due to their low vapor pressure, high thermal and chemical stability against degradation in harsh processing conditions. Novel…
The use of chemical demulsifiers in the treatment of crude oil emulsions is an essential step in processing facilities worldwide. Each production facility requires specific demulsifier reformulations as the crude characteristics change. The…
The application of supercritical CO2 (scCO2)-flooding technology is increasing worldwide. After a waxy crude oil is treated with scCO2, its composition and rheological properties are changed and the stability of its emulsion is accordingly altered as…
• Sonochemical technique has the best effect for crude oil demulsification/dehydration. • The influence factor for sonochemical demulsification/dehydration is investigated. • Recent progress on ultrasonic demulsification equipment is introduced.…
Demulsification of water-in-crude oil emulsions is an essential and sometimes challenging procedure for crude oil processing facilities. Pulse field gradient (PFG) NMR techniques are known to monitor the dynamics of emulsion separation. This method…
Separating produced water is a key part of production processing for most crude oils. It is required for quality reasons, and to avoid unnecessary transportation costs and prevent pipework corrosion rates caused by soluble salts present in the water.…
During production of conventional as well as heavy oils, emulsions occur at well bore, in pipelines, and at surface facilities. As the production time of the oil wells increases, there will be an increased coproduction of oil and water in the form of…
Routine dehydration can't be satisfied the practical demand because of the heavier, the higher salinity and the more seriously demulsification of oil. The factors affecting the desalting and dewatering during the ultrasonic pretreatment of crude oil…
Routine dehydration can't be satisfied the practical demand because of the heavier, the higher salinity and the more seriously demulsification of oil. The factors affecting the desalting and dewatering during the ultrasonic pretreatment of crude oil…
Water-in-crude oil emulsions are formed as a result of high shear stresses at the flow restrictions such as choke valves and the wellhead during crude oil transport with produced water. Consequently, the produced water disperses in the crude oil…
The interest in utilizing nanoemulsions in a number of industrial applications is growing rapidly because of their superiority over conventional emulsions. Therefore, the formulation of highly stable crude oil-in-water nanoemulsions with different…
Nanoemulsions are interesting nano-fluids with a number of potential industrial applications. However, the effective utilization of these colloidal systems will not be achieved without studying their characteristics (e.g., droplet size, interfacial…
Emulsions are undesirable in the petroleum industry because they frequently cause equipment corrosion, high-pressure drop in pipelines, high pumping costs, and catalyst poisoning in upstream facilities, all of which add to the overall production…
Unconventional petroleum ores have been considered to be an important part of petroleum resources and an important alternative source of chemicals and energy supply. Extremely stable heavy oil–water emulsions frequently encountered in the separation…
In the petroleum industry, oil and water emulsions are frequent, not only in oilfield operations but also during the transportation and refining processes. Once depicting emulsion formation and stabilization, it is essential to analyse how it is…
The interest in utilizing nanoemulsions in a number of industrial applications is growing rapidly because of their superiority over conventional emulsions. Therefore, the formulation of highly stable crude oil-in-water nanoemulsions with different…