Efficiency of Ionic Liquid 1-Ethyl-3-Methyl-Imidazolium Acetate ([EMIM][Ac]) in Enhanced Medium Oil Recovery

Alarbah, Ali; Shirif, Mohamed; Shirif, Ezeddin

doi:10.4236/aces.2017.73022

Cited by 4 publications

(5 citation statements)

References 18 publications

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“…For one of the scenarios the core samples were initially flooded with 1 pore volume of chemicals mixture then flushed by two pore volumes of brine. The optimum flow rate (2 cm 3 /min) was applied as injection rate for flooding experiments that were done to investigate the effect of chemical concentration, the chemical solution slug size, the initiation time for injecting the chemical mixture as well as the flow rate that was obtained from previous study [16]. The produced oil and water samples from the sand pack were collected in graduated tubes and then placed in a separator to determine the exact amount of recovered oil.…”

Section: Methodsmentioning

confidence: 99%

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Investigation of Different Ionic Liquids in Improving Oil Recovery Factor

Alarbah¹,

Shirif²,

Shirif³

2019

ACES

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In order to improve oil recovery, Enhanced Oil Recovery (EOR) techniques have been applied to several light and medium oil reservoirs. This research was directed towards the development of chemical flooding methods for such reservoirs. The main objective of this experimental work was to investigate the efficiency of introducing various types of Ionic Liquids (ILs), 1-Ethyl-3-methylimidazolium Chloride [EMIM][Cl], 1-Benzyl-3-methylimidazolium Chloride [BenzMIM][Cl], and Trihexyltetradecylphosphonium Chloride [THTDPh][Cl] on the Recovery Factor (RF) of medium oil (Weyburn oil, 30.25 API˚) at room temperature. The series of flooding experiments were carried out by introducing a slug of IL mixtures. Results demonstrated that maximum oil recovery factor was obtained when [EMIM][Cl] was added in the displacing fluid. Further investigations have been conducted to examine the effect of ILs concentrations on the recovery mechanisms by measuring Surface Tension (SFT), pH, and viscosity of the displacing phases. Finally, the effect of theses ILs in wettability alteration was examined.

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Section: Methodsmentioning

confidence: 99%

“…2017) have found that the increase in the RF was not economical when the IL [EMIM][Ac] concentration rose beyond the optimum concentration[16].…”

mentioning

confidence: 99%

Investigation of Different Ionic Liquids in Improving Oil Recovery Factor

Alarbah¹,

Shirif²,

Shirif³

2019

ACES

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“…The relevant core sample physical property data were obtained from the laboratory experiments [14] and supplemented with CMG templates if needed. A summary of the rock and fluid properties is shown in Table 1.…”

Section: Reservoir Propertiesmentioning

confidence: 99%

“…The reservoir model used is a water-wet sandstone medium. The two-phase relative permeability for the base case utilized in this study is based on the laboratory flooding experiments [14]. The two-phase water oil relative permeability as a function of water saturation is shown in Table 2.…”

Section: Relative Permeabilitymentioning

confidence: 99%

Performance Evaluation of Ionic Liquids Using Numerical Simulation

Elaghoury¹,

Alarbah²,

Shirif³

et al. 2022

ACES

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Given the rise in oil productivity from conventional and unconventional resources in Canada using Enhanced Oil Recovery (EOR), the need to understand and characterize these techniques, for the purpose of recovery optimization, has taken a prominent role in resource management. Chemical flooding has proved to be one of the most efficient EOR techniques. This study investigated the potential of employing Ionic Liquids (ILs) as alternative chemical agents for improving oil recovery. There is very little attention paid to employing this technique as well as few experimental and simulation studies. Consequently, very limited data are available. Since pilot and field studies are relatively expensive and time consuming, a numerical simulation study using CMG-STARS simulator was utilized to explore the efficiency of employing 1-Ethyl-3-Methyl-Imidazolium Acetate ([EMIM][Ac]) and 1-Benzyl-3-methlimidazolium chloride ([BenzMIM][Cl]) with respect to improving medium oil recovery. Eight different lab-scale sandpack flooding experiments were selected to develop a numerical model to obtain the history matching of the experimental flooding results using CMG-CMOST. We observed that the main challenge was tuning the relative permeability curves to achieve a successful match for the oil recovery factor. Finally, a sensitivity study was performed to examine the effect of the chemical injection rate, the chemical concentration, the slug size, and the initiation time on oil recovery. The results showed a noticeable increase in the oil RF when injecting IL compared to conventional waterflooding.

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“…In addition to the high performance at high-salinity and high-temperature conditions, ILs exhibit some behaviors making them more effective than surfactants. , From these unique properties, we can refer to their environmentally friendly, cost-effectivity, nontoxicity, nonflammability, high viscosity, high thermal and salinity stability, and changeability of their surface properties . The main advantages of ILs stemming from their outstanding properties which make them more attractive in the oil industry are the ability to prevent asphaltene precipitation, reduce oil viscosity, and break water-in-oil emulsions. , Recently, they have been used as a surface-active chemical to reduce the interfacial tension (IFT) between aqueous and nonaqueous phases and to change the wettability of the rock surface toward more water-wet conditions. ,− The selection of the appropriate type of IL is an important step that should be performed cautiously since some of them are unsuitable for EOR purposes mainly because of an inactive surface. , …”

Section: Introductionmentioning

confidence: 99%

Mechanistic Investigation of the Synergy of a Wide Range of Salinities and Ionic Liquids for Enhanced Oil Recovery: Fluid–Fluid Interactions

et al. 2021

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In this paper, the performance of three imidazolium-based ionic liquids (ILs) including 1-hexyl-3-methylimidazolium chloride ([HMIM][Cl] or IL6), 1-octyl-3-methylimidazolium chloride ([OMIM][Cl] or IL8), and 1dodecyl-3-methylimidazolium chloride ([DMIM][Cl] or IL12) in reducing the interfacial tension (IFT) between crude oil and IL solutions was analyzed for the first time under a wide range of salinities (1000 to 195 476 ppm) at a reservoir temperature of 80 °C. The purpose was to microscopically analyze the occurring phenomenon at the fluid−fluid interface to determine the mechanism leading to oil extraction and to address the existing ambiguities in the literature concerning the synergism between ILs and different types/concentrations of ions. The quality of the synthesized ILs and their accumulation at the crude oil/IL solution interface was analyzed via attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy, the IFT between crude oil and IL solutions was measured by the pendant drop method, and the micelles' size distribution and molecular diffusivity of the ILs in the aqueous solution was measured by the dynamic light scattering (DLS) technique. On the basis of the ATR-FTIR and IFT results, the accumulation of the ILs molecules at the interface of the crude oil/IL solution was a function of alkyl chain length and the ionic strength (IS) of solution; the longer alkyl chain ILs (i.e., IL12 in this study) accumulated more at the interface of the solution with more IS, leading to a more IFT reduction. At a constant but low range of salinities, the longer alkyl chain IL exhibited a lower IFT value in the presence of diluted seawater (dSW) than the diluted formation water (dFW). This is because of the higher concentration of divalent cations (Mg 2+ and Ca 2+ ) in dSW than dFW and their interactions with resin and asphaltene molecules and the salting-in effect mechanism that overcomes the lower saponification ability of dSW than dFW.

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Efficiency of Ionic Liquid 1-Ethyl-3-Methyl-Imidazolium Acetate ([EMIM][Ac]) in Enhanced Medium Oil Recovery

Cited by 4 publications

References 18 publications

Investigation of Different Ionic Liquids in Improving Oil Recovery Factor

Investigation of Different Ionic Liquids in Improving Oil Recovery Factor

Performance Evaluation of Ionic Liquids Using Numerical Simulation

Mechanistic Investigation of the Synergy of a Wide Range of Salinities and Ionic Liquids for Enhanced Oil Recovery: Fluid–Fluid Interactions

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