Alternative chemical agents for alkalis, surfactants and polymers for enhanced oil recovery: Research trend and prospects

Tackie-Otoo, Bennet Nii; Ayoub, Mohammed Abdalla; Yekeen, Nurudeen; Negash, Berihun Mamo

doi:10.1016/j.petrol.2019.106828

Cited by 81 publications

(33 citation statements)

References 94 publications

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“…A significant limitation in ASP application is scale formation by alkalis and surfactant precipitation due to the divalent cations’ presence (mainly Mg 2+ and Ca 2+ ). The effectiveness and efficiency of most conventional surfactants dwindle in the presence of divalent cations [ 9 ]. The precipitates formed reduce the production efficiency through pore blockage [ 14 ].…”

Section: Resultsmentioning

confidence: 99%

“…Despite the promising nature of various chemical floodings and their hybrid techniques, the chemicals deployed have associated limitations that inhibit their worldwide application [ 9 ]. The inorganic alkalis conventionally deployed, like NaOH and Na 2 CO 3 , cause severe scaling problems, which impair reservoir permeability and lead to loss of production capacity [ 10 , 11 , 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

“…Some of these surfactants precipitate in the presence of divalent cations and lose their functionality [ 14 ]. Several scholars have investigated and suggested alternatives in the literature [ 9 ]. They have proposed a switch to using organic alkalis as alternatives to inorganic alkalis.…”

Section: Introductionmentioning

confidence: 99%

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Interfacial Properties, Wettability Alteration and Emulsification Properties of an Organic Alkali–Surface Active Ionic Liquid System: Implications for Enhanced Oil Recovery

et al. 2022

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Combinatory flooding techniques evolved over the years to mitigate various limitations associated with unitary flooding techniques and to enhance their performance as well. This study investigates the potential of a combination of 1-hexadecyl-3-methyl imidazolium bromide (C16mimBr) and monoethanolamine (ETA) as an alkali–surfactant (AS) formulation for enhanced oil recovery. The study is conducted comparative to a conventional combination of cetyltrimethylammonium bromide (CTAB) and sodium metaborate (NaBO2). The study confirmed that C16mimBr and CTAB have similar aggregation behaviors and surface activities. The ETA–C16mimBr system proved to be compatible with brine containing an appreciable concentration of divalent cations. Studies on interfacial properties showed that the ETA–C16mimBr system exhibited an improved IFT reduction capability better than the NaBO2–CTAB system, attaining an ultra-low IFT of 7.6 × 10−3 mN/m. The IFT reduction performance of the ETA–C16mimBr system was improved in the presence of salt, attaining an ultra-low IFT of 2.3 × 10−3 mN/m. The system also maintained an ultra-low IFT even in high salinity conditions of 15 wt% NaCl concentration. Synergism was evident for the ETA–C16mimBr system also in altering the carbonate rock surface, while the wetting power of CTAB was not improved by the addition of NaBO2. Both the ETA–C16mimBr and NaBO2–CTAB systems proved to form stable emulsions even at elevated temperatures. This study, therefore, reveals that a combination of surface-active ionic liquid and organic alkali has excellent potential in enhancing the oil recovery in carbonate reservoirs at high salinity, high-temperature conditions in carbonate formations.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Interfacial Properties, Wettability Alteration and Emulsification Properties of an Organic Alkali–Surface Active Ionic Liquid System: Implications for Enhanced Oil Recovery

et al. 2022

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“…So that, the concentration values less than the CMC can be completely ignored. From surface tension versus the natural logarithm of the OMS concentration plots just below the CMC, the maximum surface excess concentration (G max ) is calculated by the Gibbs adsorption equation, (3).…”

Section: Gibbs Adsorption Isotherm and Thermodynamic Properties Of Thmentioning

confidence: 99%

“…Indeed, these properties cause low owability in porous media and pipeline transportation. 2,3 Thus, the heavy crude oil production process faces numerous challenges, including the cost of production and the nature of the facilities used. 2 In general, several methodologies have been developed to enhance the percentage of heavy crude oil production from oil wells aer reducing the reservoir's energy.…”

Section: Introductionmentioning

confidence: 99%