Comprehensive Review of Alkaline–Surfactant–Polymer (ASP)-Enhanced Oil Recovery (EOR)

Pan, Yang; Li, Zi-An; Xia, Bing; Yuan, Yajuan; Huang, Qaing-tai; Liu, Weiliang; Cheng, Chiyu

doi:10.1007/978-981-10-7560-5_79

Cited by 14 publications

(9 citation statements)

References 23 publications

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“…The combination of alkali and surfactant is known to yield synergistic performances [ 3 , 34 , 59 , 60 ]. Based on the IFT reduction studies of the surfactants, concentrations of 0.02 wt% and 0.01 wt% were chosen.…”

Section: Resultsmentioning

confidence: 99%

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%

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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“…The synergism that exists in combining alkali and surfactant is a well-known phenomenon. ,,, In various studies, the alkali concentration has been varied at the surfactant concentration where minimum IFT was achieved. ,, Further reduction is observed at this surfactant concentration with variation in the alkali concentration. Contrary to these observations, an increase in IFT was observed upon adding alkali to the surfactant at the concentration of minimum IFT (CMC), as shown in Figure .…”

Section: Resultsmentioning

confidence: 99%

Investigation into the Oil Recovery Process Using an Organic Alkali–Amino Acid-Based Surfactant System

et al. 2021

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The development of combinatory flooding has evolved over the years to utilize the synergies that come into play upon combining more than one chemical agent in a chemical flooding process. This study focuses on investigating the synergies that exist in combining monoethanolamine (ETA) and sodium cocoyl alaninate (SCA) as an alkali–surfactant (AS) formulation for the enhanced oil recovery process. A conventional formulation made of sodium carbonate (Na2CO3) and sodium dodecyl sulfate (SDS) was used for a comparative purpose. The proposed formulation proved to be compatible with the prepared hard brine. The ETA–SCA combination proved superior to Na2CO3–SDS in interfacial tension (IFT) reduction and wettability alteration. Addition of ETA to SCA synergistically reduced IFT to a low value of 4.73 × 10–2 mN/m at a surfactant concentration lower than the critical micelle concentration (CMC). ETA also played a synergistic role in improving the wetting power of SCA on quartz surface. The formulation also showed a high emulsifying ability owing to its superior IFT reduction capability. Static adsorption studies showed SCA to exhibit Langmuir-type adsorption behavior similar to SDS. The adsorption of SCA onto a sand surface was favorable, but ETA proved to reduce adsorption of SCA effectively at 0.3 wt %. The ETA–SCA and Na2CO3–SDS systems achieved additional oil recoveries of 31 and 25% original oil in place (OOIP) over conventional core flooding, respectively. The proposed AS formulation, therefore, showed better recovery potential in addition to its environmentally friendly nature.

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“…Due to the limitations of conventional single chemical flooding technology, the concept of chemical combined flooding is proposed, and the most representative one is alkalinesurfactant-polymer (ASP) flooding (Abdurrahman, 2017;Guo et al, 2018;Khalilinezhad et al, 2016;Yang et al, 2019). Regarding the ASP flooding mechanism, researchers have conducted many in-depth studies in recent years.…”

Section: Mechanism Of Oil Displacementmentioning

confidence: 99%

Research progress of viscoelastic surfactants for enhanced oil recovery

Tang

Mpelwa

et al. 2021

Energy Exploration & Exploitation

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Although new energy has been widely used in our lives, oil is still one of the main energy sources in the world. After the application of traditional oil recovery methods, there are still a large number of oil layers that have not been exploited, and there is still a need to further increase oil recovery to meet the urgent need for oil in the world economic development. Chemically enhanced oil recovery (CEOR) is considered to be a kind of effective enhanced oil recovery technology, which has achieved good results in the field, but these technologies cannot simultaneously effectively improve oil sweep efficiency, oil washing efficiency, good injectability, and reservoir environment adaptability. Viscoelastic surfactants (VES) have unique micelle structure and aggregation behavior, high efficiency in reducing the interfacial tension of oil and water, and the most important and unique viscoelasticity, etc., which has attracted the attention of academics and field experts and introduced into the technical research of enhanced oil recovery. In this paper, the mechanism and research status of viscoelastic surfactant flooding are discussed in detail and focused, and the results of viscoelastic surfactant flooding experiments under different conditions are summarized. Finally, the problems to be solved by viscoelastic surfactant flooding are introduced, and the countermeasures to solve the problems are put forward. This overview presents extensive information about viscoelastic surfactant flooding used for EOR, and is intended to help researchers and professionals in this field understand the current situation.

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Comprehensive Review of Alkaline–Surfactant–Polymer (ASP)-Enhanced Oil Recovery (EOR)

Cited by 14 publications

References 23 publications

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

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

Investigation into the Oil Recovery Process Using an Organic Alkali–Amino Acid-Based Surfactant System

Research progress of viscoelastic surfactants for enhanced oil recovery

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