Screening Criteria of Enhanced Oil Recovery Methods

Mahdavi, Ehsan; Zebarjad, Fatemeh Sadat

doi:10.1016/b978-0-12-813027-8.00002-3

Cited by 10 publications

(11 citation statements)

References 54 publications

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“…It is evident that the interfacial tension between the oil droplet and Na 2 CO 3 solution is far less than the oil droplet and MgSO 4 solution. This considerable decrease in the interfacial tension between oil and Na 2 CO 3 solution can be attributed to the produced in‐situ surfactant, [ 27,28 ] and as a result, more water droplets with the smaller surfaces would be formed.…”

Section: Experimental Setup and Proceduresmentioning

confidence: 99%

Stability of w/o emulsions for MgSO₄ and Na₂CO₃ solutions under dynamic and static conditions

et al. 2020

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Emulsions are widely used in various sectors of the oil industry. They can spontaneously be formed during drilling, production, transportation, and oil separation processes. The stability of these emulsions is closely related to species such as asphaltene and resin at the water/oil interface. In this study, emulsion stability was studied at static and dynamic conditions where w/o emulsions were prepared using different concentrations of MgSO4 and Na2CO3 solutions. The optimum concentration of MgSO4 and Na2CO3 solutions was then obtained by microscopic imaging of the samples and analyzing through the ImageJ software. Once the optimum concentrations was established, the stability of emulsions were examined in a 10‐day time period. Emulsion stability at dynamic condition was also examined through injecting the optimum aqueous solutions into a micromodel. Based on these findings, 50 000 ppm and 60 000 ppm were identified as optimum concentrations for the formation of stable w/o emulsions for MgSO4 and Na2O3, respectively. Asphaltene also showed distinct behaviour with pH in which higher polarization was observed for basic solutions. According to this finding, more stable emulsions have been observed in the optimum solution of MgSO4 (in comparison with the Na2O3 solution) under static and dynamic conditions.

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Section: Experimental Setup and Proceduresmentioning

confidence: 99%

Stability of w/o emulsions for MgSO₄ and Na₂CO₃ solutions under dynamic and static conditions

et al. 2020

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“…The profound reduction of IFT should be related to reaction between the acidic components of the crude oil and the basic solution. Moreover, the considerable reduction in the interfacial tension between oil and Na 2 CO 3 solution can be attributed to the produced in-situ surfactant (Mahdavi and Zebarjad, 2018;Sheng, 2010). As a result of this phenomenon, more water droplets with the smaller surfaces would be formed.…”

Section: Effect Of Salinity On Stability Of Emulsions At Static Condimentioning

confidence: 99%

Experimental study ofin-situW/O emulsification during the injection of MgSO₄and Na₂CO₃solutions in a glass micromodel

Palizdan

Doryani

Riazi

et al. 2020

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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In-situ emulsification of injected brines of various types is gaining increased attention for the purpose of enhanced oil recovery. The present experimental study aims at evaluating the impact of injecting various solutions of Na2CO3 and MgSO4 at different flow rates resembling those in the reservoir and near wellbore using a glass micromodel with different permeability regions. Emulsification process was visualized through the injection of deionized water and different brines at different flow rates. The experimental results showed that the extent of emulsions produced in the vicinity of the micromodel exit was profoundly higher than those at the entrance of the micromodel. The injection of Na2CO3 brine after deionized water caused the impact of emulsification process more efficiently for attaining higher oil recovery than that for the MgSO4 brine. For instance, the injection of MgSO4 solution after water flooding increased oil recovery only up to 1%, while the equivalent figure for Na2CO3 was 28%. It was also found that lower flow rate of injection would cause the displacement front to be broadened since the injected fluid had more time to interact with the oil phase. Finally, lower injection flow rate reduced the viscous force of the displacing fluid which led to lesser occurrence of viscous fingering phenomenon.

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“…Taking into account the continuously increasing demand for the polymer flooding application, studying the technological aspects that influence the success and effectiveness of project implementation is essential. One of the key points in the technology design is the preparatory stage, which typically includes screening, analyzing, and selecting the most promising objects for the technology implementation (Mahdavi and Zebarjad, 2018).…”

Section: Introductionmentioning

confidence: 99%

A novel integrated methodology for screening, assessment and ranking of promising oilfields for polymer floods

Podoprigora,

Byazrov,

Lagutina

et al. 2024

Adv. Geo-Energy Res.

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Screening Criteria of Enhanced Oil Recovery Methods

Cited by 10 publications

References 54 publications

Stability of w/o emulsions for MgSO₄ and Na₂CO₃ solutions under dynamic and static conditions

Stability of w/o emulsions for MgSO₄ and Na₂CO₃ solutions under dynamic and static conditions

Experimental study ofin-situW/O emulsification during the injection of MgSO₄and Na₂CO₃solutions in a glass micromodel

A novel integrated methodology for screening, assessment and ranking of promising oilfields for polymer floods

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Screening Criteria of Enhanced Oil Recovery Methods

Cited by 10 publications

References 54 publications

Stability of w/o emulsions for MgSO4 and Na2CO3 solutions under dynamic and static conditions

Stability of w/o emulsions for MgSO4 and Na2CO3 solutions under dynamic and static conditions

Experimental study ofin-situW/O emulsification during the injection of MgSO4and Na2CO3solutions in a glass micromodel

A novel integrated methodology for screening, assessment and ranking of promising oilfields for polymer floods

Contact Info

Product

Resources

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Stability of w/o emulsions for MgSO₄ and Na₂CO₃ solutions under dynamic and static conditions

Stability of w/o emulsions for MgSO₄ and Na₂CO₃ solutions under dynamic and static conditions

Experimental study ofin-situW/O emulsification during the injection of MgSO₄and Na₂CO₃solutions in a glass micromodel