Effects of fines migration on oil displacement by low-salinity water

Yu, Menghan; Zeinijahromi, Abbas; Bedrikovetsky, Pavel; Genolet, L.; Behr, Aron; Kowollik, P.; Hussain, Furqan

doi:10.1016/j.petrol.2018.12.005

Cited by 55 publications

(14 citation statements)

References 38 publications

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“… 9 Despite the large number of recent studies in this area, a consistent mechanism has not been concluded. 7 , 10 Suggested mechanisms include fine migration, 11 , 12 local increase in pH at the clay surface, 13 , 14 multicomponent ionic exchange, 4 destabilizing oil–rock adhesion, 15 and osmosis 16 among others. A larger number of studies agree that wettability alteration is the mechanism for LS water flooding oil recovery.…”

Section: Introductionmentioning

confidence: 99%

Development of a Microfluidic Method to Study Enhanced Oil Recovery by Low Salinity Water Flooding

Saadat

Tsai

et al. 2020

ACS Omega

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Microfluidics is an appealing method to study processes at rock pore scale such as oil recovery because of the similar size range. It also offers several advantages over the conventional core flooding methodology, for example, easy cleaning and reuse of the same porous network chips or the option to visually track the process. In this study, the effects of injection rate, flood volume, micromodel structure, initial brine saturation, aging, oil type, brine concentration, and composition are systematically investigated. The recovery process is evaluated based on a series of images taken during the experiment. The remaining crude oil saturation reaches a steady state after injection of a few pore volumes of the brine flood. The higher the injection rate, the higher the emulsification and agitation, leading to unstable displacement. Low salinity brine recovered more oil than the high salinity brine. Aging, initial brine saturation, and the presence of divalent ions in the flood led to a decrease in the oil recovery. Most of the tests in this study showed viscous fingering. The analysis of the experimental parameters allowed to develop a reliable and repeatable procedure for microfluidic water flooding. With the method in place, the enhanced oil recovery test developed based on different variables showed an increase of up to 2% of the original oil in place at the tertiary stage.

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Section: Introductionmentioning

confidence: 99%

Development of a Microfluidic Method to Study Enhanced Oil Recovery by Low Salinity Water Flooding

Saadat

Tsai

et al. 2020

ACS Omega

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“…Since it has been shown that low-salinity technique could influence in both wettability alteration (via weakening crude oil-rock electrostatic force and thus reducing attractive disjoining pressure between oil-water and rock-water surfaces [73][74][75] ) and fines migration, 4 recent studies have deliberately excluded the wettability effect from the system in order to elucidate a sole effect of fines migration by using non-polar oil that has no electrostatic impact. [76][77] The studies yet observed considerable additional oil recovery when oil-saturated porous media was flooded with low-salinity brines. As expected, additional oil was produced with large volume of fines, confirming attribution of fines mobilization to incremental oil recovery.…”

Section: Brine Salinity (Mg/l) Swelling Ratiomentioning

confidence: 99%

Fines migration and permeability decline during reservoir depletion coupled with clay swelling due to low-salinity water injection: An analytical study

Tangparitkul

Saul

Leelasukseree

et al. 2020

Journal of Petroleum Science and Engineering

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“…6−13 Among the proposed mechanisms, the wettability alteration toward a more water-wet condition is the primary mechanism with a favorable effect of LSWF in EOR, 13−15 but other researchers argued that fine migration is a mobility controlled mechanism in EOR during LSWF in sandstone reservoirs. 12 The contact angle measurement and core flooding experiments with low-salinity water have demonstrated the alteration of rock wettability from oil-wet to mixed-wet or water-wet state. 16−18 The characteristics of crude oil/brine and rock/brine interfaces and rock dissolution significantly affect the wettability alteration.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Low-salinity water flooding (LSWF), which is the injection of brine with low salinity of seawater or formation water into the reservoir, has been considered as the most promising enhanced oil recovery (EOR) technique because of its low cost and it is environmentally friendly. − Some studies have confirmed improved oil recovery by LSWF in sandstone and carbonate reservoirs, while others have reported unaffected oil recovery. − More than 15 mechanisms have been proposed in the literature to predict the outcomes of LSWF in EOR. − Among the proposed mechanisms, the wettability alteration toward a more water-wet condition is the primary mechanism with a favorable effect of LSWF in EOR, − but other researchers argued that fine migration is a mobility controlled mechanism in EOR during LSWF in sandstone reservoirs . The contact angle measurement and core flooding experiments with low-salinity water have demonstrated the alteration of rock wettability from oil-wet to mixed-wet or water-wet state. − …”

Section: Introductionmentioning

confidence: 99%

Effect of Electrokinetics and Thermodynamic Equilibrium on Low-Salinity Water Flooding for Enhanced Oil Recovery in Sandstone Reservoirs

et al. 2021

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Wettability alteration (from oil-wet to mixed-or water-wet condition) is the most prominent mechanism in lowsalinity water flooding (LSWF) for enhanced oil recovery (EOR) in sandstone reservoirs. Although several factors influence the wettability alteration, many efforts have been made to find the main controlling factor. In this study, the influence of interface properties of sandstone/brine and thermodynamic equilibrium of sandstone minerals were evaluated to understand the wettability alteration during LSWF. A triple-layer surface complexation model built-in PHREEQC was applied to a quartz/brine interface, and the modeling results were verified with zeta potential experimental data. This model was combined with that of kaolinite/brine to predict sandstone/brine interface properties. The measured and predicted sandstone zeta potentials were between those obtained for quartz and kaolinite in the diluted seawater. The predicted surface potential of sandstone together with that of crude oil was used in extended Derjaguin−Landau−Verwey−Overbeek theory to estimate the attractive or repulsive force. Consideration of thermodynamic equilibrium between minerals and solution significantly increased the pH and hence resulted in an increase in negative surface potential in the surface complexation. This provided a strong repulsive force between crude oil and sandstone, thus resulting in a more water-wet condition.

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Effects of fines migration on oil displacement by low-salinity water

Cited by 55 publications

References 38 publications

Development of a Microfluidic Method to Study Enhanced Oil Recovery by Low Salinity Water Flooding

Development of a Microfluidic Method to Study Enhanced Oil Recovery by Low Salinity Water Flooding

Fines migration and permeability decline during reservoir depletion coupled with clay swelling due to low-salinity water injection: An analytical study

Effect of Electrokinetics and Thermodynamic Equilibrium on Low-Salinity Water Flooding for Enhanced Oil Recovery in Sandstone Reservoirs

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