An experimental investigation of smart-water wettability alteration in carbonate rocks – oil recovery and temperature effects

Montazeri, Mostafa; Fazelabdolabadi, Babak; Shahrabadi, Abbas; Nouralishahi, Amideddin; Hallajisani, Ahmad; Moosavian, Seyed Mohammad Ali

doi:10.1080/15567036.2020.1759735

Cited by 10 publications

(6 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The sulfate ion is one of the three PDIs involved in the wettability alteration of chalk rocks. As discussed above, when SW or SmW are injected, SO 4 2– is adsorbed onto the chalk surface, and divalent Ca 2+ and Mg 2+ favor the desorption process of the carboxylate from the rock. − Removal of SO 4 2– from the imbibition fluids has a negative impact on oil recovery. ,,, To evaluate if the sulfate ion has a significant influence on the wettability alteration capacity of the best-performing SAIL formulation, SO 4 2– was removed from the SW0Na brine. The new brine SW0S (SW0Na without SO 4 2– ) was then used as make-up brine for a new [C 12 mim]Br formulation (termed [C 12 mim]Br-SW0S).…”

Section: Results and Discussionmentioning

confidence: 99%

“…84−86 Removal of SO 4 2− from the imbibition fluids has a negative impact on oil recovery. 5,26,87,88 To evaluate if the sulfate ion has a significant influence on the wettability alteration capacity of the best-performing SAIL formulation, SO 4 2− was removed from the SW0Na brine. The new brine ) was then used as make-up brine for a new [C 12 mim]Br formulation (termed [C 12 mim]Br-SW0S).…”

Section: Effect Of Sulfatementioning

confidence: 99%

See 1 more Smart Citation

Evaluation of Surface-Active Ionic Liquids in Smart Water for Enhanced Oil Recovery in Carbonate Rocks

et al. 2023

View full text Add to dashboard Cite

Ionic modification of injected brines (Smart Water EOR) has previously demonstrated great potential for wettability alteration in carbonates from initially mixed-wet toward more water-wet conditions. However, the efficiency of Smart Water application is temperaturedependent, which reduces its ability as a rock wettability modifier at low temperatures (below 100 °C). Moreover, at low temperature conditions, the acid number of crude oils tends to increase in the reservoir, causing a stronger oil wetting character and less water-wet initial conditions. This paper evaluates the wettability alteration potential of surface-active ionic liquids added to Smart Water to obtain a synergistic enhanced oil recovery effect in low-temperature carbonate reservoirs. [C 12 mim]Br, [C 12 Py]Cl, and [C 16 Py]Cl were formulated in Smart Water (SW0Na) and tested as wettability modifiers in mixed-wet carbonate chalk cores. Spontaneous imbibition oil recovery tests showed that the addition of [C 12 mim]Br and [C 12 Py]Cl can cause wettability changes, resulting in increased oil recovery compared to pure SW0Na brine at 90 °C. The highest incremental oil recovery in tertiary mode of 24.6 % OOIP was obtained using [C 12 mim]Br in SW0Na, followed by [C 12 Py]Cl in SW0Na with 22.4 % OOIP, and only 11.5 % OOIP was recovered by pure SW0Na brine. The potential for wettability alteration for carbonate rocks was further evaluated in viscous flooding tests using the best formulation from the results obtained in the spontaneous imbibition experiments ([C 12 mim]Br in SW0Na). The core flooding results showed an ultimate recovery of 79.3 % OOIP achieved in secondary mode injection. Despite the difference in the head groups of the cationic [C 12 mim]Br and [C 12 Py]Cl ionic liquids, both formulations showed abilities to desorb polar organic components of crude oil from the chalk mineral surfaces, thus improving the performance of Smart Water EOR at 90 °C.

show abstract

Section: Results and Discussionmentioning

confidence: 99%

Section: Effect Of Sulfatementioning

confidence: 99%

Evaluation of Surface-Active Ionic Liquids in Smart Water for Enhanced Oil Recovery in Carbonate Rocks

et al. 2023

View full text Add to dashboard Cite

show abstract

“…The data used in the present work was obtained from the open literature as well as our own experiments [4,25,[27][28][29][30]. As explained earlier, the data was collected so as to target three main functionalities minimizing permeability impairment (I), minimizing the possibility of scale damage in the field (II), maximizing oil recovery from matrix (III).…”

Section: Datamentioning

confidence: 99%

A Data Mining Perspective on the Confluent Ions` Effect for Target Functionality

Fazelabdolabadi

Montazeri

Pourafshary

2021

HighTech. Innov. J.

Self Cite

View full text Add to dashboard Cite

The production of hydrocarbon resources at an oil field is concomitant with challenges with respect to the formation of scale inside the reservoir rock – intricately impairing its permeability and hindering the flow. Historically, the effect of ions is attributed to the undergone phenomenon; nevertheless, there exists a great deal of ambiguity about its relative significance compared to other factors, or the effectiveness as per the ion type. The present work applies a data mining strategy to unveil the influencing hierarchy of the parameters involved in driving the process within major rock categories – sandstone and carbonate – to regulate a target functionality. The functionalities considered evolve around maximizing the oil recovery, minimizing permeability impairment/ scale damage. A pool of experimental as well as field data was used for this sake, accumulating the bulk of the available literature data. The methods used for data analysis in the present work included the Bayesian Network, Random Forest, Deep Neural Network, as well as Recursive Partitioning. The results indicate a rolling importance for different ion species - altering under each functionality – which is not ranked as the most influential parameter in either case. For the oil recovery target, our results quantify a distinction between the source of ion of a single type, in terms of its influencing rank in the process. This latter deduction is the first proposal of its kind – suggesting a new perspective for research. Moreover, the machine learning methodology was found to be capable of reliably capturing the data – evidenced by the minimal errors in the bootstrapped results. Doi: 10.28991/HIJ-2021-02-03-05 Full Text: PDF

show abstract

“…However, much of the literature claims that the wettability alteration is the most efficient mechanism in waterflooding processes. ,, Double-layer expansion is considered an important mechanism in wettability alteration . Wettability alteration may also occur due to the dissolution of calcite ,,, or anhydrite A study investigated the impact of different divalent and monovalent ions on IFT and found that Mg 2+ is the most effective ion on IFT reduction in the presence of a large amount of resin.…”

Section: Introductionmentioning

confidence: 99%

Effect of the Type and Concentration of Salt on Production Efficiency in Smart Water Injection into Carbonate Oil Reservoir Rocks

Razavirad

Shahrabadi³

et al. 2023

ACS Omega

Self Cite

View full text Add to dashboard Cite

Smart waterflooding is one of the most practical emerging methods of enhanced oil recovery in carbonate reservoirs. In this study, the effect of salt type and its concentration in smart water on oil recovery from a carbonate reservoir rock is investigated. A series of experimental measurements, including zeta potential (ZP), interfacial tension (IFT), and contact angle (CA), were conducted to examine the effect of ions on the oil/brine/rock interaction. IFT, ZP, and CA were also used as screening methods to select effective solutions for flooding experiments. The results of the study show that synthesized brines containing sodium acetate and potassium acetate salts have a significant effect on the reduction of IFT; however, rock surface wettability due to such brines is insignificant. The presence of organic salts in the injected water can alter the properties of the fluid and rock surface, leading to improved oil recovery. The salts can reduce the interfacial tension between the oil and water phases, making it easier for the water to displace and mobilize trapped oil. This effect is particularly beneficial in reservoirs with high oil–water interfacial tension as it enhances the capillary forces and improves the sweep efficiency. Smart water with sodium acetate (MSW.NaOAc) caused a 7% increase in oil production in the tertiary injection process due to IFT and CA reduction. The secondary injection of MSW.NaOAc led to an oil production efficiency of 76%, which is 10% higher than that of the secondary injection of seawater (SW), confirming the effectiveness of acetate ions in enhancing oil recovery. Doubling the concentration of sulfate ions in modified SW (MSW.NaOAc.2S) caused a 19% increase in oil production in tertiary injections after SW flooding. The secondary injection of MSW.NaOAc.2S produced a 13% increase in the recovery factor compared to SW flooding in the secondary mode. The main driving mechanism for oil mobilization was found to be wettability alteration, which is supported by the analyses of CA and ZP. This study confirms that the salt type and concentration present in a brine solution play a vital role in the movement of trapped oil in carbonate reservoirs.

show abstract

An experimental investigation of smart-water wettability alteration in carbonate rocks – oil recovery and temperature effects

Cited by 10 publications

References 29 publications

Evaluation of Surface-Active Ionic Liquids in Smart Water for Enhanced Oil Recovery in Carbonate Rocks

Evaluation of Surface-Active Ionic Liquids in Smart Water for Enhanced Oil Recovery in Carbonate Rocks

A Data Mining Perspective on the Confluent Ions` Effect for Target Functionality

Effect of the Type and Concentration of Salt on Production Efficiency in Smart Water Injection into Carbonate Oil Reservoir Rocks

Contact Info

Product

Resources

About