Impact of PAM-ZnO nanocomposite on oil recovery

Asl, Fatemeh Ozar; Zargar, Ghasem; Manshad, Abbas Khaksar; Arif, Muhammad; Iglauer, Stefan; Keshavarz, Alireza

doi:10.1016/j.fuel.2022.125941

Cited by 15 publications

(7 citation statements)

References 57 publications

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“…The dependence of temperature on rock wetting behaviors and the attendant effects on oil recovery from sandstone formations have been investigated in previous studies. − Although some reported results have been quite contradictory, , the common trend regarding the impact of temperature on rock wettability is that increasing the temperature enhances the capacity of the trapped oil to flow compared to that of the water; hence, the water-wetness of the rock decreases at elevated temperatures. Moreover, an increase in temperature reduces the oil–water IFT and decreases the viscosity of trapped oil, thus resulting in an overall increase in oil recovery from sandstone formations. − …”

Section: Resultsmentioning

confidence: 99%

Impact of Methylene Blue on Enhancing the Hydrocarbon Potential of Early Cambrian Khewra Sandstone Formation from the Potwar Basin, Pakistan

Ali,

Shar,

Yekeen

et al. 2023

ACS Omega

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Significant amounts of hydrocarbon resources are left behind after primary and secondary recovery processes, necessitating the application of enhanced oil recovery (EOR) techniques for improving the recovery of trapped oil from subsurface formations. In this respect, the wettability of the rock is crucial in assessing the recovery and sweep efficiency of trapped oil. The subsurface reservoirs are inherently contaminated with organic acids, which renders them hydrophobic. Recent research has revealed the significant impacts of nanofluids, surfactants, and methyl orange on altering the wettability of organic-acid-contaminated subsurface formations into the water-wet state. This suggests that the toxic dye methylene blue (MB), which is presently disposed of in huge quantities and contaminates subsurface waters, could be used in EOR. However, the mechanisms behind hydrocarbon recovery using MB solution for attaining hydrophilic conditions are not fully understood. Therefore, the present work examines the impacts of MB on the wettability reversal of organic-acid-contaminated Khewra sandstone samples (obtained from the outcrop in the Potwar Basin, Pakistan) under the downhole temperature and pressure conditions. The sandstone samples are prepared by aging with 10 –2 mol/L stearic acid and subsequently treated with various amounts of aqueous MB (10–100 mg/L) for 1 week. Contact angle measurements are then conducted under various physio-thermal conditions (0.1–20 MPa, 25–50 °C, and salinities of 0.1–0.3 M). The results indicate that the Khewra sandstone samples become hydrophobic in the presence of organic acid and under increased pressure, temperature, and salinity. However, the wettability changes from oil-wet to preferentially water-wet in the presence of various MB solutions, thus highlighting the favorable effects of MB on EOR from the Khewra sandstone formation. Moreover, the most significant change in wettability is observed for the Khewra sandstone sample that was aged using 100 mg/L MB. These results suggest that injecting MB into deep underground Khewra sandstone reservoirs may produce more residual hydrocarbons.

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Section: Resultsmentioning

confidence: 99%

Impact of Methylene Blue on Enhancing the Hydrocarbon Potential of Early Cambrian Khewra Sandstone Formation from the Potwar Basin, Pakistan

Ali,

Shar,

Yekeen

et al. 2023

ACS Omega

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“…In addition to increasing the injectivity and reducing the salinity of the oil layer environment, it makes the polymer more efficient. Secondary water injection is not specific to polymer and for all chemical water injection scenarios such as surfactants and nanoparticles, this applies to all chemical methods that are formulated based on optimal concentrations. , …”

Section: Resultsmentioning

confidence: 99%

“…Secondary water injection is not specific to polymer and for all chemical water injection scenarios such as surfactants and nanoparticles, this applies to all chemical methods that are formulated based on optimal concentrations. 45,46 In addition, the injection of chemical solutions, especially polymers, is usually done as a slug (as in the current study). Each chemical slug is protected by two spacers of compatible salinity, one before and one after.…”

Section: And Oil Recoverymentioning

confidence: 99%

Chemical-Enhanced Oil Recovery by Alkali/Sulfate Smart Water Flooding in Carbonate Reservoirs Using a Green Polymer Extracted from Plantago ovata Seed

Nowrouzi,

Mohammadi,

Manshad

2023

Energy Fuels

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“…However, 30% of the total oil in place has been extracted whereas 70% of oil is still in the subsurface which needs to be extracted by the application of an advanced oil recovery method. , To improve the recovery factor, various enhanced oil recovery (EOR) techniques are being used. Chemical-EOR is gaining enormous attention because of its better performance in extracting oil from reservoirs and compatibility with most of the reservoir conditions. , In general, this comprises the injection of displacing slug that helps modify the formation condition and mechanism of oil displacement. , Chemical-EOR involves the use of alkali, surfactant, and polymer or fusion of them . Among alkali, surfactant, and polymer, surfactant flooding is a notable chemical-EOR technique as it directly impacts on interfacial tension (IFT) of crude oil .…”

Section: Introductionmentioning

confidence: 99%

“…Chemical-EOR is gaining enormous attention because of its better performance in extracting oil from reservoirs and compatibility with most of the reservoir conditions. 6,7 In general, this comprises the injection of displacing slug that helps modify the formation condition and mechanism of oil displacement. 8,9 Chemical-EOR involves the use of alkali, surfactant, and polymer or fusion of them.…”

Section: Introductionmentioning

confidence: 99%

Biosurfactant Derived from Fenugreek Seeds and Its Impact on Wettability Alteration, Oil Recovery, and Effluent Treatment of a Rock System of Mixed Composition

et al. 2023

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Surfactant flooding is a method practiced for chemically enhanced oil recovery (EOR) to pursue oil displacement efficiency by lowering the interfacial tension and changing the wettability. However, the application of natural surfactants in oil recovery is an effective way to reduce surfactant adsorption in porous media. Thus, this study gives insight into saponin derived from fenugreek seed as a natural surfactant and utilized for oil recovery into different porous and permeable rock matrixes that consist of sandstone, carbonate, and their conjugates in varying concentrations. The natural surfactant was found to be effective at low concentrations based on its interfacial tension (IFT) value (10 mN/m at CMC 0.2 wt %). The natural surfactant solution profile exhibited shear-thinning behavior at ambient and high temperature conditions. The results of ultraviolet−visible (UV−vis) absorbance from the findings also reveal reduced adsorption on the carbonate surface and proven potential to affect the rock wettability during oil recovery. However, 58% of OOIP oil recovery was achieved in sandstone, which was higher than the recovery in carbonate rock (50% of OOIP) and conjugate rock systems (57% of OOIP). In line with this study, a novel mechanism for the treatment of effluent produced during oil recovery was found. The mechanism for effluent treatment is a combination of gravity segregation and heat treatment. Additionally, the heat treatment mechanism for effluent treatment was found to be one of the effective techniques in this study, and a maximum oil recovery of 4.2 (sandstone), 3.4 (carbonate), and 3.9 (conjugate rock) % OOIP was achieved. The findings of this study thus conclude an important outlook for surfactant flooding using natural surfactant derived from agro-products like fenugreek and highlights the potential of natural, economical, and eco-friendly surfactants.

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Impact of PAM-ZnO nanocomposite on oil recovery

Cited by 15 publications

References 57 publications

Impact of Methylene Blue on Enhancing the Hydrocarbon Potential of Early Cambrian Khewra Sandstone Formation from the Potwar Basin, Pakistan

Impact of Methylene Blue on Enhancing the Hydrocarbon Potential of Early Cambrian Khewra Sandstone Formation from the Potwar Basin, Pakistan

Chemical-Enhanced Oil Recovery by Alkali/Sulfate Smart Water Flooding in Carbonate Reservoirs Using a Green Polymer Extracted from Plantago ovata Seed

Biosurfactant Derived from Fenugreek Seeds and Its Impact on Wettability Alteration, Oil Recovery, and Effluent Treatment of a Rock System of Mixed Composition

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