Preparation and performance evaluation of nano-composite fracturing fluid with good oil displacement ability in tight reservoir

Liu, Cheng; Li, Yuyang; Wang, Pan; Jiao, Hongyan; Yao, Xiutian; Zhao, Guang; Dai, Caili; You, Qi

doi:10.1016/j.molliq.2022.120494

Cited by 16 publications

(14 citation statements)

References 33 publications

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“…Moreover, the positively charged hydrophilic group of JA12C causes the subtle electrostatic repulsion among micelles to further enhance the viscoelasticity. Accordingly, compared with hydrophilic SiO 2 NPs, − the amphiphilic structure of the synthetic JA12C NPs should be responsible for the improved performance of the JAVES. This work develops an eco-friendly JAVES fracturing fluid with moderate interfacial activity and explores its formation mechanism at the molecular level, thereby proposing novel insights to further improve the fracturing fluid viscoelasticity.…”

Section: Discussionmentioning

confidence: 99%

“…They have been widely employed to improve VES viscoelasticity. 19,20 Baruah et al found that 0.1% SiO 2 -enhanced VES fluids exhibited adequate apparent viscosity stability and excellent proppant suspension capabilities at high operation temperatures. 21 In our previous work, we also investigated the viscoelasticity of VESs incorporated with SiO 2 NPs, suggesting that the hydrophobic interaction between surfactants and SiO 2 NPs primarily contributed to the significant enhancement of VES viscosity.…”

Section: ■ Introductionmentioning

confidence: 99%

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Performance Evaluation and Formation Mechanism of Viscoelastic Surfactant Fracturing Fluids with Moderate Interfacial Activity Enhanced by Janus-SiO₂ Nanoparticles

et al. 2023

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Nanoparticles (NPs) exhibit great potential to improve various properties of viscoelastic surfactant (VES) fracturing fluids in the development of low-permeability reservoirs. In the present study, the amphiphilic Janus NPs (JANPs) were fabricated via the Pickering emulsion method and employed to construct the novel JA12C (JANPs with dodecyl hydrophobic carbon chains)-assisted VES fracturing fluid (JAVES). The successful fabrication of JANPs was confirmed via Fourier transform infrared spectroscopy (FTIR) measurements and water contact angle tests. The rheology behavior of the VES fracturing fluid incorporating various SiO2 NPs including hydrophilic SiO2 NPs (HLNPs), JA8C (JANPs with octyl hydrophobic carbon chains), and JA12C was systematically investigated. It was revealed that the additional JA12C significantly improved the tolerance and proppant suspension properties. To explore the subsequent oil recovery performance of various gel breaking liquids, the formation wettability and the oil–water interfacial tension (IFT) were studied after the evaluation of breaking properties and formation damage properties of various fracturing fluids. The results suggested that the JAVES gel breaking liquid showed remarkable wettability alternation capability and moderate oil–water IFT reduction ability, which can partially reduce the impact on reservoir permeability. Moreover, the formation mechanism of the JAVES was proposed by molecular dynamics simulations at the molecular level, which was further visually verified via the cryo-TEM images. The improved viscoelasticity of developed the JAVES with moderate interfacial activity is advantageous to enhance subsequent oil recovery.

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Section: Discussionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Performance Evaluation and Formation Mechanism of Viscoelastic Surfactant Fracturing Fluids with Moderate Interfacial Activity Enhanced by Janus-SiO₂ Nanoparticles

et al. 2023

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“…Generally, an added suspension with NPs (usually a water-based suspension) is considered a nanofluid; the application of it after water flooding in improving oil recovery is being actively studied due to the excellent interface properties. More satisfactorily, NPs can significantly improve the oil recovery at quite a low concentration, which made it more considerable in economic cost. , Therefore, optimization study on the synthetic process to make the nanofluid more operable and economical as well as mechanism study in the oil displacement stage has always been the research focus in the EOR field. For example, carbon nanotubes (CNT) can assist the surfactant/polymer to improve the oil displacement efficiency .…”

Section: Introductionmentioning

confidence: 99%

“…17 can significantly improve the oil recovery at quite a low concentration, which made it more considerable in economic cost. 18,19 Therefore, optimization study on the synthetic process to make the nanofluid more operable and economical as well as mechanism study in the oil displacement stage has always been the research focus in the EOR field. For example, carbon nanotubes (CNT) can assist the surfactant/polymer to improve the oil displacement efficiency.…”

Section: Introductionmentioning

confidence: 99%

Effect of the SiO₂ Nanoparticle Size on Application of Enhanced Oil Recovery in Medium-Permeability Formations

Zhou

Jiang

et al. 2023

Energy Fuels

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Nanoparticles (NPs) have been applied in enhanced oil recovery (EOR) successfully over the last couple of decades, due to their unique property inherited by the small size (most of the studies focused on sizes smaller than 50 nm) and abundant surface functional groups. The important mechanism of EOR using a NP-based nanofluid is the change of interfacial properties. However, the effect of the nanoparticle size on the same type of oil recovery has not been systematically studied, especially the larger size. Therefore, in this research, SiO 2 NPs of different sizes, namely, ∼60, ∼100, ∼200, and ∼300 nm, were synthesized using the Stober method and the properties of the NP-based nanofluids were investigated, including interfacial tension (IFT), contact angle, viscosity, capillary pressure, and the ability to extract oil. The experimental results showed that as the SiO 2 NP size decreased, there was a little increase in the IFT, oil contact angle, viscosity, and capillary pressure. With a NP concentration of 0.3 wt % in 3 wt % NaCl brine, the ∼60 nm SiO 2 NP-based nanofluid was the most efficient oil-displacing agent to recover oil from the mediumpermeability core sample of Daqing Oilfield. Therefore, according to the discussion of the selective preference for SiO 2 NP sizes, the developed nanofluid is a promising new material in medium-permeability reservoirs for enhanced oil recovery.

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“…After they enter the pores, they will interact with crude oil, such as emulsifying, reducing interfacial tension, changing wettability, etc., all of which improve the oil displacement efficiency during water flooding and enhance oil recovery. At present, there are many nanomaterials used in low-permeability reservoirs, including inorganic particles such as nano-silica (nano-SiO 2 ), , nano-titanium dioxide (nano-TiO 2 ), , expanded graphene, and organic particles such as nano-scale polymeric microspheres. , Among these, nano-scale flaky particles (such as nano-molybdenum disulfide sheets) hold great potential due to their flaky characteristics to effectively remove the oil film from the rock surface. − For this reason, Hou et al referred to this material as the black nanosheet (BN). Its bilayer thickness was 1.2 nm, and its size was about 60 nm × 80 nm. , However, there have been limited reports regarding nano-BN on an even smaller scale.…”

Section: Introductionmentioning

confidence: 99%

Black Nanosheet-Enhanced Low-Salinity Water System for Improving Oil Recovery in a Low-Permeability Conglomerate Reservoir

et al. 2023

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Black nanosheets (BNs) and low-salinity water (LSW) flooding are two effective methods for improving oil recovery in low-permeability or ultra-low-permeability petroleum reservoirs. The former focuses on emulsification and interfacial tension reduction, while the latter focuses on wettability alteration. Combining BN with LSW is expected to achieve dual effects in oil recovery. However, there has been no research on the combination effect of BN and LSW on conglomerate reservoirs. Therefore, this study aims to investigate the oil imbibition mechanism of the BN–LSW composite system in the tight reservoir of Mahu Oilfield. The interfacial properties of the BN–LSW composite system were evaluated in terms of the oil–water interfacial tension, crude oil emulsification capability, and three-phase contact angle between oil, water, and rock. Through the imbibition experiment of the natural cores in Mahu Oilfield, the imbibition differences between single systems and the BN–LSW composite system were compared. The results showed that the BN–LSW composite system had minimal impact on the interfacial tension between oil and water compared to formation brine, LSW, and BN solution. However, the composite system demonstrated a significant emulsification effect with Mahu crude oil and alterated the wettability of the core. Compared to the single systems, the imbibition rate of the BN–LSW composite system was higher, resulting in an improved imbibition effect. The NMR T 2 signal explained the synergistic core imbibition effect of the BN–LSW composite system at the microscopic scale. The research outcomes of this study can provide a new approach for developing low-permeability and ultra-low-permeability reservoirs, holding practical value and reference significance.

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Preparation and performance evaluation of nano-composite fracturing fluid with good oil displacement ability in tight reservoir

Cited by 16 publications

References 33 publications

Performance Evaluation and Formation Mechanism of Viscoelastic Surfactant Fracturing Fluids with Moderate Interfacial Activity Enhanced by Janus-SiO₂ Nanoparticles

Performance Evaluation and Formation Mechanism of Viscoelastic Surfactant Fracturing Fluids with Moderate Interfacial Activity Enhanced by Janus-SiO₂ Nanoparticles

Effect of the SiO₂ Nanoparticle Size on Application of Enhanced Oil Recovery in Medium-Permeability Formations

Black Nanosheet-Enhanced Low-Salinity Water System for Improving Oil Recovery in a Low-Permeability Conglomerate Reservoir

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Preparation and performance evaluation of nano-composite fracturing fluid with good oil displacement ability in tight reservoir

Cited by 16 publications

References 33 publications

Performance Evaluation and Formation Mechanism of Viscoelastic Surfactant Fracturing Fluids with Moderate Interfacial Activity Enhanced by Janus-SiO2 Nanoparticles

Performance Evaluation and Formation Mechanism of Viscoelastic Surfactant Fracturing Fluids with Moderate Interfacial Activity Enhanced by Janus-SiO2 Nanoparticles

Effect of the SiO2 Nanoparticle Size on Application of Enhanced Oil Recovery in Medium-Permeability Formations

Black Nanosheet-Enhanced Low-Salinity Water System for Improving Oil Recovery in a Low-Permeability Conglomerate Reservoir

Contact Info

Product

Resources

About

Performance Evaluation and Formation Mechanism of Viscoelastic Surfactant Fracturing Fluids with Moderate Interfacial Activity Enhanced by Janus-SiO₂ Nanoparticles

Performance Evaluation and Formation Mechanism of Viscoelastic Surfactant Fracturing Fluids with Moderate Interfacial Activity Enhanced by Janus-SiO₂ Nanoparticles

Effect of the SiO₂ Nanoparticle Size on Application of Enhanced Oil Recovery in Medium-Permeability Formations