Effect of nano-SiO2 on the flowback-flooding integrated performance of water-based fracturing fluids

Wu, Guodong; Pan, Jingjun; Anwaier, Maryamgul; Wu, Jun; Xiao, Peiwen; Zheng, Ling; Wang, Wei; Meng, Xue; Wang, Pingmei; Liu, Jing; He, Sixian; Yan, Xin; Zeng, Meiting; Zhu, Daoyi

doi:10.1016/j.molliq.2023.121686

Cited by 2 publications

(2 citation statements)

References 29 publications

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“…As a fracturing type that can be applied to most reservoirs, water-based fracturing can easily form a water sensitivity effect on shale reservoirs. 7 A poor stability and safety prevent oil-based fracturing fluid and foam fracturing fluid from being used in shale reservoir additionally. Therefore, an effective fracturing method should be explored by petroleum engineers to enhance oil and gas recovery in shale reservoirs.…”

Section: Introductionmentioning

confidence: 99%

“…However, the differences in fracturing operations show different advantages and disadvantages for different reservoir conditions. As a fracturing type that can be applied to most reservoirs, water-based fracturing can easily form a water sensitivity effect on shale reservoirs . A poor stability and safety prevent oil-based fracturing fluid and foam fracturing fluid from being used in shale reservoir additionally.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Supercritical CO₂ Fracturing Fluid on the Permeability of Shale Reservoir and Mechanism Analysis

Guo,

Li,

Zeng

et al. 2024

ACS Omega

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Reduction of the reservoir permeability during supercritical CO 2 fracturing caused significant reservoir damage, which directly affects the crude oil recovery rate. This investigation explored a novel thickener for supercritical CO 2 fracturing fluid, this CO 2 thickener not only effectively improves the viscosity and rheological properties of CO 2 fracturing fluid but also contributes to reduce reservoir damage and improve permeability. The research results indicated that the synthesized CO 2 thickener (3 wt %) can increase the apparent viscosity of supercritical CO 2 fracturing fluid to 7 mPa•s, and a 9% matrix permeability damage rate and a 0.5 mD permeability decrease value are shown in a 3% CO 2 fracturing fluid. However, 3 wt % of commercial CO 2 thickener only increases the apparent viscosity of supercritical CO 2 fracturing fluid to 3 mPa•s, while the reservoir damage rate increases to 13%. Two thickeners exhibit completely different damage capabilities to the reservoir, and the synthesized CO 2 thickener shows excellent characteristics of reducing reservoir permeability and is also conducive to protecting shale reservoirs. Furthermore, supercritical CO 2 fracturing fluid containing synthetic thickeners has better temperature and shear resistance compared with commercial thickeners. This may be because the synthesized thickener and the micro grid formed by supercritical CO 2 reduce the adsorption in shale crevices, but a large amount of commercial thickeners can adsorb on the surface of shale.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of Supercritical CO₂ Fracturing Fluid on the Permeability of Shale Reservoir and Mechanism Analysis

Guo,

Li,

Zeng

et al. 2024

ACS Omega

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The Carrying Behavior of Water-Based Fracturing Fluid in Shale Reservoir Fractures and Molecular Dynamics of Sand-Carrying Mechanism

Li,

Wang

et al. 2024

Processes

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Water-based fracturing fluid has recently garnered increasing attention as an alternative oilfield working fluid for propagating reservoir fractures and transporting sand. However, the low temperature resistance and stability of water-based fracturing fluid is a significant limitation, restricting the fracture propagation and gravel transport. To effectively ameliorate the temperature resistance and sand-carrying capacity, a modified cross-linker with properties adaptable to varying reservoir conditions and functional groups was synthesized and chemically characterized. Meanwhile, a multifunctional collaborative progressive evaluation device was developed to investigate the rheology and sand-carrying capacity of fracturing fluid. Utilizing molecular dynamics simulations, the thickening mechanism of the modified cross-linker and the sand-carrying mechanism of the fracturing fluid were elucidated. Results indicate that the designed cross-linker provided a high viscosity stability of 130 mPa·s and an excellent sand-carrying capacity of 15 cm2 at 0.3 wt% cross-linker content. Additionally, increasing reservoir pressure exhibited enhanced thickening and sand-carrying capacities. However, a significant inverse relationship was observed between reservoir temperature and sand-carrying capacity, attributed to changes in the drag coefficient and thickener adsorption. These results verified the effectiveness of the cross-linker in enhancing fluid viscosity and sand-carrying capacity as a modified cross-linker for water-based fracturing fluid.

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Effect of nano-SiO2 on the flowback-flooding integrated performance of water-based fracturing fluids

Cited by 2 publications

References 29 publications

Influence of Supercritical CO₂ Fracturing Fluid on the Permeability of Shale Reservoir and Mechanism Analysis

Influence of Supercritical CO₂ Fracturing Fluid on the Permeability of Shale Reservoir and Mechanism Analysis

The Carrying Behavior of Water-Based Fracturing Fluid in Shale Reservoir Fractures and Molecular Dynamics of Sand-Carrying Mechanism

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Effect of nano-SiO2 on the flowback-flooding integrated performance of water-based fracturing fluids

Cited by 2 publications

References 29 publications

Influence of Supercritical CO2 Fracturing Fluid on the Permeability of Shale Reservoir and Mechanism Analysis

Influence of Supercritical CO2 Fracturing Fluid on the Permeability of Shale Reservoir and Mechanism Analysis

The Carrying Behavior of Water-Based Fracturing Fluid in Shale Reservoir Fractures and Molecular Dynamics of Sand-Carrying Mechanism

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Product

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Influence of Supercritical CO₂ Fracturing Fluid on the Permeability of Shale Reservoir and Mechanism Analysis

Influence of Supercritical CO₂ Fracturing Fluid on the Permeability of Shale Reservoir and Mechanism Analysis