pH and light dual stimuli-responsive wormlike micelles with a novel Gemini surfactant

Jiao, Weixian; Wang, Zhe; Liu, Tongqing; Li, Xuefeng; Dong, Jianfeng

doi:10.1016/j.colsurfa.2021.126505

Cited by 23 publications

(18 citation statements)

References 49 publications

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“…The solution will then exhibit the crimson colour of the Fe 2+ and Fe 3+ aqueous solutions. On the other hand, excessive H + leads to an increase in the repulsive force between the head groups of the OTAC molecule and destroys the WLM network structure, which results in large settlement of NCs [ 51 , 52 ]. From the results, when pH = 1, the settlement rate decreases, which does not mean that the settlement stability of the NC-VES becomes better, but that more NCs have been dissolved in the solution.…”

Section: Resultsmentioning

confidence: 99%

Experimental Study on the Stability of a Novel Nanocomposite-Enhanced Viscoelastic Surfactant Solution as a Fracturing Fluid under Unconventional Reservoir Stimulation

Ma³

et al. 2022

Nanomaterials

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Fe3O4@ZnO nanocomposites (NCs) were synthesized to improve the stability of the wormlike micelle (WLM) network structure of viscoelastic surfactant (VES) fracturing fluid and were characterized by Fourier transform infrared spectrometry (FT-IR), scanning electron microscopy (SEM), energy dispersive spectrometry (EDS), X-ray diffraction (XRD) and vibrating sample magnetometry (VSM). Then, an NC-enhanced viscoelastic surfactant solution as a fracturing fluid (NC-VES) was prepared, and its properties, including settlement stability, interactions between NCs and WLMs, proppant-transporting performance and gel-breaking properties, were systematically studied. More importantly, the influences of the NC concentration, shear rate, temperature and pH level on the stability of NC-VES were systematically investigated. The experimental results show that the NC-VES with a suitable content of NCs (0.1 wt.%) shows superior stability at 95 °C or at a high shear rate. Meanwhile, the NC-VES has an acceptable wide pH stability range of 6–9. In addition, the NC-VES possesses good sand-carrying performance and gel-breaking properties, while the NCs can be easily separated and recycled by applying a magnetic field. The temperature-resistant, stable and environmentally friendly fracturing fluid opens an opportunity for the future hydraulic fracturing of unconventional reservoirs.

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Section: Resultsmentioning

confidence: 99%

Experimental Study on the Stability of a Novel Nanocomposite-Enhanced Viscoelastic Surfactant Solution as a Fracturing Fluid under Unconventional Reservoir Stimulation

Ma³

et al. 2022

Nanomaterials

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“…Before this kind of foaming system is injected into the subsurface, its viscosity is made to be similar to that of water, which greatly reduces the difficulty of injection and the range of effect is further expanded. When the foaming system reaches the predetermined position, it acts on the subsurface through an external stimulus (similar to a power switch), in which the viscoelasticity of the foam system can be enhanced to a considerable extent. , Under this condition, stability is also naturally improved. There are currently several types of stimulation methods being studied, including pH response, light response, redox reaction response, magnetic response, temperature, and CO 2 response .…”

Section: Introductionmentioning

confidence: 99%

Study on the Stabilization Mechanism of Wormlike Micelle-CO₂ Foams in High-Temperature and High-Salt Oil Reservoirs

Lai

Wang

et al. 2023

Energy Fuels

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The reservoir environment is complex and variable, and the foam itself is a thermodynamically metastable system. Therefore, the influence of a high-temperature and high-salt reservoir environment on the stability of foams has not been extensively studied in the field of foam flooding. In this study, the influence of high-temperature and high-salt oil reservoir conditions on the stability and stability mechanism of wormlike micelle (WLM)-CO 2 foam systems was explored using foam volume, foam half-life, liquid separation half-life, and foam coarsening behavior as the performance indexes. This goal was achieved by characterizing the foam stability, setting a series of temperatures and salinity in the environment where the foam system is located, and applying statistical methods to intuitively recognize the foam and evaluate the foam effect. In addition, the theory of rheology was used to measure WLM-CO 2 foam system's apparent viscosity and the modulus of energy storage and modulus of loss of foams, and the foam effect was evaluated indirectly. The results showed that the higher the temperature of the WLM-CO 2 foam in the experimental temperature range, the worse the foam stability was. The effect of salinity on the stability of WLM-CO 2 foams is "slightly synergistic, excessively antagonistic". This paper systematically explored the stability law of WLM-CO 2 foams under high-temperature and highsalt reservoir conditions from the microcosmic level and analyzed the attenuation mechanism of the foam by innovative use of rheological theory as to provide a more comprehensive theoretical guidance for the practical application of the WLM-CO 2 foam system in enhanced oil recovery.

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“…Many researchers have studied pH-sensitive surfactants extensively, but most of the results have been obtained at room temperature and in pure water ( Fu et al, 2021 ; Jiao et al, 2021 ). The seawater-based clean fracturing fluid is tough to construct, mainly because of the high salinity of seawater, which is 30,000–40,000 mg/L and contains a lot of Ca 2+ and Mg 2+ plasma ( Sun et al, 2019 ; Zhang et al, 2019 ).…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation and Mechanism Study of Seawater-Based Circulatory Fracturing Fluid Based on pH-Regulated WormLike Micelles

Tang¹,

Song

Min

et al. 2022

Front. Chem.

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In this article, a novel salt-resistant pH-sensitive surfactant N-carboxystearamido methanesulfonic acid (MSA) was designed and synthesized. The rheological properties of the MSA/CTAB mixed system prepared using seawater were evaluated, and the variation laws of the related rheological parameters were discussed. The relevant fracturing technical parameters of the MSA/CTAB mixed system were comprehensively evaluated. The wormlike micelles formed by the non-covalent binding of MSA and CTAB molecules can resist the electrostatic effect of inorganic salts in the seawater. Meanwhile, the MSA/CTAB mixed system has an excellent pH response and revealed that the change from wormlike micelles to spherical micelles leads to the decrease of the apparent viscosity and the transition from Maxwell fluid to Newton-type fluid. Furthermore, the MSA/CTAB mixed system has excellent cyclic fracturing performance, which can meet the dual requirements of fracturing fluid cost and performance of offshore oilfield, and has a good application prospect.

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pH and light dual stimuli-responsive wormlike micelles with a novel Gemini surfactant

Cited by 23 publications

References 49 publications

Experimental Study on the Stability of a Novel Nanocomposite-Enhanced Viscoelastic Surfactant Solution as a Fracturing Fluid under Unconventional Reservoir Stimulation

Experimental Study on the Stability of a Novel Nanocomposite-Enhanced Viscoelastic Surfactant Solution as a Fracturing Fluid under Unconventional Reservoir Stimulation

Study on the Stabilization Mechanism of Wormlike Micelle-CO₂ Foams in High-Temperature and High-Salt Oil Reservoirs

Performance Evaluation and Mechanism Study of Seawater-Based Circulatory Fracturing Fluid Based on pH-Regulated WormLike Micelles

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pH and light dual stimuli-responsive wormlike micelles with a novel Gemini surfactant

Cited by 23 publications

References 49 publications

Experimental Study on the Stability of a Novel Nanocomposite-Enhanced Viscoelastic Surfactant Solution as a Fracturing Fluid under Unconventional Reservoir Stimulation

Experimental Study on the Stability of a Novel Nanocomposite-Enhanced Viscoelastic Surfactant Solution as a Fracturing Fluid under Unconventional Reservoir Stimulation

Study on the Stabilization Mechanism of Wormlike Micelle-CO2 Foams in High-Temperature and High-Salt Oil Reservoirs

Performance Evaluation and Mechanism Study of Seawater-Based Circulatory Fracturing Fluid Based on pH-Regulated WormLike Micelles

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Study on the Stabilization Mechanism of Wormlike Micelle-CO₂ Foams in High-Temperature and High-Salt Oil Reservoirs