The effect of N-ethyl-N-hydroxyethyl perfluorooctanoamide on wettability alteration of shale reservoir

Li, Yongfei; Wang, Kun; Gomado, Foster Dodzi; Wang, Gangxiao; Tang, Longhao; Rong, Xufeng

doi:10.1038/s41598-018-25100-9

Cited by 8 publications

(5 citation statements)

References 32 publications

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“…The wettability differences in various components limit the wetting rate and the wetting area of liquid. 9 Undoubtedly, the characteristics of component wettability and pore fracture development affect the distribution of liquid and the release of wetting heat in a shale matrix, especially based on the degree of liquid entry into the shale. Shale wettability is also affected by the type, content, and wettability of minerals.…”

Section: Calorimetry Experimentmentioning

confidence: 99%

“…Due to the complex wettability characteristics, the wettability of reservoirs can absorb the fracturing fluid and influence the shale oil/gas behavior, such as the mobility of oil and gas, , the low backflow of the fracturing fluid, , “water locking” in reservoirs, − fracturing fluid selection, and oil and gas exploitation. Therefore, the wettability of shale reservoirs must be studied further. − …”

Section: Introductionmentioning

confidence: 99%

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Measurement of Shale Wettability Using Calorimetry: Experimental Results and Model

Chen

Zhang

et al. 2021

Energy Fuels

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Wettability affects the occurrence and exploitation of gas and oil in shale matrices; however, conventional methods for shale wettability evaluation (i.e., contact angle testing, imbibition method, flotation testing, surface tension method, and so forth) have limitations, which, in turn, lead to ambiguous or even contradictory results. Thus, in this paper, the calorimetry method is introduced to evaluate the wettability of shale, and the feasibility of the calorimetry method is discussed. The results show that transitional shale can be classified as mixed wet or more water wet in the southern North China Basin, and the calorimetry method exhibits higher accuracy and applicability. By considering the influence of the interaction between different factors on wettability, a geological prediction model of transitional shale wettability is established, which is helpful for the wettability evaluation of transitional shale and provides theoretical support for the exploitation of unconventional gas and oil. Oil wetting is mainly affected by pyrite and mixed layer illite−smectite (strongly positive influence), whereas water wetting is mainly affected by pyrite (negative influence), dolomite, and siderite (positive influence). The relative wettability index, wetting heat, heat flow rate, and other parameters derived from the calorimetric experiments can be used to evaluate wettability, which can provide theoretical support for the exploitation of unconventional gas and oil.

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Section: Calorimetry Experimentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Measurement of Shale Wettability Using Calorimetry: Experimental Results and Model

Chen

Zhang

et al. 2021

Energy Fuels

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“…However, the peak at 1049 cm −1 , which is attributed to the C-O stretching vibration, was observed due to EC. By further hydrophobic modification, the obtained WHP-CH exhibited adsorption peaks at 1139, 1186, and 1232 cm −1 , which are contributed to the C-F group of fluorocarbon reagent; additionally, the emerging peak at 1732 cm −1 is ascribed to the carbonyl (C=O) stretching vibration of fluorocarbon reagent [ 39 , 40 , 41 ]. The introduction of C-F groups to the WHP-CH was expected to improve its hydrophobicity, thus endowing the WHP-CH with a good salt-resistance feature during solar-driven desalination.…”

Section: Resultsmentioning

confidence: 99%

Janus Biopolymer Sponge with Porous Structure Based on Water Hyacinth Petiole for Efficient Solar Steam Generation

Chen

et al. 2022

IJMS

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Solar-driven steam generation for desalination is a facile, sustainable, and energy-saving approach to produce clean freshwater. However, the complicated fabrication process, high cost, potential environmental impact, and salt crystallization of conventional evaporators limit their large-scale application. Herein, we present a sustainable Janus evaporator based on a biopolymer sponge from the water hyacinth petiole (WHP) for high-performance solar steam generation. The freeze-dried WHP maintained its original porous structure and aligned channels well, and therefore holds the capability for rapid water transport due to strong capillary action. The WHP coated with carbon nanotubes/ethyl cellulose paste on its surface (WHP-C) gains a good photothermal property, thus achieving an efficient solar steam generation with a rate of 1.50 kg m−2 h−1 under 1 sun irradiation. Moreover, the WHP-C after hydrophobic modification by fluorocarbon (WHP-CH) is endowed with high water repellency and exhibits good salt resistance during long-term solar desalination. Additionally, we demonstrate that a stable wet surface that enables efficient water supply and vapor escape is also significant to the successive desalination of a solar evaporator. Our work provides new insights into the high-value utilization of biomass waste, i.e., water hyacinth, and the development of sustainable interfacial solar evaporators for the environmentally friendly production of freshwater.

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“…The θ a and θ r were determined using the tilted plate goniometric approach at tilted angle of 17°. The process was explained in previous studies (Saraji et al, 2013;Li et al, 2018b). The substrate was positioned in an optical cell, and two high-precision ISCO syringe pumps, a Teledyne ISCO D-260 product with a pressure accuracy of 0.01%, were used for injecting decane or brine at different pressure and temperature conditions.…”

Section: Contact Angle Measurement Proceduresmentioning

confidence: 99%

The effect of methylene blue and organic acids on the wettability of sandstone formation: Implications for enhanced oil recovery

Alhammad,

Ali,

Yekeen

et al. 2023

Capillarity

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Fossil fuels are the primary global energy source, and their improved production will ensure a balance between the increasing energy demand and supply. Chemical-enhanced oil recovery has been well thought of as a promising method for increasing hydrocarbon production. However, the effectiveness of this method depends on wettability of rock-oilbrine systems' Previous studies have shown that oil-wet rock demonstrated a water-wet state when treated with surface active chemicals like surfactants, nanofluids. Moreover, increasing attention has become focused on the application of hazardous pollutants such as methyl orange and methylene blue to enhance the CO 2 /H 2 containment security of the host rock by altering its wettability. Nevertheless, the capacity of methylene blue to modify the rock wettability for the production of trapped hydrocarbons in sandstone reservoirs is yet to be explored. Thus, in the present study, methylene blue is used as a wettability modifier to enhance the oil production from quartz rocks that have been aged with stearic acid solution (10-2 mol/L). First, the organic-aged quartz is treated with various concentrations of methylene blue (10-100 mg/L) for one week at 60 °C. Then, contact angle measurements are performed at different temperatures (25 and 50 °C) under various pressures (10-20 MPa) and brine salinities (0-0.3 M). Thus, the quartz is found to turn hydrophobic when aged in organic acid/n-decane solution at 20 MPa and 50 °C. However, when the rock is treated with various concentrations of methylene blue, the hydrophobicity is found to decrease, thus suggesting that oil recovery will be promoted by methylene blue treatment. Overall, the results demonstrate that the most favourable condition for reducing the hydrophobicity of the sandstone rock is via treatment with 100 mg/L methylene blue. Hence, the injection of methylene blue into deep underground sandstone reservoirs has the potential to produce more residual hydrocarbons.

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The effect of N-ethyl-N-hydroxyethyl perfluorooctanoamide on wettability alteration of shale reservoir

Cited by 8 publications

References 32 publications

Measurement of Shale Wettability Using Calorimetry: Experimental Results and Model

Measurement of Shale Wettability Using Calorimetry: Experimental Results and Model

Janus Biopolymer Sponge with Porous Structure Based on Water Hyacinth Petiole for Efficient Solar Steam Generation

The effect of methylene blue and organic acids on the wettability of sandstone formation: Implications for enhanced oil recovery

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