Results 211 to 220 of about 4,206 (242)
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A distance-based capillary biosensor using wettability alteration
Lab on a Chip, 2021A visual quantitative distance-based biosensor through capillary action is proposed, which converts the wettability changes caused by the target molecules into a capillary rise height signal without any manufacturing technology.
Yansheng Li +5 more
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Proppant Upgrade by Wettability Alteration
International Petroleum Technology Conference, 2016Abstract Proppant plays a key role in maintaining fracture conductivity during well production. Silica sand is by far the most commonly used proppant due to its low cost and availability. However, some of frac sands, especially Tier 2 sand, are not always satisfactory under formation conditions.
Chuanzhong Wang +4 more
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Wettability Alteration with Weak Acid-Assisted Surfactant Flood
SPE Journal, 2022Summary Oil-wetness and heterogeneity are two key reasons for low oil recovery by waterflooding in carbonate reservoirs. Surfactants have been effective in altering the oil-wet matrix to a more water-wet condition and initiating spontaneous imbibition.
Yue Shi, Fangya Niu, Kishore Mohanty
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Nanofluids Alter the Surface Wettability of Solids
Langmuir, 2015We report the results of our studies on the changes in the contact angle and interfacial tension using a nanofluid composed of silica nanoparticles dispersed in water on three different solid substrates: gold (partially hydrophobic), glass (hydrophilic), and a silicon wafer (hydrophilic).
Sangwook, Lim +3 more
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Wettability Alteration of Calcite by Nonionic Surfactants
Langmuir, 2018The process of selecting an effective surfactant for wettability alteration is dependent on a number of factors, including mineral type, temperature, salinity, and nature of adsorbed oil and ultimately how the molecular structure of the surfactant interacts with all of these.
Soumik Das +4 more
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A Review on Wettability Alteration in Carbonate Rocks: Wettability Modifiers
Energy & Fuels, 2019More than half of the global oil reserves are in carbonate reservoirs. Carbonate rocks, however, in most cases tend to be mixed-wet or oil-wet.
Xiao Deng +4 more
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Flow Instability Associated With Wettability Alteration
SPE Annual Technical Conference and Exhibition, 2007Abstract Wettability of a reservoir rock can be altered by changing brine composition, e.g., lowering salinity, adding surfactants. Wettability alteration can mobilize stranded oil and enhance oil recovery. Analytical solution for 1D tertiary low salinity flood shows two saturation shocks one of which is associated with an adverse ...
Ila Tripathi, Kishore Mohanty
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Wettability Alteration with Silica Aerogel Nanodispersion
Journal of Dispersion Science and Technology, 2013This work studies the wettability alteration using nanoporous silica aerogels for enhanced oil recovery. Water wet flat glass and outcrop sandstone are used for this aim. Modified silica aerogels are synthesized with cheap water glass as the precursor, and ambient pressure drying method.
H. Bargozin, J. S. Moghaddas
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Wettability Alteration of Fractured Carbonate Reservoirs
SPE Symposium on Improved Oil Recovery, 2008Abstract Oil can be recovered from fractured, initially oil-wet carbonate reservoirs by wettability alteration with dilute surfactant and electrolyte solutions. The goal of this work is to study the effect of salinity, surfactant concentration, electrolyte concentration, and temperature on the wettability alteration and identify ...
R. Gupta, K. K. Mohanty
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Characterization of Ultrasonic-Induced Wettability Alteration under Subsurface Conditions
Langmuir, 2021Understanding and manipulating wettability alterations has tremendous implications in theoretical research and industrial applications. This study proposes a novel idea of applying ultrasonic for wettability alterations and also provides its quantitative characterizations and in-depth analyses.
Hengli Wang +5 more
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