Results 151 to 160 of about 17,730 (190)
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A Model for Wettability Alteration in Fractured Reservoirs
International Petroleum Technology Conference, 2013Abstract Many of the world's oil reservoirs are naturally fractured. Injected water will flow into this highly permeable network and not sweep the matrix containing most of the oil. Spontaneous imbibition can drive oil into the fractures by capillary forces.
Pål Østebø Andersen +3 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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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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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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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 in a Tight Oil Reservoir
Energy & Fuels, 2013In fractured reservoirs, the efficiency of water flood is governed by spontaneous imbibition of water into oil-containing matrix blocks. When the matrix is oil-wet or mixed-wet, little oil can be recovered by imbibition. The objective of this work is to identify chemicals that can be added to the injection water that can induce imbibition into an ...
P. Kathel, K. K. Mohanty
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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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Wettability Alteration of Carbonate Rock by Chelating Agents
Gas & Oil Technology Showcase and Conference, 2023Abstract The two most important EOR mechanisms for oil-wet carbonate rock are IFT reduction and wettability alteration. By altering rock surface wettability, the resulting positive capillary pressure can help imbibe water and displace oil from the rock matrix.
Xiao Deng +7 more
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The Effect of Fluoropolymer on Wettability Alteration of Sandstone at Elevated Temperatures
Journal of Surfactants and Detergents, 2016AbstractGas condensate reservoirs are generally recovered using a pressure depletion drive. Gas can condensate into the liquid phase near the wellbore region when the reservoir pressure falls below the dew point pressure, which can kill gas deliverability.
Jin, Jiafeng +4 more
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Reproduce Wettability Alteration of Low-Permeable Outcrop Chalk
Proceedings of SPE/DOE Improved Oil Recovery Symposium, 1998Summary A total of 41 chalk core plugs, cut with the same orientation from large blocks of outcrop chalk, have been aged in crude oil at 90 °C for different time periods, in duplicate sets. Different filtration techniques, filtration temperatures and injection temperatures were used for the crude oil.
A. Graue, B.G. Viksund, B.A. Baldwin
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