... floods. The main conclusions of the study are 1) Wettability alteration in the carbonate rock tested to a more water-wet state by tuning the ionic concentrations of injection brine; 2) Zeta potentiometric studies with low-salinity waterflood (LSWF) in carbonate reservoirs can achieve positive results...

... and contact angle upon addition of alkali shows synergism in interfacial properties and wettability alteration. The ETA–SCA system yielded a better synergy in IFT reduction (minimum IFT of 4.73 × 10 -2 mN/m) and wettability alteration (contact angle of 3° in 600 seconds) than the Na 2 CO 3 –SDS system...

... by the injection of smart water with a high concentration of sulfate ions combined with silica nanoparticles with a concentration of 0.1 wt.%. The addition of silica nanoparticles to smart water improves the wettability alteration mechanism, as well as increasing the fluid viscosity and affecting the sweep...

... Abstract Various type of nanoparticles has been studied in last decade for improve oil recovery purpose and observed its mechanisms of displacing oil concluded as disjoining pressure that involved wettability alteration, log-jamming, and viscosity effect. This paper focus on the investigation...

..., rather than the pulverized samples. The streaming potential technique was used for the zeta potential measurements and the experiments were conducted under different modified brine composition and rock saturation conditions. Subsequently, wettability alteration experiments were conducted using...

... Reservoirs. Energy Fuels , 28 (11) : 6749 – 6759. Delshad , M. , Najafabadi , N. F. , Anderson , G. A. , Pope , G. A. , and Sepehrnoori , K ., 2009 . Modeling Wettability Alteration in Naturally Fractured Reservoirs , SPE Journal , 12(3) : 361 – 370 . Diab , W. N...

... formation water. Not only were the polymer retention and permeability reduction by the polymer adsorption phenomenon analyzed with the measured pressure difference and ultraviolet-visible spectroscopy, but the wettability alteration during the LSPF was also examined by the relative permeability and contact...

... such as water salinity, the concentration of active ions, and HPAM solutions concentration are experimentally studied to achieve the optimized rheological behavior. The different diluted water compositions of Caspian Sea water were prepared to identify the best solution in terms of wettability alteration...

... of nanoparticles on wettability alteration. The efficiency of various formulated zirconium-oxide (ZrO 2 ) based nanofluids at different nanoparticle concentrations (0-0.05 wt. %) was assessed through contact angle measurements. Results from the experiments showed ZrO 2 nanofluid have great potentials in changing...

... Wettability is always an important issue for reservoir engineers. Wettability alteration is one of the significant indexes to show the capability of oil recovery of reservoir. In the recent years, various approaches to change wettability have been suggested by scientists and researchers...

... contributing mechanism for oil recovery improvement by surfactant flooding is rock wettability alteration. Wettability is a one of the proper index in choosing the best approach for a successful surfactant flooding which tiny change in wettability alteration will lead to improve oil recovery...