..., who continue to call for EOR costs to come down. The objective of this study was to test the ability of low-salinity waterflooding to improve oil recovery from low permeability sandstone reservoirs. Four types of tests were conducted: imbibition, interfacial, core flooding, and zeta potential tests...

... very limited. In this work, we explore the underlying mechanism behind the low salinity waterflooding effect (LSWE) in limestone rocks by investigating the role of divalent ions. This was achieved by implementing techniques such as contact angle and IFT measurements, zeta potential measurement...

... O 3 1.99 Upstream Oil & Gas PVP contact angle waterflooding zeta potential value zeta potential stability surfactant enhanced recovery concentration nanoparticle concentration dispersant precipitation wettability different concentration Oil Recovery silica nanoparticle...

... starts with small concentrations of the chelating agent EOR fluid to alter the wettability of the limestone surface to a more water wet condition through gradual surface rock dissolution. Zeta potential measurements as a function of chelating agent EOR fluid concentrations showed that increasing...