this study examines the effects of change in the concentrations of monovalent and divalent ions in the polymer-contained surfactant solution on the macroscopic behavior of viscous-modified surfactant waterflooding in heavy oil reservoirs. salts that are used in this set of floods were sodium chloride, magnesium chloride, and calcium chloride. the results indicate that four different ranges of s...

The study of flooding gas condensate reservoirs at different stages depletion (25, 50, 75% the dew point pressure and maximum condensation pressure) with potential hydrocarbon content 100, 300 500 g/m 3 voidage replacement by using injection (50, 100 150%). results showed a positive effect water on increase recovery factor, but decrease in production compared to basic options development drive....

The fundamentals of scaling during waterflooding an oilfield are presented. Mineral precipitation is described using both the kinetics approach, with corresponding equations given, and thermodynamic models’ theoretical foundation discussed—mainly specific ion interaction Pitzer models. This paper focuses on process mixing incompatible waters water injection production from oilfield, as this was...

To study improved oil recovery (IOR) via laboratory experiments at the pore scale, we performed waterflooding in a glass 2.5D micromodel (dual depth: 12 and 27 μm) with crude (CRO) brines of variable compositions temperatures ranging from 22 °C (room temperature) to 90 °C. The time-dependent residual saturation (ROS) for various flooding aging protocols was extracted optical microscopy images e...