Compared to sole gas flooding, foam flooding provides superior mobility control, enhanced sweep, and greatly improved oil recovery from depleted oil reservoirs. However, since most modern oil reservoirs are located at higher depths and further away…
The remediation of hydrocarbon contaminated soils is an active research field, in which different remediation technological approaches are currently under evaluation. In this research, a new technology based on a self-assembly…
A novel viscoelastic N2 foam (0.12% sodium dodecyl sulfate + 0.18% erucyl dimethyl amidopropyl betaine) with ultra-low interfacial tension and alkali-free was developed. With the conditions of Xinjiang Oilfield (45℃, c (salinity) = 7880 mg/L), the…
Miscible carbon dioxide (CO2) flooding is a well-established and promising enhanced oil recovery (EOR) technique whereby residual oil is recovered by mixing with injected CO2 gas. However, CO2, being very light and less viscous than reservoir crude…
This chapter deals with the issues of enhanced oil recovery (EOR) and special chemicals used for this purpose. Approximately 60-70% of the oil in place cannot be produced by conventional methods. EOR methods are gaining importance, in particular with…