| Popis: |
Following on from the work by Tang and Morrow in 1998, enormous progress has been made in the development of low salinity water flooding for improved oil recovery, (IOR). This paper has assessed the applicability of modified salinity as an IOR scheme in the Niger Delta. A laboratory approach which entailed the use of crude oil, brine and core plugs from fields X and Z located in the Niger Delta was adopted. Several options were assessed: progressive dilution of the injected brine, variation of concentration of divalent cations in the injection fluid, high salinity flooding followed by low salinity flooding (HSF, LSF) and variation of low salinity slug size. The results obtained are very promising as additional recoveries in the order of +5% to 21% were obtained from this work. Based on the promising results of this on-going research, recommendations on future improvements were also outlined. |
