Laboratory Study on the Potential EOR Use of HPAM/VES Hybrid in High-Temperature and High-Salinity Oil Reservoirs

Figure 4

Recovery factor, water cut, and flooding pressure plotted as a function of injected volume of the samples: (a) P30, (b) E30, (c) P15E15, and (d) P10E20 (TDS = 32,868 mg/L, [Ca²⁺] + [Mg²⁺] = 873 mg/L; injected volume = 30% PV; injected rate = 0.23 mL/min).

(a)

(b)

(c)

(d)