In this study, we used a polyacrylamide polymer crosslinked by Chromium III cross linking agent. The used simulated formation water has a salinity of 40000mg/L. To synthesize an appropriate gel that will respond to reservoir conditions and requirements, we tried to optimize the crosslinker concentration, the polymer concentration and the delaying agent concentration by taking into account the given reservoir condition. We used the cross linking with different concentrations which are 25mg/L, 50mg/L, 75mg/L, 100mg/L, 125mg/L, 150mg/L, 25mg/L and 200mg/L. After the cross linker concentration was ascertained, we try to optimize the polymer concentration by changing its value into the following values 3000mg/L, 3500mg/L, 4000mg/L and 4500 mg/L with the ascertained value of cross linker. After ascertaining the crosslinker and polymer concentration, the delaying agent has been ascertained. To ascertain the delaying agent concentration, we used the delaying agent (thiourea) - cross linker ratio in the following values 0.2:1, 0.4:1, 0.4:1, 0.6:1, 0.8:1, 1:1. During these experiments, the used materials for viscosity measurement is a rotational viscometer.