Mosab Badr Aldin AlBredi
JPME volume 18 (1) June 208
In this research, a lab study was conducted on the process of injection a solution ofIn this research, a lab study was conducted on the process of injection a solution of Sodium Hydroxide (NaOH) into a lab-prepared a matrix IViarbie model that physically simulates the reservoir properties of the Jeribeh producing formation in DERO ou field. The Sodium Hydroxide (NaOH) solution is chosen due to its efficiency in studying aikaline. The injection operation of the alkaline was peiformed on the rock model using the volume ratios (15, 30 and 50% P”!), (% P”! that represents ratio of the injected liquid to the pores volume of the model), to guarantee an efficient displacement. The injection process was continueci at each ratio using the displacement fluid until reaching the 250% PV level. Through the results of the displacement processes, the change of the following factors in relation with was graphically studied:
where, Oil Displacement Factor (O.F.D), Water ratio in the produced fluid, (W) and: ratio of the produced oil volume at every injection process to the accumulated volume of the injected fluid at the same stage, (R.aV_O/V_T).
To compare the displacement efficiency using Sodium Hydroxide with the efflciency of water injection (currently applied in DERO field), the model was flooded by (250% P”!) of water aller it was cleaned with kerosene, then dried and re-saturated with oil. A comparison between the change of die factors when injecting water and injecting Sodium Hydroxide solution was graphically performed.
The results of the graphical comparison of both injection methods implied a steady increase of the (O.F.D) and (R.a) factors and a decrease of the water ratio produced with oil when injecting (NaOH) solution at all die studied injection ratios when compared with water flooding.
Improved oil recovery, Alkaline Flooding, Oil Displacement Factor and water flooding
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