COMPARATIVE ANALYSIS OF LOCAL MATERIALS FOR ENHANCED OIL RECOVERY (EOR)
Abstract
A comparative analysis of local materials in enhanced oil recovery (EOR) was evaluated to
determine which one is more effective and efficient. Core flooding was carried out with four local
materials which are Okro (polymer), Ogbono (polymer), Bunch-Ash (Alkali) and Moringa Leaf
(surfactant) to determine the displacement efficiency of different proportions of local materials on oil recovery. An economic analysis was carried out using Net Present Value (NPV) as the profit
indicator. Okro gave the highest displacement efficiency of 21.91% when compared to Ogbono
and Bunch-Ash with the same amount of concentration. Also, Okro has the highest oil recovery of
74.29% when compared to Ogbono, Bunch-Ash and Moringa Leaf. The oil displacement results
showed that these local materials are capable of recovering residual oil from the reservoir with
Okro having a displacement efficiency and recovery efficiency of 74.29% and 21.91%
respectively, Ogbono having a displacement efficiency and recovery efficiency of 65.19% and 15.47% respectively, Bunch-Ash having a displacement efficiency and recovery efficiency of 66.23% and 16.56% respectively, Moringa Leaf having a displacement efficiency and recovery
efficiency of 71.49% and 29.51% respectively. The NPV for all the local materials (Okro, Ogbono,
Bunch-Ash and Moringa) are positive, hence using these local materials pays for the cost of
financing the investment. Okro is more profitable with an NPV of N 810.4.
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