A Correlation of Oil Recovery Factors for Water-Drive Reservoirs in the Niger Delta

A,s i.mpI e correlation has been .developed for estimating primary

"recovery facto;rs for Niger Deltaoil reservoirs~The correlation

,. which was developed, from data collected across the Niger Delta,

'is valid for reservoirs with strong, wa~ter d'r Lves.

.. " I~

, ' ,

Only two major parameters are r equi r-ed ,for 'the recovery factor

"calculations . in this" work, ',unlike other multi-parameter

correlations. This 'makes t.hLs rco.rr'eLat.Lonvery easy to apply. An

expression has also beeri included for predicting residual oil

'saturation, where core or log analysis data are' not avai.Labl e ,

,- . . '" . ~ . , . . The results obtalned uSlng these models have been compared wlth

other published models, and applied to many case studies, with

better predictions. Graphical and statl.stical error analyses also

confirm good correlations.

These correlations should also, yield good predictions for

reservoirs from other~regions that have similar reservoir and

fluid characteristics.

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