MODELLING AN EMPIRICAL EQUATIONS FOR ANALYSING RELATIVE
PERMEABILITY IN THE NIGER DELTA (XYZ) RESERVOIRS.
1Akpoturi
Peters and 2 Henry Idudje
1,2 Department of Petroleum
Engineering
1,2 Federal University of
Petroleum Resources, Effurun
Email: Petersakpoturi1212@gmail.com
Abstract: Relative permeability for a fluid is the
relative flow of that fluid when its saturation in the reservoir rock is less
than a hundred percent. It is also the ratio of effective to absolute
permeability at a given saturation condition of the rock pore spaces and the
wetting characteristics of the fluid/rock surfaces. Direct relative
permeability data is very difficult to determine for the Niger Delta reservoirs
because of.
—
Problems connected with obtaining
sufficient and representative data for the area;
— No comprehensive work on this determination
has so far been done in the area;
— Existing correlations from literature gives
inaccurate values for the area.
In this investigation,
empirical equations for two phase relative permeability data (oil/water,
gas/oil systems), are developed by processing a large set of core data samples
from special core analysis of various wells of the Niger Delta reservoirs.
The generalized
empirical equation:
Krf = RWeλs, serves as a:
—
First estimate of the relative
permeability values for Niger Delta reservoirs which have little or no
available data information.
—
Means of cross-checking relative
permeability values obtained through other methods.
—
Means of obtaining the relative
permeability data when good estimate of fluid saturations are possible.
—
Good and economical starting set of
relative permeability data during history matching phase of reservoir
simulation for the Niger Delta reservoirs.
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