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.