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Relative permeability data are a key component in reservoir characterization, understanding
reservoir behavior, and predicting recovery factors in EOR projects such as water
floods. Relative permeability data are a critical input parameter for reservoir
simulators. The data are very expensive to acquire and in many cases are not readily
available, such as in: 1) old fields, 2) acquisition candidates, and 3) fast-track
reservoir simulation of discovery wells. In these cases, the reservoir engineer
is often left with his or her "best estimate" of residual oil, relative permeability,
water cut curves, and recovery factors. However, the uncertainty and risk involved
in making these estimates can be greatly reduced by having a relative permeability
database that can be accessed to acquire the statistics and probability of these
key parameters from analogs.
The Integrated Reservoir Solutions Division of Core Laboratories is offering to
interested companies participation in the development of a searchable Relative Permeability
Database for the purpose of enhancing operator's prediction of reservoir behavior.
The primary objective of this project is to provide reservoir engineers with a large
relative permeability database (RPD) that is easy to search, allows analysis of
the data, and permits data to be extracted to other applications.
The various data types that will be included in the database consist of all those
normally associated with gas-water, water-gas, water-oil, oil-water, and gas-oil
relative permeability measurements. These include basic porosity, air permeability,
effective gas permeability, effective oil permeability, effective water permeability,
initial water saturation, residual oil saturation, oil recovery factor, residual
gas saturation, and full relative permeability curves.
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