Method for determining barriers to reservoir flow

Details Method for determining barriers to reservoir flow Method for determining barriers to reservoir flow

1997-01-31

1998-11-10

McElheny, Jr., Donald E.

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Earth science

702 13, 702 16, G06F 1900

Patent

active

058358820

ABSTRACT:
A method and apparatus for predicting barriers to fluid flow in a subterranean reservoir using well data and 3-D seismic data are disclosed, where a preferred first step in the method models petrophysical properties of the reservoir to provide model logs which are expressible as continuous curves of a reservoir property as a function of depth. The next step selects individual data points on the continuous curves, which traverse a subterranean layer, and assigns a flow or nonflow state to each data point based on comparing a threshold value of a reservoir property with the value predicted by the data point. The layer is divided into a multitude of subvolumes each containing a single data point, and then a connectivity factor, which considers multiple flow paths around each data point, is calculated for each subvolume. The subvolumes are then grouped into larger volumes called simulation cells, and directional flow numbers are assigned to the cells relative to three mutually perpendicular x, y and z coordinate axes, such that display of the directional flow numbers for a group of cells demonstrates flow barriers and flow paths in the reservoir.

REFERENCES:
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patent: 4991095 (1991-02-01), Swanson
patent: 5487001 (1996-01-01), Neff
patent: 5563949 (1996-10-01), Bahorich et al.
patent: 5583825 (1996-12-01), Carrazzone et al.
U.S. Patent Application Serial No. 08/457,929, filed Jun. 1, 1995.

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