Method of determining saturations in a reservoir

Details Method of determining saturations in a reservoir Method of determining saturations in a reservoir

2011-05-03

2011-05-03

Nghiem, Michael P (Department: 2857)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Earth science

C702S011000, C166S250010, C166S250020, C166S163000

Reexamination Certificate

active

07937222

ABSTRACT:
A method of determining water saturations from a deep-reading resistivity measurement in a reservoir is provided including the step of estimating, through for example a reservoir simulation process, a spatial distribution of a parameter related to the water conductivity at locations beyond the immediate vicinity of wells penetrating the reservoir and combining the spatial distribution of a parameter related to the water conductivity with a spatial distribution of resistivity as obtained from the deep-reading resistivity measurement to derive a spatial distribution of water saturations at said locations beyond the immediate vicinity of wells, wherein estimation step may be iterative to minimize a mismatch between simulation and measurement.

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