METHOD FOR CREATING FACIES PROBABILITY CUBES BASED UPON GEOLOGIC INTERPRETATION

摘要

A method for creating a facies probability cube is disclosed. A S-grid
containing facies is first created. The grid includes layers of cells and
columns of cells. Vertical facies proportion data for the layers of cells is
derived from sources such as well data, conceptual vertical geologic sections
and graphs describing the proportion of facies found in each of the layers.
Areal depocenter maps are created which have defined boundaries to create
depocenter regions in which respective facies are likely to occur. Ideally,
the boundaries for the depocenter regions for each of the facies are
sequentially and independently defined. Horizontal or map facies proportion
data are generated for the columns of cells preferably by filtering the
depocenter regions so that the proportion of each of the facies ranges from a
maximum value to a minimum value. The vertical and horizontal facies
proportion data are then integrated to create a facies probability cube in
which the cells are assigned probabilities for the occurrence of facies.