Fluid flow modelling with seismic cluster analysis

Laurence R. Bentley, Xuri Huang and Claude Laflamme

ABSTRACT

Cluster analysis is used to construct fluid flow zones from seismic attributes. The steps are: 1. Remove grid points that contain outliers in any seismic attribute; 2. Scale each attribute to zero mean and unit variance; 3. Use principal component analysis to transform the scaled attributes to uncorrelated principal component attributes; 4. Principal component attributes are grouped into categories of similar seismic response using cluster analysis; 5. Upscale the seismic grid to the computational grid scale using a weighted voting procedure (morphing); 6. Spatially filter cluster assignments to remove small, isolated spots using a weighted voting scheme; 7. Assign a seismic zone to spatially connected elements with the same cluster category. Using a Gulf of Mexico test case, the zoning procedure produced useful computational zones and reduced the time required for history matching.

View full article as PDF (1.39 Mb)