Grane field

A. Carrillat and B. Valles (2004) Prom 3d seismic facies to reservoir simulation an example from the Grane field. This volume. 

Prom 3D Seismic Facies to Reservoir Simulation An Example Prom the Grane Field... 

Finally, in the third part, an application of the new workflow is presented. To this end, a case study for the Grane field is used. The selected simulation scenario models a three-phase reservoir life. 

The general workflow of this new paradigm is now illustrated by a case study of the Grane field in the Norwegian sector of the North Sea. The seismic facies are related to lithologies by means of well log data and are then used to voxelize the grid with rock physical properties. Finally the dynamic part is covered with streamline simulation. 

The multi-component data have been classified into seven t3q>es of seismic facies. These facies include flat parallel continuous high amplitude, flat parallel continuous low amplitude, discontinuous low amplitude, discontinuous high amplitude, dipping continuous, transparent facies and chaotic patterns. Seismic facies analysis and direct comparison of the acoustic mode (PP) and the converted mode (PS) show that in parts of the Grane Field the converted... 

In order to test the new proposed workflow from seismic to simulation on the Grane field, it has been decided to use standard rock physical transforms together with information given by the three-dimensional seismic facies, to obtain porosity and permeability values required as input for simulation software. The challenge faced is to determine how to use the information given by the three-dimensional seismic facies. 

Table 1. Porosity for the Grane field. From weU data information three-dimensional seismic facies have been linked to lithologies, each of them having typical porosity values. Some differences have been noticed between the south part and the north part of the reservoir. Three dimensional seismic facies (1) Flat continuous high amplitude, (2) Flat continuous low amplitude, (3) Discontinuous low amplitude, (4) Discontinuous high amplitude, (5) Transparent, (6) Dipping continuous reflector, (7) Discontinuous-chaotic. NA no available values.

A new methodology for building reservoir models from seismic data based on three-dimensional seismic facies has been demonstrated on the Grane field. This new approach enables a workflow from seismic domain to simulation domain, by bridging the two close together through the voxelization process. 

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