QC of sim2seis modelling

QC should include:

• Value range of results. If there are grids, cubes, or attribute maps with unreasonable values, this may indicate that an input has been provided with an unexpected unit (it is generally assumed that all inputs use SI units).
• pem can be configured to save intermediate results, such as effective mineral and fluid properties. These represent the initial step in the process and can serve as the first point of verification.
• Inputs should also be validated, i.e., the eclipse .INIT and .UNRST files, as well as volume fraction grids from the geomodel. For example, low-pressure outliers in eclipse runs can lead to errors in fluid property estimation.
• Comparison between the primary influencing factors of 4D response, i.e., changes in pressure and saturation, correlated to the seismic amplitude or relative acoustic impedance response.

The documentation for pem provides more detailed information on the process of calibrating rock physics models. Much of the workflow in sim2seis is less dependent on parameter settings, except for the Seismic Forward modelling component. It is important to understand the settings in the XML model files and conduct tests to optimise parameters.

There are several options available for QC of results from sim2seis, and the workflow is not restricted to any specific application. Earlier versions of sim2seis were an integrated part of RMS © Aspen Tech.