Child Model Development - Getting Started

This section will cover how we can generate black-oil tables or lumped compositional models (commonly refered to as child models).

Naturally, you could simply download the entire 42-component EOS you have now created, but those files would be extremely computationally demanding in simulations, which is why we generate simplified versions that are still able to capture the fluid behavior. Given that these are generated from the 42-component EOS (42EOS), we refer to that 42EOS as a 'Parent Model', and the simplified versions as 'Child Models'.

Black-Oil Tables

A Black-Oil Table, or BOT, is a simplified method to provide the fluid qualities, where the oil and gas have been lumped together into single individual components. Given this simplification the results from BOTs may deviate significantly in certain instances. It becomes especially difficult to capture complex fluid behaviour, such as near-critical fluids or around the near-critical point. In these cases, it is therefore advised to run a compositional simulation as well to compare the results and estimate if BOT are useable for predictions.

You can find the guide to generating BOT here

Lumped EOS Models

Given that it would require a lot of computational demand to run 42-component compositional simulations, it is common to group fluid components together into 'lumping schemes' or pseudo-components. These lumped EOS models are therefore also often called pseudoized models

The lumping models guide you will find here