Key to the modelling of production systems is the quick and accurate
integration along well tubings, pipelines/flowlines and risers.
Mathematically these objects are all distributed flowpaths where the
fluids flow in at one end and leave through the other, and are described
by the same fundamental equations (i.e. conservation equations for mass,
momentum and energy). Of the numerous calculations performed by Maximus,
these kinds of integrations are perhaps the most computationally expensive.
Considerable effort has therefore been expended to make these operations very
fast and robust.
This section provides an overview of Maximus capability in this area. The discussion is
confined to single operations.
Essential to the modelling of multiphase flow along well tubings, pipelines and risers
is supplying a representative topographical profile (i.e. elevation versus distance).
To aid the definition of the profile, Maximus has an inbuilt profile generator where the
User supplies a minimum set of elevation and distance points and the profile generator
fits a smooth path through these points.
By way of illustration, two examples of Maximus performing integrations along pipelines
are provided. The first example is of a simple 1km pipeline connecting a source to a sink and
the second example is of a single well tieback to a fixed platform:
Large Network Example Screenshot