ABSTRACT
It is common practice in the oil industry to try to eliminate deviations between measured and simulated PVT data by adjustment of model parameters. This tradition dates back to a time when extended compositional analyses were rare. With a composition ending at C7+ or even C6+, and no established procedure to split up the plus fraction, it was unlikely to see accurate predictions of PVT properties. Coats (1982) has presented an extensive work on how to perform a pseudorization with a composition to C6+ or C7+ as the starting point.
