Nineteen well test models grouped by where they show up in time. Pressure change and the Bourdet derivative tell you what the wellbore, the reservoir, and the boundaries are doing. Match the shape, then read the numbers.
Straight lines on a log-log derivative are flow regimes. Their slope names the regime, and the level of a flat derivative sets the flow capacity. Every model in the catalog is read against these.
Grouped by region: the wellbore and near-well effects first, the reservoir next, the boundaries last. Open any model for the full annotated chart and what it lets you compute.
A real log-log response is a sequence in time: the near-well effect, then the reservoir, then the boundary. Pick one of each and watch the composite build, with the pressure derived from the derivative so the two stay consistent.