The name “type curve” derives from the 1970’s when it was used to describe a log-log dimensionless graph used for pressure transient analysis. Data for these dimensionless graphs derived from analog solutions of the flow equations, and sometimes from reservoir simulation. To avoid confusion, experts like Dr. John Lee recommend a best practice of reserving the term type curve for dimensionless display and analysis of the flow equations.

Modern day examples are Wattenbarger’s and Fetkovitch’s type curves for combined linear and boundary dominated flow.

It is not uncommon for industry to use the term “type curve” for what we define as a type well profile.  Another related term, type well is a complete modelling element for a typical, repeatable project, often used in unconventional resource planning.