Wikipedia
SimRefinery is a computer management simulation game designed to simulate Chevron Corporation's refinery operation. It was developed by Maxis in 1993.
SimRefinery was developed by Maxis after the success of SimCity. After rejecting several requests from companies, the team eventually agreed to make a prototype for Chevron. In the words of Will Wright:
The user's role in the simulation was the plant manager of a refinery. One of the things the user learned was about supply and demand and how it affects the financial situation.
As a commissioned business aid, it was not made available to the public.
SimRefinery resembled SimCity with different graphics, disasters and rules; the latter to represent oil tanker ports, petroleum storage and piping systems.