June 2016

Process Control and Instrumentation

A new solution to the challenges of crude selection and scheduling

The state-of-the-art approach to solving the crude selection and scheduling problem is to separate the two challenges.

The state-of-the-art approach to solving the crude selection and scheduling (CSS) problem is to separate the two challenges. Linear programs (LPs) are used for crude selection to calculate the optimal crude schedule for a given time frame, generally a month. The pipeline pumping schedule from a crude terminal to the refinery is generated by a simulation scheduling calculation. The disadvantage of this best practice process is that the crude selection LP is, by its nature, linear, continuous and static, and so are the results. It cannot utilize information regarding the estimated time of arrival (ETA) of specific crude cargo sizes at the harbor. As a consequence of this, the LP cannot use in

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