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Enterprise Model Patterns: Describing the World (UML Version) by David C. Hay

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Figure 21-1 shows the architectural model for Facility, as understood by the oil industry. The basic sub-types in this world are Surface Facility and Sub-surface Facility. As the name suggests, a Surface Facility is implemented via a collection of equipment for doing the preliminary processing of crude oil and gas, once it is removed from the ground.

The primary sub-type shown here is a Manifold, although there are certainly many Other kinds of Facility, as well. For those of you not in this industry, a Manifold is “An arrangement of piping or valves designed to control, distribute, and often monitor fluid flow.”[76] This is the collection of pipes at the top of the well that directs fluids in the various directions required ...

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