Class Diagrams

ESP Detail

An ESP, or Electric Submersible Pump, is perhaps the most versatile of the major oil-production lift methods. A typical ESP system comprises a down-hole centrifugal pump, submersible motor, electric power cable, and surface controls. Both drilling and production platforms include ESP.

The Class Diagram shows the attributes of typical ESP System Components which are:

Control Panel - A motor control device on the surface (could be either a switchboard or a Variable Speed Drive). The measured operating properties of the Control Panel are held in the Control_Panel_Oper_Pty class.

Transformer This provides appropriate voltage to the down-hole motor. The measured operating properties of the Transformer are held in the Transformer_Oper_Pty class.

ESP Cable: This is for both the Main Power Cable and Motor Lead Extension Cable. The Main Power Cable provides the electric power to the down-hole motor. The Motor Flat Cable is the lowest section of the power cable string.

ESP Intake - It provides for fluid entry into the pump. Pump Intakes are of usually if two types - Standard and Gas Separator Intakes.

ESP Motor - The ESP systems prime mover is a submersible motor.

ESP Pump - The ESP is a multi-stage centrifugal pump. The ESP Pump has zero or more Stage Configurations.

ESP Protector - An ESP Protector is a device that provides protection to the ESP motor by preventing well fluid from reaching it. It also serves as an oil reserve for the pump, balances the internal pressure of the well fluid and carries the thrust load of the pump.

Note that ESP class refers to the complete ESP system composed of ESP components which can be grouped together using Facility Composition.