Cable Insulation

As per API RP11S5, cable insulation isolates the electrical potential between conductors and other conducting materials. Insulation also minimizes leakage current from the conductors.

Insulation selection depends on many factors mainly related to produced fluids properties and well behavior; such as: gas type and concentration, well environment, gas to oil ratio, pressure cycling, exposure to downhole chemicals…

There are two classes of cable insulation materials used in oil and gas industry:

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Cable Conductors

The AC current is carried from the surface to the motor using either copper or aluminum cable conductors. For ESP applications, four sizes of conductors have been standardized: #1, #2, #4 and #6 AWG.

AWG stands for “American Wire Gauge”.

Power losses and operating temperature decrease by increasing the conductor size for a given current. Moreover, for a given conductor size increasing current will increase both the power losses and cable operating temperature.

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Updated list of API and ISO Standards for ESP

In this article, the last updated list of API & ISO standards for electrical submersible pump is presented. These standards can be considered as reference documents as well as a basis for training classes in the subject of electrical submersible pump.

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