apparatus for pumping well fluid, and for producing well fluid, and method for supplying power to a submersible motor from a submersible pump assembly.

摘要

APPLIANCE FOR PUMP FLUID, AND FOR PRODUCING PIPE FLUID, AND METHOD FOR SUPPLYING A SUBMERGABLE MOTOR OF A SUBMERGABLE PUMP ASSEMBLY The power cable for a submersible electric pump has three waterproof metal tubes (35). A single electrical conductor (28) is disposed within each of the tubes. Each conductor has at least one elastomer insulating layer (30) around it. An annular portion of the insulating layer of each of the electrical conductors is in close contact with the pipe to form a seal. The annular portions may be annular corrugations 37 formed in the pipes at intervals. The annular portion may also be a continuous seal caused by filling of the insulating layer due to contact with hydrocarbon.