POWER TRANSMISSION SYSTEM FOR USE WITH DOWNHOLE EQUIPMENT.

摘要

A power transmission system for use with downhole equipment in a borehole, comprising a power source positioned at the surface providing a DC power supply and a downhole DC/DC converter, connected to the power source by a two-conductor cable and which takes the DC voltage supply as an input and provides an output DC supply at a different voltage to the DC power supply for provision to the downhole equipment.