Antenna apparatus and method for insulating

摘要

In one aspect, a method for insulating an antenna apparatus is provided, the method including coupling a transition piece to a bulkhead, wherein the bulkhead includes a first conductive path electrically coupled to a second conductive path in the transition piece and coupling an antenna cable to the transition piece, wherein the antenna cable includes a third conductive path electrically coupled to the second conductive path. The method further includes disposing an electrically insulating polymer on the bulkhead, transition piece, and antenna cable, wherein the insulating polymer is disposed by extrusion.

主权项

1. A downhole antenna apparatus, comprising:
a bulkhead; a transition piece coupled to the bulkhead; an antenna cable coupled to the transition piece, wherein the antenna cable is electrically coupled to a conductive path in the transition piece and the bulkhead; and an electrically insulating coating disposed about the bulkhead, transition piece, and antenna cable, wherein the electrically insulating coating comprises a single piece configured to withstand at least about 300 bar of pressure outside the downhole antenna apparatus wherein the electrically insulating coating prevents fluid flow into the downhole antenna apparatus.