Antenna apparatus and method for insulating
AssigneeBaker Hughes Incorporated
InventorThomas Kruspe
Life of this patent
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Abstract
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.
Claims20
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.
A method for insulating an antenna apparatus, the method comprising:
- coupling a transition piece to a bulkhead, wherein the bulkhead comprises a first conductive path electrically coupled to a second conductive path in the transition piece;
- coupling an antenna cable to the transition piece, wherein the antenna cable comprises a third conductive path electrically coupled to the second conductive path;
- and
- disposing an electrically insulating polymer on the bulkhead, transition piece, and antenna cable, wherein the electrically insulating polymer is disposed by extrusion.
A downhole antenna apparatus, comprising:
- a bulkhead comprising an electrically insulating material;
- a transition piece coupled to the bulkhead, the transition piece comprising the electrically insulating material;
- and
- an antenna cable coupled to the transition piece, wherein the antenna cable comprises a conductive path extending through the transition piece and the bulkhead, the antenna cable comprising the electrically insulating material and the conductive path insulated by the electrically insulating material, wherein the electrically insulating material can mechanically withstand up to about 30,000 psi and does not chemically decompose at temperatures up to about 200 degrees Celsius.
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 does not flow at temperatures lower than 200 degrees Celsius.
Dependencies are inferred from the claim text.