Apparatus for interfacing with a transmission path
View Patent ↗A downhole communication apparatus has a signal coupler disposed in an end of a downhole tubular component. The signal coupler has a transceiver portion and a conductor portion. A data conductor integrated into the downhole tubular component is operably connected at a junction to the conductor portion of the signal coupler. A peripheral electronic device is in communication with the conductor portion of the signal coupler, either through an electrical coil wrapped around at least part of the conductor portion of the signal coupler or direct electrical contact with the conductor portion of the signal coupler.
1. A downhole communication apparatus comprising:
a signal coupler proximate an end of a downhole tubular component, the signal coupler comprising a transceiver portion and a conductor portion;
a data conductor integrated into the downhole tubular component and operably connected at a junction to the conductor portion of the signal coupler;
an electrical coil wrapped around at least part of the conductor portion of the signal coupler and in communication with a peripheral electronic device;
wherein the peripheral electronic device is in communication with the data conductor through the electrical coil.
2. The apparatus of claim 1 , wherein the electrical coil is electrically isolated from the conductor portion of the signal coupler.
3. The apparatus of claim 2 , further comprising a dielectric material intermediate the electrical coil and the conductor portion of the signal coupler.
4. The apparatus of claim 1 wherein the electrical coil comprises at least one turn of wire around the conductor portion of the signal coupler.
5. The apparatus of claim 1 wherein the electrical coil is disposed in a magnetically conductive material.
6. The apparatus of claim 1 , wherein the electrical coil comprises a direct electrical connection to the conductor portion of the data coupler.
7. The apparatus of claim 1 wherein the signal coupler is selected from the group consisting of inductive couplers, direct-contact couplers, fiber optic couplers, and combinations thereof.
8. The apparatus of claim 1 wherein the data conductor is selected from the group consisting of wires, coaxial cables, triaxial cables and combinations thereof.
9. The apparatus of claim 1 wherein the peripheral electronic device comprises at least one device selected from the group consisting of integrated circuits, pressure sensors, temperature sensors, actuators, piezoelectric devices, torque sensors, gyroscopes, inclinometers, accelerometers, chemical sensors, vibration sensors, discrete circuit elements, processing elements and combinations thereof.
10. The apparatus of claim 1 wherein the peripheral electronic device is located in the wall of the downhole component, in the bore of the downhole component, affixed to the outside of the downhole component, or combinations thereof.
11. The apparatus of claim 1 wherein the downhole component is part of a downhole tool string.
12. The apparatus of claim 11 , wherein data is transmitted through the downhole tool string by a system of data conductors and signal couplers in the downhole tool string.
13. The apparatus of claim 12 wherein the peripheral electronic device is adapted to transmit information on the downhole tool string.
14. The apparatus of claim 13 , wherein the peripheral electronic device transmits data to surface equipment through the downhole tool string.
15. The apparatus of claim 13 , wherein the peripheral electronic device transmits data at a carrier frequency distinct from a carrier frequency of separate data transmissions on the tool string.