Patent ID: 6633236
Filing Date: 2003-10-14
Classification: E21B,H04B

Abstract:
A communications system comprising:a piping structure comprising a first location, a second location, and an electrically conductive portion extending between said first and second locations, wherein said first and second locations are distally spaced along said piping structure; a first communication device electrically connected to said electrically conductive portion of said piping structure along said first location, said first communication device being adapted to send and receive communication signals via time-varying current; a second communication device electrically connected to said electrically conductive portion of said piping structure along said second location, said second communication device being adapted to send and receive communication signals via time-varying current; and an induction choke located about a portion of said piping structure, said induction choke being adapted to route time-varying current within said piping structure, and such that said first communication device can communicate with said second communication device via said piping structure.