Patent ID: 6641434
Filing Date: 2003-11-04
Classification: E21B,F16L,Y10S

Abstract:
A wired pipe joint having an axial bore, comprising:an elongate tubular shank; a box-end, at a first end of said shank, said box-end defining a contacting annular outer pipe end, a contacting annular inner shoulder, and an internal thread between said outer pipe end and said inner shoulder, said inner shoulder having a first annular slot therein, said first slot containing a first annular concave high-conductivity, low-permeability layer defining a first annular cavity, and a first coil fixedly mounted within said first annular cavity; a pin-end, at a second end of said shank, said pin-end defining a contacting annular outer shoulder, a contacting annular inner pipe end, and an external thread between said outer shoulder and said inner pipe end, said inner pipe end having a second annular slot therein, said second slot containing a second annular concave high-conductivity, low-permeability layer defining a second annular cavity, and a second coil fixedly mounted within said second annular cavity; and means for electrically coupling coil windings of said first and second coils.