Patent ID: 8519865
Filing Date: 2013-08-27
Classification: E21B,F16L,H01F

Abstract:
1. A downhole tool string component, comprising: a tubular body having a first end adapted for a threaded connection to an adjacent tool string component, a first flange disposed around the tubular body and extending away from the tubular body, and a second flange disposed around the tubular body and extending away from the tubular body, the first end having a first shoulder with a annular recess formed therein, the first shoulder adapted to abut an adjacent shoulder of the adjacent the adjacent tool string component with the downhole tool string component threadably connected to the adjacent tool string component; a sleeve disposed around the first flange, extending to the second flange, and disposed around the second flange, the tubular body, the sleeve, the first flange, and the second flange forming a pocket; a magnetic coupler disposed in the annular recess, the magnetic coupler comprising an annular trough of magnetic material and a conducting coil disposed therein, the conducting coil having a first lead extending from the annular recess and a second lead extending from the annular recess; an electrical circuit comprising an electronic device secured within the pocket, a first electrical conductor electrically isolated from the tubular body connecting the electronic device and the first lead, and a second electrical conductor electrically isolated from the tubular body connecting the electronic device and the second lead; and an adjacent tubular body having an adjacent shoulder having an adjacent annular trough, an adjacent magnetic coupler disposed in the adjacent annular recess, the adjacent magnetic coupler comprising an adjacent annular trough of magnetic material and an adjacent conducting coil disposed therein, the adjacent conducting coil having a third lead extending from the annular recess and a fourth lead extending from the annular recess; wherein the conducting coil has a first number of coil turns and the adjacent conducting coil has a second number of conducting coil turns, wherein the first number and the second number are not equal.