EP 1484471 A2 20041208 - Improved transmission element for downhole drilling components
Title (en)
Improved transmission element for downhole drilling components
Title (de)
Verbessertes Übertragungselement für Bestandteile eines Bohrlochbohrsystems
Title (fr)
Elément de transmission amélioré pour éléments de forage dans le puits
Publication
Application
Priority
- US 45307603 A 20030603
- US 61225503 A 20030702
Abstract (en)
An apparatus for transmitting data between downhole tools is disclosed in one embodiment of the present invention as including an annular core (70) constructed of a magnetically-conductive material. At least one conductor (72), electrically isolated from the annular core, is coiled around the annular core. An annular housing (28) constructed of an electrically conductive material is used to partially enclose the annular core and the conductive coil. The annular housing is shaped to reside within an annular recess (76) formed into a surface of a downhole tool, and is electrically insulated from the surface. A biasing member (96) is used to effect a bias between the annular housing and the annular recess, urging the annular housing in a direction substantially perpendicular to the surface. <IMAGE>
IPC 1-7
IPC 8 full level
E21B 17/02 (2006.01); E21B 47/12 (2012.01)
CPC (source: EP US)
E21B 17/0285 (2020.05 - EP US); E21B 47/13 (2020.05 - EP)
Designated contracting state (EPC)
BE DE FR GB IT NL
DOCDB simple family (publication)
EP 1484471 A2 20041208; EP 1484471 A3 20041215; CA 2469574 A1 20041203; CA 2469574 C 20080527
DOCDB simple family (application)
EP 04253273 A 20040602; CA 2469574 A 20040602