06670880 is referenced by 229 patents and cites 3 patents.

A system for transmitting data through a string of downhole components. In one aspect, the system includes first and second magnetically conductive, electrically insulating elements at both ends of the component. Each element includes a first U-shaped trough with a bottom, first and second sides and an opening between the two sides. Electrically conducting coils are located in each trough. An electrical conductor connects the coils in each component. In operation, a varying current applied to a first coil in one component generates a varying magnetic field in the first magnetically conductive, electrically insulating element, which varying magnetic field is conducted to and thereby produces a varying magnetic field in the second magnetically conductive, electrically insulating element of a connected component, which magnetic field thereby generates a varying electrical current in the second coil in the connected component.

Title
Downhole data transmission system
Application Number
9/816766
Publication Number
6670880 (B1)
Application Date
March 23, 2001
Publication Date
December 30, 2003
Inventor
Joe Fox
Spanish Fork
UT, US
Scott Dahlgren
Provo
UT, US
David Pixton
Lehi
UT, US
H Tracy Hall Jr
Provo
UT, US
David R Hall
Provo
UT, US
Agent
Brinks Hofer Gilson & Lione
US
Assignee
Novatek Engineering
UT, US
IPC
H01F 21/06
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