06177882 is referenced by 75 patents and cites 63 patents.

A downhole communications system including an electromagnetic-to-acoustic signal repeater (

35

) for communicating information between surface equipment and downhole equipment and a method for use of the repeater (

35

) is disclosed. The repeater (

35

) comprises an electromagnetic receiver (

37

) and an acoustic transmitter (

41

). The receiver (

37

) receives an electromagnetic input signal and transforms the electromagnetic input signal to an electrical signal that is inputted into an electronics package (

39

) that amplifies the electrical signal and forwards the electrical signal to the transmitter (

41

) that transforms the electrical signal to an acoustic output signal that is acoustically transmitted.

Title
Electromagnetic-to-acoustic and acoustic-to-electromagnetic repeaters and methods for use of same
Application Number
8/980597
Publication Number
6177882 (B1)
Application Date
December 1, 1997
Publication Date
January 23, 2001
Inventor
Harrison C Smith
Anna
TX, US
Paul Ringgenberg
Carrollton
TX, US
Agent
Lawrence R Youst
US
Paul I Herman
US
Assignee
Halliburton Energy Services
TX, US
IPC
G01V 3/00
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