06018501 is referenced by 53 patents and cites 76 patents.

A subsea repeater apparatus (48) for communicating information between surface equipment (60) and downhole equipment (44) is disclosed. The apparatus (48) comprises an electromagnetic receiver (66, 68) that receives an electromagnetic signal (46) carrying information from downhole equipment (44) and an acoustic modem (54) that acoustically retransmits (56) the information to surface equipment (60) through the sea. The apparatus (48) may also comprise an acoustic modem (54) that receives an acoustic signal (64) carrying information from surface equipment (60) through the sea and an electromagnetic transmitter (50) that radiates electromagnetic waves (66) carrying the information into the earth.

Title
Subsea repeater and method for use of the same
Application Number
8/987991
Publication Number
6018501
Application Date
December 10, 1997
Publication Date
January 25, 2000
Inventor
Paul D Ringgenberg
Carrollton
TX, US
Harrison C Smith
Anna
TX, US
Agent
Lawrence R Youst
Paul I Herman
Assignee
Halliburton Energy Services
TX, US
IPC
H04B 11/00
H04V 9/00
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