Owner Halliburton Energy Services, Inc.

Inventors Trainor, William; Wei, Michael

Agent Pizzeys

Pub. Number AU-B-2001268663

PCT Pub. Number WO01/98618

Priority 09/599,343 22.06.00 US

Filing date 22 June 2001

Wipo publication date 2 January 2002

Acceptance publication date 13 May 2004

G08C 015/08 Arrangements characterised by the use of multiplexing for the transmission of a plurality of signals over a common path

H04J 003/06 Time-division multiplex systems - Synchronising arrangements

H04L 012/26 Data switching networks - Monitoring arrangements

H04L 001/00 Arrangements for detecting or preventing errors in the information received

H04L 027/36 Modulated-carrier systems

H04L 023/02 Apparatus or local circuits for systems other than those covered by groups

H04L 005/12 Arrangements affording multiple use of the transmission path

G01V 003/00 Electric or magnetic prospecting or detecting

G08C 015/00 Arrangements characterised by the use of multiplexing for the transmission of a plurality of signals over a common path

G08C 015/12 Arrangements characterised by the use of multiplexing for the transmission of a plurality of signals over a common path

E21B 034/06 Valve arrangements for boreholes or wells

E21B 047/00 Survey of boreholes or wells

G01R 031/08 Arrangements for testing electric properties - Locating faults in cables, transmission lines, or networks

H04J 003/14 Time-division multiplex systems - Monitoring arrangements

H04J 001/16 Frequency-division multiplex systems