Title:
COMMUNICATIONS SYSTEM HAVING REDUNDANT CHANNELS
Document Type and Number:
WIPO Patent Application WO2000029717
Kind Code:
A3
Abstract:
A system for use in a well having completion zones includes a surface node (200) and a plurality of downhole nodes (202, 204) positioned in the completion zones. A communications link (21) extends into the well and is coupled to the surface node and downhole nodes. The communications link includes channels (212, 214, 216) coupling successive nodes, and the surface node and downhole nodes are coupled in a loop by the channels.
Inventors:
LABORDE GUY V
Application Number:
PCT/US1999/026954
Publication Date:
September 08, 2000
Filing Date:
November 16, 1999
Export Citation:
Assignee:
SCHLUMBERGER TECHNOLOGY CORP (US)
International Classes:
E21B47/12; G01V1/22; G01V1/40; H04L12/423; H04L12/437; (IPC1-7): E21B47/12; G01V1/40; G01V1/22; H04L12/437; H04L12/423
Domestic Patent References:
| WO1998007049A2 | 1998-02-19 |
Foreign References:
| EP0682431A1 | 1995-11-15 | |||
| US5515038A | 1996-05-07 | |||
| GB2028062A | 1980-02-27 |
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