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Patent Searching and Data


Title:
BATTERY CONSERVATION FOR DOWNHOLE TELEMETRY
Document Type and Number:
WIPO Patent Application WO2004032344
Kind Code:
A3
Abstract:
Methods and apparatus for conserving battery energy used in transmitting signals carrying data from a downhole location, using a transmission system where a predetermined set of data is to be transmitted once during a predetermined period. The method can comprise the steps of: transmitting at least one signal (D) during said period to transmit the set of data; selecting the time of transmission of said at least one signal; and representing at least some of the data to be transmitted in terms of the time of transmission of said at least one signal.

Inventors:
HUDSON STEVEN MARTIN (GB)
Application Number:
PCT/GB2003/004301
Publication Date:
June 17, 2004
Filing Date:
October 03, 2003
Export Citation:
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Assignee:
EXPRO NORTH SEA LTD (GB)
HUDSON STEVEN MARTIN (GB)
International Classes:
E21B47/12; G01V11/00; H04B14/02; (IPC1-7): G01V11/00; E21B47/12; H04B14/02; G08C19/24
Domestic Patent References:
WO1993006578A11993-04-01
Foreign References:
US4513403A1985-04-23
GB2281424A1995-03-01
US5148408A1992-09-15
US4293936A1981-10-06
US3659085A1972-04-25
GB2094527A1982-09-15
Other References:
See also references of EP 1546765A2
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