Downhole inductively coupled digital electronic system
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United States of America Patent
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-
Oct 1, 2002
Grant Date -
N/A
app pub date -
Oct 12, 1999
filing date -
Oct 12, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A communication system between remote locations connected by a common wire conductor where AC power (40) is supplied from one location to one or more remote locations (32 and 34). At the remote locations, inductor coil components (28,32) and (30,34) provide power to an instrument (24,26). The AC power is modulated with surface selected discrete frequencies (56) to operate a specific selected remote location. At the selected remote location (24), the AC power is rectified and a logic processor detects the discrete frequencies for that location and operates the instrument. Data from the instrument is translated by current modulation (60) which is demodulated at the one location (50,64,66,68,70).
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