Communications: electrical – Wellbore telemetering or control – Using a specific transmission medium
Patent
1998-01-20
2000-09-05
Horabik, Michael
Communications: electrical
Wellbore telemetering or control
Using a specific transmission medium
324366, 324368, 367 31, G01V 300
Patent
active
061149721
ABSTRACT:
An apparatus for obtaining resistivity readings of the earth surrounding a wellbore (32) to determine the downhole location of the apparatus or to generate a log is disclosed. The apparatus comprises an electromagnetic transmitter (40) for transmitting electromagnetic waves (42, 46) into the earth and an electronics package (122). The electronics package includes a power source (200) providing a current to the electromagnetic transmitter (40), a current sensing device (204) for detecting the current drawn by the electromagnetic transmitter (40), a sample and hold circuit (210) for sampling the current drawn by the electromagnetic transmitter (40) and a memory device (214) for storing the current draw information.
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Halliburton Energy Service,s Inc.
Herman Paul I.
Horabik Michael
Wong Albert K.
Youst Lawrence R.
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