Permanently emplaced electromagnetic system and method for measuring formation resistivity adjacent to and between wells
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Mar 18, 2003
Grant Date -
Jan 3, 2002
app pub date -
Apr 18, 2001
filing date -
May 1, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
Systems and methods for determining characteristics of geologic formations between conductively lined wellbores. At least one transmitter is axially disposed at a selected depth in a first wellbore and is attached to an external surface of a conductive liner. At least one receiver is axially disposed at a selected depth in a second wellbore and is attached to an external surface of a conductive liner. Both the transmitter and the receiver are attached to a surface control station. The transmitter generates a first magnetic field, and a formation magnetic field induced by the first magnetic field is detected by the receiver. The detected formation magnetic field is used to determine characteristics of the geologic formations.
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