Inventors:
Harold J. Vinegar - Houston TX
Robert Rex Burnett - Katy TX
William Mountjoy Savage - Houston TX
John Michele Hirsch - Houston TX
Peter Anthony Crossley - Austin TX
Assignee:
Shell Oil Company - Houston TX
International Classification:
G01V 318
Abstract:
A petroleum well ( ) for producing petroleum products that incorporates a system adapted to controllably measure a formation resistivity using induction chokes ( - ) to form electrically isolated piping structure sections that can be used as the formation contact electrodes for time-varying current, and methods of producing petroleum products while measuring formation resistivity, are provided by the present invention. The system comprises a first induction choke ( ), a second induction choke ( ), and a device ( ). The first induction choke ( ) is located about a piping structure ( ) of the well ( ). The second induction choke ( ) is also located about the piping structure ( ) of the well ( ), but the first induction choke ( ) is distally spaced from the second induction choke ( ). The device ( ) is located outside of the piping structure ( ) and comprises two terminals ( ). A first of the terminals ( ) extending from the device ( ) is electrically connected to the piping structure ( ) on one side ( ) of the first induction choke ( ).
