Wells – Processes – With indicating – testing – measuring or locating
Reexamination Certificate
2005-01-11
2005-01-11
Dang, Hoang (Department: 3672)
Wells
Processes
With indicating, testing, measuring or locating
C166S066000, C166S252600
Reexamination Certificate
active
06840316
ABSTRACT:
A petroleum well having a well casing, a production tubing, a source of time-varying current, a downhole tracer injection device, and a downhole induction choke. The casing extends within a wellbore of the well. The tubing extends within the casing. The current source is located at the surface. The current source is electrically connected to, and adapted to output a time-varying current into, the tubing and/or the casing, which act as electrical conductors for providing downhole power and/or communications to the injection device. The injection device having a communications and control module, a tracer material reservoir, and an electrically controllable tracer injector.
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Burnett Robert Rex
Carl, Jr. Frederick Gordon
Hirsch John Michele
Savage William Mountjoy
Stegemeier George Leo
Dang Hoang
Shell Oil Company
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