The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 11, 2005
Filed:
Mar. 02, 2001
George Leo Stegemeier, Houston, TX (US);
Harold J. Vinegar, Houston, TX (US);
Robert Rex Burnett, Katy, TX (US);
William Mountjoy Savage, Houston, TX (US);
Frederick Gordon Carl, Jr., Houston, TX (US);
John Michele Hirsch, Houston, TX (US);
George Leo Stegemeier, Houston, TX (US);
Harold J. Vinegar, Houston, TX (US);
Robert Rex Burnett, Katy, TX (US);
William Mountjoy Savage, Houston, TX (US);
Frederick Gordon Carl, Jr., Houston, TX (US);
John Michele Hirsch, Houston, TX (US);
Shell Oil Company, Houston, TX (US);
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.