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:
Aug. 29, 1989
Filed:
Mar. 07, 1988
Applicant:
Inventor:
Dan M Arnold, Houston, TX (US);
Assignee:
Halliburton Logging Services, Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
250260 ; 73155 ; 250259 ; 250266 ;
Abstract
A tracer injection method is set forth and is practiced by using spaced end located injectors on a sonde having spaced detectors along the length of the sonde. The injectors inject radioactive isotopes which are distinguishable from one another at the detectors. The method contemplates simultaneous injection of different isotopes, making measurements to determine fluid flow velocity in the casing, and selecting peaks to obtain measurements of the fluid flow velocity in leaks through the casing into external channels along the casing.