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. 24, 2004
Filed:
Mar. 05, 2002
Christian Stoller, Kingwood, TX (US);
Xavier Herve, Milan, IT;
Sunil N. Gulrajani, Aberdeenshire, GB;
Peter Wraight, Skillman, NJ (US);
Verna L. Lomax, New York, NY (US);
Dennis J. Pittman, Lawrenceville, NJ (US);
Jean-Pierre Poyet, Larchmont, NY (US);
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
A system and method are disclosed for detecting radiation phenomena in an area surrounding a wellbore traversing an earth formation. A logging instrument is equipped with combined radiation detectors to provide multiple measurements at the same axial position along the instrument axis, without the use of rotating parts within the instrument. Shielded or segmented detectors provide azimuthally focused detector sensitivity. A controllable radiation source is optionally disposed on the instrument for subsurface irradiation. Also disclosed is the use of radioactive materials in unison with the logging instrument to determine subsurface flow and reservoir characteristics.