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:
Jun. 05, 2007
Filed:
Jun. 22, 2005
Stephen Riley, Spring, TX (US);
Benoit J. Guivarch, Portsall, FR;
Darryl E. Trcka, Houston, TX (US);
David M. Chace, Houston, TX (US);
Stephen Riley, Spring, TX (US);
Benoit J. Guivarch, Portsall, FR;
Darryl E. Trcka, Houston, TX (US);
David M. Chace, Houston, TX (US);
Baker Hughes Incorporated, Houston, TX (US);
Abstract
A pulsed neutron source irradiates an earth formation. The irradiation produces Nfrom Oin a fluid in the borehole, and the gamma rays produced by the subsequent decay of Nare detected by a plurality of spaced apart detectors. The count rates of the detectors are accumulated over a time sampling interval to produce temporal signals. Processing of the temporal signals using correlation, differentiation and/or semblance techniques is used for determination of the flow velocity of one or more fluids in the borehole.