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:
Nov. 20, 2007
Filed:
Jun. 27, 2005
Gabor G. Hursan, The Woodlands, TX (US);
Songhua Chen, Katy, TX (US);
Gabor G. Hursan, The Woodlands, TX (US);
Songhua Chen, Katy, TX (US);
Baker Hughes Incorporated, Houston, TX (US);
Abstract
A method and apparatus for obtaining a parameter of interest relating to a region proximate a nuclear magnetic resonance (NMR) logging tool suitable for subterranean well logging is disclosed. The nuclei of the region are subjected to a pulsed NMR technique and are productive of NMR logging data, the nuclei of the region characteristically having a longitudinal relaxation time Tdistribution and an apparent transverse relaxation time Tdistribution. In response to the NMR logging data, an R distribution is defined as R=T/T, the Tand R distributions are processed as separate bins, along with the NMR logging data, according to a two-dimensional inversion model, and a signal intensity map of R versus Tis provided that is representative of the parameter of interest relating to the region. In response to a high-intensity signal on the map being within a first range of Tvalues and a first range of R values, the presence of a light hydrocarbon within the region is identified.