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.

Date of Patent:
Mar. 10, 2020

Filed:

Sep. 17, 2018
Applicant:

Baker Hughes, a GE Company, Llc, Houston, TX (US);

Inventors:

Feyzi Inanc, Spring, TX (US);

Toyli Anniyev, The Woodlands, TX (US);

Maxim Vasilyev, The Woodlands, TX (US);

David Chace, Houston, TX (US);

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01V 5/12 (2006.01); G01V 5/14 (2006.01); G01V 5/10 (2006.01); G01V 5/04 (2006.01);
U.S. Cl.
CPC ...
G01V 5/125 (2013.01); G01V 5/04 (2013.01); G01V 5/102 (2013.01); G01V 5/145 (2013.01);
Abstract

Methods and apparatus for estimating parameters of interest of a volume in an earth formation from a response spectrum representing radiation information obtained by a radiation detector in a borehole intersecting the volume responsive to nuclear phenomena in the volume, the response spectrum including spectral distortion resulting i) environmental conditions in the formation, or ii) deterioration of at least one component of the radiation detector. Methods include recovering an enhanced response spectrum estimating the true spectrum, comprising mitigating the spectral distortion by applying at least one contrast sharpening mask to the response spectrum. The at least one contrast sharpening mask may comprise at least a low pass smoothing mask subtracted from a unity mask which when applied to the response spectrum obtains high-frequency data and adds the high-frequency data to the response spectrum. The response spectrum may be a gamma ray spectrum.


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