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. 09, 2020
Filed:
Nov. 19, 2015
Applicant:
Halliburton Energy Services, Inc., Houston, TX (US);
Inventors:
Yike Hu, Houston, TX (US);
Weijun Guo, Houston, TX (US);
Assignee:
Halliburton Energy Services, Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 47/00 (2012.01); G01V 5/12 (2006.01); G01V 5/10 (2006.01); E21B 33/14 (2006.01);
U.S. Cl.
CPC ...
E21B 47/0005 (2013.01); G01V 5/101 (2013.01); G01V 5/125 (2013.01); E21B 33/14 (2013.01);
Abstract
A method for material evaluation may include detecting photons from gamma ray interactions with material in an annular region between a geological formation and a casing. An energy spectrum is generated from the detected photons. A difference between materials may then be detected based on a comparison of the generated energy spectrum with a reference spectrum for a known material (e.g., good cement, known fluid).