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. 13, 2018
Filed:
Mar. 04, 2016
Radu Coman, Hannover, DE;
Holger Tietjen, Hannover, DE;
Martin Blanz, Celle, DE;
Holger F. Thern, Hannover, DE;
Radu Coman, Hannover, DE;
Holger Tietjen, Hannover, DE;
Martin Blanz, Celle, DE;
Holger F. Thern, Hannover, DE;
BAKER HUGHES, A GE COMPANY, LLC, Houston, TX (US);
Abstract
A nuclear magnetic resonance (NMR) apparatus includes a transmitting assembly configured to emit one or more dual-wait-time pulse sequences, and a receiving assembly configured to detect a long-wait-time echo train and a short-wait-time echo train. The apparatus also includes a processor configured to perform at least one of: estimating a difference between the long-wait-time echo train and the short-wait-time echo train to generate a differential echo-train, inverting the differential echo-train into a differential Tdistribution, and detecting a motion artefact in response to determining that the differential echo-train includes a short-Tporosity fraction that is greater than a threshold value; and inverting two echo trains into two Tdistributions, calculating at least two porosity fractions for each of the two Tdistributions, estimating a shift of a porosity amount between the at least two porosity fractions, and detecting the motion artefact based on the shift.