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:
Oct. 29, 2019

Filed:

May. 12, 2017
Applicant:

Halliburton Energy Services, Inc., Houston, TX (US);

Inventor:

Kristoffer Thomas Walker, Kingwood, TX (US);

Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01V 1/48 (2006.01); E21B 47/12 (2012.01); E21B 49/00 (2006.01); G01V 1/36 (2006.01);
U.S. Cl.
CPC ...
G01V 1/48 (2013.01); E21B 47/12 (2013.01); E21B 49/00 (2013.01); G01V 1/364 (2013.01); G01V 2200/16 (2013.01); G01V 2210/121 (2013.01); G01V 2210/1299 (2013.01); G01V 2210/1429 (2013.01); G01V 2210/23 (2013.01); G01V 2210/324 (2013.01); G01V 2210/6222 (2013.01); G01V 2210/72 (2013.01);
Abstract

Systems and methods for downhole signal filtering. A method for downhole signal filtering may comprise defining outliers as isolated values; providing thresholds; determining the outliers from a buffer; computing a difference in slowness between adjacent pairs of values; comparing the adjacent pairs of values to other values in a same window; determining if the adjacent pairs of values vary more than the threshold; assigning a 2D flag array a value of 0 if the adjacent pairs of values vary more than the threshold; and computing a 75% percentile distribution for each adjacent pair of values to determine if each adjacent pair of values are the outliers.


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