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:
Jan. 03, 2017

Filed:

Mar. 13, 2014
Applicant:

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

Inventors:

John Leslie Wisinger, Jr., Spring, TX (US);

Ranganathan Sridharan, Kingwood, TX (US);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 47/00 (2012.01); E21B 41/00 (2006.01); G04C 11/00 (2006.01); G04G 7/00 (2006.01);
U.S. Cl.
CPC ...
E21B 47/00 (2013.01); E21B 41/00 (2013.01); G04C 11/00 (2013.01); G04G 7/00 (2013.01);
Abstract

Time is tracked in a downhole tool to indicate whether timestamps associated with data samples or events in a log indicate either real time or a duration of time since a certain reset, and to indicate whether the timestamps have been synchronized with a master clock in the tool. The log also records the time and offset of each synchronization event. A computer processes the log to convert all of the timestamps to real-time values and to indicate timestamps that have been estimated and timestamps that were never synchronized to a master clock in the tool. The computer determines an associated uncertainty for each of the estimated timestamps.


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