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. 05, 2018
Filed:
Aug. 03, 2017
Applicant:
Evolution Engineering Inc., Calgary, CA;
Inventors:
Jili Liu, Calgary, CA;
Mingdong Xu, Calgary, CA;
Aaron W. Logan, Calgary, CA;
David A. Switzer, Calgary, CA;
Monica E. Varga, Calgary, CA;
Mojtaba Kazemi Miraki, Calgary, CA;
Assignee:
Evolution Engineering Inc., Calgary, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 47/12 (2012.01); H04W 52/02 (2009.01); H04B 17/336 (2015.01); H04B 17/318 (2015.01);
U.S. Cl.
CPC ...
E21B 47/122 (2013.01); E21B 47/121 (2013.01); H04B 17/336 (2015.01); H04W 52/028 (2013.01); H04B 17/318 (2015.01);
Abstract
An electromagnetic telemetry system adjusts telemetry parameters which may include carrier frequency, signal amplitude and/or data encoding protocol to achieve reliable data transmission and to conserve power. In some embodiments, sweep signals transmit a range of carrier frequencies and the parameters are determined in part by analyzing the received sweep signals. In some embodiments, different parameters are selected automatically based on a mode of drilling.