US 12,071,847 B2
Electromagnetic telemetry device
John J. Cooley, Boston, MA (US); Riccardo Signorelli, The Woodlands, TX (US); Morris Green, Cambridge, MA (US); Joseph K. Lane, Cambridge, MA (US); and Dan Stiurca, Boston, MA (US)
Assigned to FASTCAP SYSTEMS CORPORATION, Boston, MA (US)
Filed by FastCAP Systems Corporation, Boston, MA (US)
Filed on Apr. 22, 2022, as Appl. No. 17/727,075.
Application 17/727,075 is a continuation of application No. 16/793,744, filed on Feb. 18, 2020, granted, now 11,313,221.
Application 16/793,744 is a continuation of application No. 15/186,531, filed on Jun. 19, 2016, granted, now 10,563,501, issued on Feb. 18, 2020.
Application 15/186,531 is a continuation of application No. PCT/US2014/071790, filed on Dec. 22, 2014.
Claims priority of provisional application 62/066,337, filed on Oct. 20, 2014.
Claims priority of provisional application 62/056,166, filed on Sep. 26, 2014.
Claims priority of provisional application 61/919,585, filed on Dec. 20, 2013.
Prior Publication US 2022/0243586 A1, Aug. 4, 2022
Int. Cl. E21B 47/13 (2012.01); E21B 41/00 (2006.01); G01V 11/00 (2006.01); H02J 7/00 (2006.01); H02J 7/34 (2006.01)
CPC E21B 47/13 (2020.05) [E21B 41/0085 (2013.01); G01V 11/002 (2013.01); H02J 7/00 (2013.01); H02J 7/345 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An electromagnetic (EM) telemetry device comprising an EM telemetry circuit capable of transmitting a pulsed high power EM telemetry signal, wherein:
the high power EM telemetry signal has a peak or average pulse power of about 20 W to about 2000 W, and
the EM telemetry circuit has a maximum operating temperature of at least 150 degrees Celsius; wherein the high power EM telemetry signal originates from a low power EM signal generator.