US 12,435,627 B2
Wireless telemetry using a pressure switch and mechanical thresholding of the signal
Gregory Thomas Werkheiser, Carrollton, TX (US); Michael Linley Fripp, Singapore (SG); and Matthew Arran Willoughby, Carrollton, TX (US)
Assigned to Halliburton Energy Services, Inc., Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on May 31, 2024, as Appl. No. 18/679,975.
Application 18/679,975 is a division of application No. 17/134,863, filed on Dec. 28, 2020, granted, now 12,000,274.
Prior Publication US 2024/0318549 A1, Sep. 26, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. E21B 47/18 (2012.01); E21B 47/12 (2012.01)
CPC E21B 47/18 (2013.01) [E21B 47/138 (2020.05)] 10 Claims
OG exemplary drawing
 
1. A system comprising:
a tubular located in a wellbore;
a pressure controller located at or near a surface of the wellbore to send a digital command via a change in a pressure applied to the tubular; and
a receiver disposed in the wellbore, wherein the receiver includes a mechanical pressure switch configured to detect a change in the pressure applied to the tubular that exceeds a change threshold within a time limit and to create an electrical connection in response to the change in the pressure that exceeds the change threshold within the time limit,
wherein the mechanical pressure switch comprises a diaphragm, wherein the diaphragm is deflectable by the pressure applied to the tubular,
wherein power is not supplied to the receiver disposed in the wellbore until there is a detected change in pressure by the mechanical pressure switch, and
wherein the mechanical pressure switch further comprises an enclosure connected to the diaphragm and a fluid meter having an outlet, wherein the outlet is connected to the enclosure to act against deflection of the diaphragm.