Invention Grant
- Patent Title: Active RFID tag arrangements for actuation of downhole equipment in well fluids
-
Application No.: US15747421Application Date: 2016-07-27
-
Publication No.: US10586083B2Publication Date: 2020-03-10
- Inventor: John Ownby , Matthew Knight , Richard Dalzell , Rupa Sharma , Eric R. Evans , Jobby T. Jacob
- Applicant: Weatherford Technology Holdings, LLC
- Applicant Address: US TX Houston
- Assignee: Weatherford Technology Holdings, LLC
- Current Assignee: Weatherford Technology Holdings, LLC
- Current Assignee Address: US TX Houston
- Agency: Blank Rome LLP
- International Application: PCT/US2016/044235 WO 20160727
- International Announcement: WO2017/027218 WO 20170216
- Main IPC: G06K7/10
- IPC: G06K7/10 ; E21B47/12 ; G06K19/07 ; G01V15/00 ; G06K19/077 ; E21B23/04

Abstract:
A first RFID tag arrangement for actuating a downhole tool includes a non-metallic housing enclosing a passive RFID tag, power source, pulsed oscillator circuit, and energizer coil. The pulsed oscillator circuit drives the energizer coil to stimulate and activate the tag such that it can be read by an external reader. A second RFID tag arrangement includes a non-metallic housing enclosing a power source, a transmission circuit, and a transmitter coil. The transmission circuit can drive the transmitter coil to transmit a payload stored in the transmission circuit such that the payload is delivered to an external reader. A method of actuating a downhole tool includes placing the tool's RFID tag reader in listen only mode, introducing into the wellbore an active RFID tag that transmits its payload to the reader, and optionally configuring the reader to reprogram the tag when it receives the payload therefrom.
Public/Granted literature
- US20180225485A1 Active RFID Tag Arrangements for Actuation of Downhole Equipment in Well Fluids Public/Granted day:2018-08-09
Information query