Wireless tag tracer method and apparatus

摘要

Wireless tag fluid tracking system. A fluid can be tracked in a wellbore utilizing at least one WID tag, such as an LW tag or an RFID tag, entrained in the fluid. A WID tag reader can be disposed and/or displaced in the wellbore, for example, on a drill string or a casing string. A reader can be utilized to locate the at least one WID tag in the wellbore. A reader can be housed in a drill string sub. A fluid entrained with at least one WID tag can be utilized as a tracer fluid. A WID tag can be entrained in cement or a drilling or fracture fluid.

主权项

1. A system to track a fluid in a wellbore comprising:
a visibility network of wireless identification (WID) tags comprising peer-to-peer long wavelength (LW) tags operable at a frequency less than 450 KHz and a data rate of 300 to 9600 baud entrained in a fluid to form a slurry; at least one reader disposed within the wellbore within range of the visibility network; and one or more of the peer-to-peer LW tags in the visibility network disposed in a zone beyond range of the at least one reader, wherein the beyond-range peer-to-peer LW tags are locatable by the at least one reader via the visibility network.