Patent ID: 9670772
Date: 2017-06-06
CPC Classifications: E21B

Claim:
1. A line for oil and gas exploration comprising: a well string element including, an elongated body that defines a through channel and also includes a side pocket that is open to ambient, and an acoustic modem provided in the pocket and configured to emit acoustic waves; a valve provided in the well string element and the valve is upstream of the well string element; and a receiving device configured to communicate through the acoustic waves with the acoustic modem, the receiving device being configured to be lowered, with a cable, into a medium contained within the line, and to be positioned upstream the valve, wherein the acoustic modem is configured to receive electrical signals from one or more sensors, transform the electrical signals into the acoustic waves indicative of various parameters measured by the one or more sensors connected to the acoustic modem, and emit the acoustic waves into a wall of the elongated body when receiving an acoustic wake-up call from a device outside the well string element, and wherein the receiving device is not in direct contact with the line, and wherein the receiving device hangs freely from the cable while receiving the acoustic waves emitted by the acoustic modem through the medium, wherein the acoustic modem comprises a ceramic element configured to oscillate to produce the acoustic waves, and the ceramic element is directly attached to the elongated body.