| 主权项 |
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 or upstream of it; and a receiving device configured to communicate through acoustic waves with the acoustic modem, the receiving device being configured to be lowered, with a cable, into a medium contained within the drill 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 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 drill string element, and wherein the receiving device receives the acoustic waves emitted by the acoustic modem through the medium. |
