BOPI 04 BR/2023 REPERTOIRE NUMERIQUE 16 MAURO, Stefano (IT) et GALLUZZI, Renato (IT) (73) ENI S.P.A., Piazzale Enrico Mattei, 1, 00144 ROMA (IT) (74) SPOOR & FISHER Inc. NGWAFOR & PARTNERS Sarl, The House of Gideon, Golf/Bastos Quarters, Opposite The American Embassy, Entrance-Saint John Paul II Boulevard, P.O. Box 8211, YAOUNDE (CM). (57) Detection system (100) comprising: a drill bit (200) in which one or more electro-acoustic transducers (10, 11, 12) configured to operate as a transmitter and/or receiver, are integrated; analogue driving electronic circuits (110) and analogue receiving electronic circuits (111); a processing and control unit (120) associated with the analogue driving (110) and receiving (111) electronic circuits, the processing and control unit (120) being associated with a data storage unit (121) and is powered electrically by an electrical supply system (122), the processing and control unit (120) being configured for generating driving signals to be sent to the electro-acoustic transducer acting as a transmitter (10) by means of the analogue driving electronic circuits (110), for acquiring the signals received from the electroacoustic transducer acting as a receiver (20) by means of the analogue receiving electronic circuits (111) and for processing the received signals in such a way as to determine the presence of discontinuity interfaces and/or anomalies in pore pressures in geological formations; characterised in that each of said electro-acoustic transducers (10, 11, 12) is adapted to be in contact with a pressurised fluid and is of the type comprising: - a tubular body (20), which extends in length along a longitudinal direction X, said tubular body (20) comprising a first end portion (21) and a second end portion (22), opposed to each other longitudinally, the tubular body (20) having internally a first chamber (23), which ends with the first end portion (21) and a second chamber (24) on one side adjacent and in fluid communication with the first chamber (23) and, on the other side ending with the second end portion (22), the first end portion (21) being closed towards the outside by means of a membrane (26) applied to the tubular body (20), the second end portion (22) having one or more openings (27) that put it into fluid communication towards the outside, the first chamber (23) containing in its walls a plurality of electrical windings (25) arranged in succession between them in the longitudinal direction X, the second chamber (24) being filled with a liquid; a movable element (30) housed in the first chamber (23), the movable element (30) comprising a plurality of permanent magnets (31) packed and arranged one above the other with alternate magnetisation in the longitudinal direction X, and separated one from the other by discs of ferromagnetic material, the movable element (31) being supported at the longitudinal ends by springs (40), the movable element (30) also being connected to said membrane (26); a movable piston (45) positioned and slidable in the second end portion (22). Fig. 1 Consulter le mémoire ________________________________________ (11) 20889 (51) A61F 13/20 (2018.01) (21) 1202100501 - PCT/SE2020/050491 (22) 13/05/2020 (30) SE n° 1950566-8 du 13/05/2019 (54) Nasal plug. (72) AHNBLAD, Susanne (SE) et AHNBLAD, Peter (SE) (73) Hogne AB, Hästholmsvägen 28, 131 30 NACKA (SE) (74) SPOOR & FISHER Inc. NGWAFOR & PARTNERS Sarl, The House of Gideon, Golf/Bastos Quarters, Opposite The American Embassy, Entrance-Saint John Paul II Boulevard, P.O. Box 8211, YAOUNDE (CM).
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