BOPI 07 BR/2024 REPERTOIRE NUMERIQUE 13 (11) 21574 Consulter le mémoire (51) E21B 33/06 (2018.01) (21) 1202300126 - PCT/IB2021/058736 (22) 24/09/2021 (30) IT n° 102020000022756 du 28/09/2020 (54) Valve and method for closing extraction wells under emergency conditions. (72) RICCI MACCARINI, Giorgio (IT); POLONI, Roberto (IT); TAGLIABOSCHI, Davide (IT) et BIONDI, Andrea (IT) (73) ENI S.P.A., Piazzale Enrico Mattei, 1, 00144 ROMA (IT) (74) Cabinet Spoor & Fisher Inc. Ngwafor & Partners, The House of Gideon, Golf/Bastos Quater, Opposite The American Embassy, Entrance-Saint John Paul II Boulevard, P.O. Box 8211, YAOUNDE (CM). (57) A safety valve for wells for the extraction of hydrocarbons is described which allows the cutting of the tubular drilling material possibly present in the safety valve and the closure of the well with a hydraulic seal, allowing the subsequent application of appropriate intervention plans to control the well in case the BOPs are not effective. A safety valve for wells for the extraction of hydrocarbons is described which is able to perform the action of cutting the tubular material with a higher capacity than conventional BOPs, considering the worst conditions of compound stresses at the wellhead, which are not contemplated by such BOPs today. In particular, the safety valve is capable of cutting/shearing a wide range of tubular elements in its inside. Fig. 2 ________________________________________ (11) 21575 Consulter le mémoire (51) B01D 25/127 (2018.01); B01D 25/164 (2018.01); B01D 25/30 (2018.01); B32B 3/30 (2018.01) ; F16B 5/07 (2018.01) (21) 1202300148 - PCT/FI2020/050650 (22) 02/10/2020 (54) A grid and a vat for a filtrate vat assembly of a vertical filter press. (72) JUVONEN, Ismo (FI); MUSTAKANGAS, Mirva (FI); KAIPAINEN, Janne (FI); ELORANTA, Teemu (FI); ILLI, Mika (FI) et VÄNTTINEN, Kari (FI) (73) Metso Outotec Finland Oy, Lokomonkatu 3, 33900 TAMPERE (FI) (74) Cabinet Spoor & Fisher Inc. Ngwafor & Partners, The House of Gideon, Golf/Bastos Quater, Opposite The American Embassy, Entrance-Saint John Paul II Boulevard, P.O. Box 8211, YAOUNDE (CM). (57) A grid (1) and a vat (4) for a vat assembly of a vertical filter press such as a tower press is disclosed. The grid (1) is provided with a topographical pattern (3) engaging with a
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