Bulletin Officiel de la Propriété Industrielle (BOPI) des Brevets d'Invention

BOPI 06 BR/2023 REPERTOIRE NUMERIQUE 11 (11) 20981 (51) C04B 28/02 (2018.01); C09K 8/42 (2018.01); C09K 8/46 (2018.01) ; C09K 8/473 (2018.01) (21) 1201800306 - PCT/US2014/032150 (22) 28/03/2014 (30) US n° 13/854,115 du 31/03/2013 (54) Cement set activators for set-delayed cement compositions and associated methods. (72) PISKLAK, Thomas, J. (US); OTIENO, Pauline, A. (US); BOUL, Peter, J. (US); AGAPIOU, Kyriacos (US); BROTHERS, Lance, E. (US) et MORGAN, Ronnie, G. (US) (73) HALLIBURTON ENERGY SERVICES, INC., 10200 Bellaire Boulevard, HOUSTON, Texas 77072 (US) (74) S.C.P AKKUM, AKKUM & Associates, No. 1777, rue 6.261, Yaoundé, Auditorium Jean Paul II, Quartier Mbankolo, B.P. 4966, YAOUNDE (CM). (57) Disclosed herein are cement compositions and methods of using set-delayed cement compositions in subterranean formations. A method of cementing in a subterranean formation, may comprise providing a set-delayed cement composition comprising water, pumice, hydrated lime, and a set retarder, activating the set-delayed cement composition with a cement set activator, wherein the cement set activator comprises at least one activator selected from the group consisting of nanosilica, a polyphosphate, and combinations thereof, introducing the set-delayed cement composition into a subterranean formation, and allowing the set-delayed cement composition to set in the subterranean formation. Consulter le mémoire ________________________________________ (11) 20982 (51) G01N 29/04 (2018.01) ; G01N 29/44 (2018.01) (21) 1201900459 - PCT/EP2018/060098 (22) 19/04/2018 (30) EP n° PCT/EP2017/062131 du 19/05/2017 (54) Ultrasonic detection system and method (72) HÄLLEVALL, Niclas (SE) et JONSSON, Cecilia (SE) (73) Metso Sweden AB, Box 132, 231 22 TRELLEBORG (SE) (74) Cabinet Spoor & Fisher Inc. Ngwafor & Partners, The House of Gideon, Golf/Bastos Quarter, Opposite The American Embassy, Entrance-Saint John Paul, II Boulevard, P.O. Box 8211, YAOUNDE (CM). (57) The invention relates to an ultrasonic detection system (140) in an arrangement (100) for handling screening material (102), e.g. aggregate, ore or similar. The ultrasonic detection system (140) comprises an ultrasonic transmitter (151a) arranged at a surface (142a) of the arrangement (100), and adapted to send out an ultrasonic signal (154a) towards the surface (142a), an ultrasonic receiver (152a) arranged at the surface (142a), and adapted to receive the ultrasonic signal (154a), and a control unit (160) connected to the at least one ultrasonic transmitter (151a) and the at least one ultrasonic receiver (152a). The invention also relates to a method for monitoring operation of an arrangement (100) for handling screening material (102). Fig. 1 Consulter le mémoire