BOPI 06 BR/2023 REPERTOIRE NUMERIQUE 28 (11) 21008 (51) E21B 23/04 (2018.01) (21) 1202200388 - PCT/EP2020/059639 (22) 03/04/2020 (54) Hydraulically locked tool. (72) SOLEM, Jonas (DK) (73) ODFJELL PARTNERS INVEST LTD, c/o ODFJell Drilling AS, Kokstadflaten 35, 5257 KOKSTAD (NO) (74) Cabinet BONNY & ASSOCIÉS, LAW FIRM, B.P. 35349, YAOUNDE (CM). (57) Disclosed is a downhole tool and method of use. The tool has a sleeve assembly slideable within the tool body under the action of a hydraulic pressure differential. The sleeve assembly has a control collar portion and a first hydraulic reservoir is defined between a first end of the control collar portion and the body, and a second hydraulic reservoir is defined between a second end of the control collar portion and the body. A bleed conduit extending between the first and second hydraulic reservoirs and an electromechanical control valve across the bleed conduit is used to regulate fluid flow along the bleed conduit. The electromechanical control valve may communicate with sensors, by which control systems are transmitted to the control valve. Consulter le mémoire ________________________________________ (11) 21009 (51) A01H 1/02 (2018.01) (21) 1202200398 - PCT/CN2021/078675 (22) 02/03/2021 (30) CN n° 202010293260.8 du 15/04/2020 (54) Apparatus and method for keeping high vitality of in-vitro pollen of gramineous crops. (72) WANG, Hui (CN); YANG, Wei (CN); ZHANG, Conghe (CN); WU, Yuejin (CN); JIANG, Jiayue (CN);
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