作者: Haavard Aakre , Bja Rnar Werswick , Vidar Mathiesen
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摘要: A device for fixing a valve (1) to tubular member (2) being situated in wellbore formed subterranean reservoir and is having at least one drainage section (11) including plurality of such valves as allow the flow fluid into out from member, respectively. According present invention secured by means sleeve portion (3), part or like separate (4) which be arranged.