发明名称 SBOP SWARF WIPER
摘要 A wiper (200a) for a blowout preventer having an adapter ring (102a) and a piston (104a) slideable relative to the adapter ring along an interface can include a base (202) adapted to couple the wiper to the adapter ring and a head (204) coupled to the base. The head can include a first portion adapted to bridge the interface and contact the piston and a second portion adapted to contact the adapter ring and support the first portion. The second portion of the head can be adapted to at least partially resist rotation of the wiper. A blowout preventer can include one or more wipers as shown and described.
申请公布号 WO2016133496(A1) 申请公布日期 2016.08.25
申请号 WO2015US16177 申请日期 2015.02.17
申请人 NATIONAL OILWELL VARCO, L.P. 发明人 GARCIA, Sergio;JOHNSON, Chris;MIRELES, Lydia;AL-QURAISHI, Ali A.;FOLLETT, Nathan
分类号 E21B33/06;E21B33/08 主分类号 E21B33/06
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