发明名称 ANNULAR BOP PACKING UNIT
摘要 A seal and a method of manufacturing a seal for a blowout preventer. The seal includes a rigid material insert disposed within an elastomeric body, with at least a portion of the rigid material insert selectively de-bonded from the elastomeric body.
申请公布号 EP2049763(A4) 申请公布日期 2014.10.01
申请号 EP20070799925 申请日期 2007.07.30
申请人 HYDRIL USA MANUFACTURING LLC 发明人 HUFF, PHILIP, A.;KHANDOKER, SHAFIG;BUTUC, STEFAN
分类号 E21B33/03;E21B33/06 主分类号 E21B33/03
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