发明名称 BLOWOUT PREVENTER RAM ASSEMBLY AND METHOD OF USING SAME
摘要 The techniques herein relate to a ram assembly for a blowout preventer for receiving a tubular of a wellbore. The ram assembly includes a ram block for engagement with the tubular, a ram shaft for selectively extending and retracting the ram block, and a ram connector for operatively connecting the ram shaft to the ram block. The ram block has at least one block groove. The ram shaft has a ram head with at least one shaft groove. The ram connector includes at least one shear connector correspondingly disposable in the block groove and the shaft groove whereby the ram shaft is releasably securable to the ram block.
申请公布号 EP2616633(B1) 申请公布日期 2015.07.29
申请号 EP20110758354 申请日期 2011.09.13
申请人 NATIONAL OILWELL VARCO, L.P. 发明人 WEIR, JAMES, WILLIAM;ENSLEY, ERIC, TREVOR
分类号 E21B33/064 主分类号 E21B33/064
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