BLOWOUT PREVENTER BLADE ASSEMBLY AND METHOD OF USING SAME
摘要
Techniques for shearing a tubular of a wellbore penetrating a subterranean formation with a blowout preventer are provided. The blowout preventer has a housing with a hole therethrough for receiving the tubular. The techniques relate to a blade assembly including a ram block movable between a non - engagement position and an engagement position about the tubular, a blade carried by the ram block for cuttingly engaging the tubular, and a retractable guide carried by the ram block and slidably movable therealong. The retractable guide has a guide surface for urging the tubular into a desired location in the blowout preventer as the ram block moves to the engagement position.
申请公布号
CA2812646(A1)
申请公布日期
2012.04.05
申请号
CA20112812646
申请日期
2011.09.29
申请人
NATIONAL OILWELL VARCO, L.P.
发明人
SPRINGETT, FRANK BENJAMIN;JOHNSON, CHRISTOPHER DALE;PETERS, SHERN EUGENE;ENSLEY, ERIC TREVOR