发明名称 Apparatus and methods for wedge lock prevention
摘要 In one embodiment, a tubular handling apparatus is provided with a wedge lock release mechanism that creates a clearance to allow movement by the mandrel having mating wedge surfaces relative to the tubular to release the wedge slips. In another embodiment, a tubular handling apparatus for handling a tubular includes a mandrel; a carrier coupled to the mandrel; a gripping element for engaging the tubular; an engagement member coupled to the carrier for engaging an upper portion of the tubular; and an abutment device adapted to engage the engagement member, wherein a length of the abutment device is adjustable to allow movement of the engagement member.
申请公布号 US8776898(B2) 申请公布日期 2014.07.15
申请号 US201313910862 申请日期 2013.06.05
申请人 Weatherford/Lamb, Inc. 发明人 Liess Martin;Pietras Bernd-Georg
分类号 E21B23/00;E21B19/22 主分类号 E21B23/00
代理机构 Patterson & Sheridan, LLP 代理人 Patterson & Sheridan, LLP
主权项 1. A release apparatus for releasing a gripping element of a tubular handling apparatus, comprising: an anchor attached to the tubular handling apparatus; an engagement member for engaging a top end surface of a tubular; and an abutment device disposed between the anchor and the engagement member, wherein a distance between the anchor and the engagement member is adjustable to create an axial gap between the engagement member and the tubular, and wherein adjusting the distance is independent from movement of the gripping element.
地址 Houston TX US