发明名称 LARGE DIAMETER TUBULAR LIFTING APPARATUSES AND METHODS
摘要 A lifting elevator includes a first elevator segment having a first plurality of slips, a second elevator segment having a second plurality of slips, and a hinge. The first elevator segment and the second elevator segment each have a swept angle of about 180°, and each of the first plurality of slips and the second plurality of slips includes a die configured to grip an external surface of a pipe.
申请公布号 WO2017034625(A1) 申请公布日期 2017.03.02
申请号 WO2016US28883 申请日期 2016.04.22
申请人 FRANK'S INTERNATIONAL, LLC 发明人 ANGELLE, Jeremy, Richard;SMITH, Logan, Essex
分类号 E21B19/02;E21B15/00;E21B19/06 主分类号 E21B19/02
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