发明名称 A DRILLING SYSTEM AND A DEVICE FOR ASSEMBLING AND DISASSEMBLING PIPE STANDS
摘要 <p>A system for storing one or more tubulars comprises a drilling deck including a hole offset from a wellbore centerline. In addition, the system comprises a rack unit coupled to the drilling deck and extending downward from the hole in the drilling deck. The rack unit comprises a tubular housing having a longitudinal axis, an upper end, and a lower end opposite the upper end. The rack unit also comprises a first rack disposed within the body, wherein the first rack is moveably coupled to the body.</p>
申请公布号 EP2635766(B1) 申请公布日期 2015.04.01
申请号 EP20110787961 申请日期 2011.11.02
申请人 NATIONAL OILWELL VARCO NORWAY AS 发明人 SELZER, PER ANDRE;JOHANSSON, MAGNUS;HAAVIND, ERIK;WEBB, JONATHAN GARRICK;MOEN, TROND WERNER;ABRAHAMSEN, BJORN
分类号 E21B17/01;E21B19/06;E21B19/14;E21B19/16 主分类号 E21B17/01
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