摘要 |
An automated pipe slips includes a pipe slips body having a generally frustoconically tapered inner wall. A plurality of wedges is positioned to slide along the tapered inner wall and may be hydraulically driven. In some embodiments, the wedges alternate between long and short wedges, such that only long wedges are used to engage a tubular member having a small diameter, and both long and short wedges are used to engage a tubular member having a large diameter. In some embodiments, the automated pipe slips may include a centralizer assembly. In some embodiments, the automated pipe slips may include a wiper assembly. |
申请人 |
NABORS CORPORATE SERVICES |
发明人 |
GUPTA, ASHISH;SCEKIC, VLADIMIR;REDDY, PADIRA;ELLIS, BRIAN;YOUSEF, FAISAL;MAGNUSON, CHRIS;HEIGHINGTON, LARRY |