| 摘要 |
<p>A drill floor device (1) comprising two or more mouseholes (7, 8, 9) for assembly and disassembly of pipe string sections. The mouseholes (7, 8, 9) are arranged to be displaced underneath the drill floor (1) by a drive system (6) and positioned under a hole (4) or an opening in the drill floor (1). At least one of the mouseholes (7, 8, 9) is provided with an elevator (10, 11) arranged to raise and lower a pipe or a pipe string section located in the mousehole, between an upper working position in which the upper end of the pipe/pipe string section projects above the drill floor (1) and a lower position of rest in which the upper end of the pipe/pipe string section is below the drill floor (1).</p> |
