| 摘要 |
<p>A triple activity drilling ship may be provided with two separate drilling centers (12, 14), each including drilling apparatus. In addition, a trolley (16) that is capable of supporting tubulars may be positioned between a first position (12) within one of said drilling centers and a second position (14) outside that drilling center. As a result, the trolley may be used to hold assembled tubulars while other activities are ongoing in one or more of the drilling centers.</p> |
