| 摘要 |
<p>The present invention regards a riser system comprising at least one riser extending from a subsea wellhead to a surface vessel, tension means for keeping the at least one riser tensioned, which tension means are connected to the vessel, a upper workover riser package (UWRP) located at the upper section of the riser and arranged to seal off the riser passage. According to the invention the UWRP is located below the connection point of the tension means to the vessel, giving the UWRP a position stationary relative a seabed, and that the UWRP comprises an interface adapted for the connection of different kinds of workover equipment. The invention also regards a method for inserting tools into a riser.</p> |
