| 摘要 |
The present invention is directed a rotating flow control diverter having a riser adapter. The riser adapter allows the rotating flow control diverter to be positioned in a riser string below the drilling platform. The rotating flow control diverter has two flanged connections that connect to the flanged connections of riser pipe such that the rotating flow control diverter becomes an integral part of the riser string. The rotating flow control device has means to circulate lubricating fluid in the bearing assembly without the need for external feed lines. |
