| 摘要 |
A subsea wellhead with suitable orienting means 26 including a conductor pipe 16 having an internal mule shoe 22 ending in a slot 24, a downhole well member 28, a collar 30 secured around said member, a key ring 34 having an external key 40 and being rotatable about the collar 30 and means 38 for securing the key ring to said collar in a preselected oriented position whereby engagement of the key on the mule shoe helical shoulder and in the slot provides the preselected orientation of the downhole member. <IMAGE> |
