| 摘要 |
<p>RISER CONNECTOR A riser connector for connecting two riser members, The first riser member has a profile shoulder and the second riser member has an expandable ring for engaging the shoulder of the first riser member thereby making a connection. The second riser member has a locking sleeve movable to a position wherein the locking sleeve holds the expandable ring in engagement. The locking sleeve is automatically activated by the relative movement of the riser members. When the locking sleeve is in its second position, an actuator sleeve in the bore of the locking sleeve automatically moves to a position wherein the locking sleeve is locked in its second position. The riser connector is disconnected by a tool attached to the end of a pipe string which is inserted in the bore of the riser members. The tool engages the actuator sleeve and shifts it to a position wherein the locking sleeve is unlocked. The tool then engages the locking sleeve and shifts it to its first position wherein the expandable ring is no longer held in engagement with the riser member.</p> |
